Homebrew PCBs

There have been discussions from time to time on this reflector about 
techniques for cutting PCB material. I don't recall having seen mention 
of a band saw.

Anyone use a band saw to cut FR4 as thick as 1/16 inch? Does it work 
well? Or poorly? What kind of blade does it take? Other comments or advice?

I have occasionally considered buying a band saw for other applications 
and was just wondering if its use in cutting FR4 might lend some weight 
to that decision? Thinking about a table model.

Thanks.

Steve

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

On Tue, 13 Apr 2010 22:14:22 -0400, you wrote:

>There have been discussions from time to time on this reflector about 
>techniques for cutting PCB material. I don't recall having seen mention 
>of a band saw.
>
>Anyone use a band saw to cut FR4 as thick as 1/16 inch? Does it work 
>well? Or poorly? What kind of blade does it take? Other comments or advice?
>
>I have occasionally considered buying a band saw for other applications 
>and was just wondering if its use in cutting FR4 might lend some weight 
>to that decision? Thinking about a table model.

It can work well, but the following things can happen:

1) glass PCB can eat your blade
2) cutting a straight line can be iffy

I use a shear.  For odd shapes, like notches, I use a carbide rasp on
a mill.

Harvey

>
>Thanks.
>
>Steve

Steve,

I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot current price $52.00.  The last time I used it I didn't even bother using water, but I did use a respirator to avoid the dust. It cuts through FR-4 like a hot knife through butter.

The supplied blade is a bit thick, but you can get a slicing blade for $8.00 (0.008") here,

http://www.lopacki.com/sawblades/#f

I am very satisfied with the product. You can also cut tile with it  ...

Baxter


--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> There have been discussions from time to time on this reflector about 
> techniques for cutting PCB material. I don't recall having seen mention 
> of a band saw.
>

On 04/13/2010 09:11 PM, bebx2000 wrote:

> I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home
> Depot current price $52.00.

> The supplied blade is a bit thick, but you can get a slicing blade
> for $8.00 (0.008") here,
>
> http://www.lopacki.com/sawblades/#f


This is a really good info.

Right now I am using an utility knife to score both sides and snap it:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866

But it requires a lot of effort and the cut is not very clean. If the 
board has to be cut on all the sides it's a nightmare.

I wanted to get one of these, glass cutter:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=96032

If it is enough to pass it a couple of times to score the copper layer, 
it could be a good and cheap solution. Anybody has experience with a 
tool like that?

Otherwise the wet saw is a great idea. On top of that... yes, I need to 
cut tiles from time to time :) for my oven (I use saltillo tiles to cook 
pizza)

bye!
as

I've used bandsaw, scroll saw, tin snips, a razor, and even a reground 
table saw blade (for v-scoring).  The scroll saw does the best job 
quality-wise, but they all eat through blades like there's no tomorrow. 
  One of these days, I'm going to get some carbide or diamond scroll saw 
blades and see how those work.  The only advantage the bandsaw has is 
that the blade is so long the wear is spread more thinly.

Yeah, I should get a shear, but that only works if you want straight 
lines...

--- In Homebrew_PCBs@yahoogroups.com, Alessio Sangalli <alesan@...>
wrote:
>
> On 04/13/2010 09:11 PM, bebx2000 wrote:
>
> > I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home
> > Depot current price $52.00.
> This is a really good info.
>
> Right now I am using an utility knife to score both sides and snap it:
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866
>
> But it requires a lot of effort and the cut is not very clean. If the
> board has to be cut on all the sides it's a nightmare.
>

Thats the method I use. Works very well but you need to use a metal
ruler (I use a thick metal square, something like this
<http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9541>
) and you need to match your cuts on both sides exactly. If they don't
match perfect, thats when you get uneven edges.
Put the portion of the board to keep under the ruler while holding it
down and snap the excess upwards. I get very clean cuts that way. Oh,
also get yourself a rubber cutting mat (like this one
<http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.\
jpg>  ) at an art supply shop. It'll save your furniture/kitchen
counters. :)

Marc



[Non-text portions of this message have been removed]

On 04/13/2010 10:27 PM, daemons_ca wrote:

>> Right now I am using an utility knife to score both sides and snap it:
>> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866
>>
>> But it requires a lot of effort and the cut is not very clean. If the
>> board has to be cut on all the sides it's a nightmare.
>>
>
> Thats the method I use. Works very well but you need to use a metal
> ruler (I use a thick metal square, something like this
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9541>

I have that same ruler, and a clamp , etc. No, when the boards are thick 
and double copper and double-face it's a nightmare. I've done many 
boards and the result is always: cut hands, a lot of effort and time wasted.



> also get yourself a rubber cutting mat (like this one
> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.\
> jpg>   ) at an art supply shop. It'll save your furniture/kitchen


This is interesting. Unfortunately the link gives an HTTP 404


bye
as

Alessio Sangalli wrote:
>  
>
> On 04/13/2010 09:11 PM, bebx2000 wrote:
>
> > I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home
> > Depot current price $52.00.
>
> > The supplied blade is a bit thick, but you can get a slicing blade
> > for $8.00 (0.008") here,
> >
> > http://www.lopacki.com/sawblades/#f 
> <http://www.lopacki.com/sawblades/#f>
>
> This is a really good info.
>
> Right now I am using an utility knife to score both sides and snap it:
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866 
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866>
>
> But it requires a lot of effort and the cut is not very clean. If the
> board has to be cut on all the sides it's a nightmare.
>
> I wanted to get one of these, glass cutter:
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=96032 
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=96032>
>
> If it is enough to pass it a couple of times to score the copper layer,
> it could be a good and cheap solution. Anybody has experience with a
> tool like that?
>
I use a carbide tipped laminate scoring cutter, which works *really* 
well.  Its far sturdier than a glass cutter. I suspect the glass cutter 
will be ok, but those little wheels have a tendency to come off after a 
while.

Eddie

On 14/04/2010, at 4:07 PM, Alessio Sangalli wrote:

> > also get yourself a rubber cutting mat (like this one
> > <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.\
> > jpg> ) at an art supply shop. It'll save your furniture/kitchen
> 
> This is interesting. Unfortunately the link gives an HTTP 404

Line break in the URL, try this:

http://3.ly/EOe6

Band saws were designed specifically from scrolling, curved, complex 
work, not straight-edge cuts. And, it costs a bit to replace a band saw 
blade. I don't remember if we ever had a band saw
blade resharpened.. I recall we used to replace the  blade with a new 
one when it got dull,
and we never cut epoxy glass material, it was always sheared.
Epoxy-glass base is nasty on virtually all types of blades and is best 
when cut on a shear.
FR4 is easier to work with, but I don't recall ever having it cut on a 
band saw.

Roland F. Harriston, P.D.
************************

bebx2000 wrote:
>  
>
>
>
> Steve,
>
> I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home 
> Depot current price $52.00. The last time I used it I didn't even 
> bother using water, but I did use a respirator to avoid the dust. It 
> cuts through FR-4 like a hot knife through butter.
>
> The supplied blade is a bit thick, but you can get a slicing blade for 
> $8.00 (0.008") here,
>
> http://www.lopacki.com/sawblades/#f <http://www.lopacki.com/sawblades/#f>
>
> I am very satisfied with the product. You can also cut tile with it ...
>
> Baxter
>
> --- In Homebrew_PCBs@yahoogroups.com 
> <mailto:Homebrew_PCBs%40yahoogroups.com>, Steve <steve65@...> wrote:
> >
> > There have been discussions from time to time on this reflector about
> > techniques for cutting PCB material. I don't recall having seen mention
> > of a band saw.
> >
>
> 



[Non-text portions of this message have been removed]

Alessio Sangalli wrote:
> On 04/13/2010 10:27 PM, daemons_ca wrote:
> 
>>> Right now I am using an utility knife to score both sides and snap it:
>>> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866
>>>
>>> But it requires a lot of effort and the cut is not very clean. If the
>>> board has to be cut on all the sides it's a nightmare.
>>>
>> Thats the method I use. Works very well but you need to use a metal
>> ruler (I use a thick metal square, something like this
>> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9541>
> 
> I have that same ruler, and a clamp , etc. No, when the boards are thick 
> and double copper and double-face it's a nightmare. I've done many 
> boards and the result is always: cut hands, a lot of effort and time wasted.
> 
> 
> 
>> also get yourself a rubber cutting mat (like this one
>> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.\
>> jpg>   ) at an art supply shop. It'll save your furniture/kitchen
> 
> 
> This is interesting. Unfortunately the link gives an HTTP 404

This works.

<http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.jpg>


Wayne

Now that I am retired and no longer have access fine facilities, I use a 
carbide-tipped hand
tool (scribe) that I believe I purchased from Edmund Scientific or some 
place like that. I score the
PC material and snap it clean over the straight edge of my work bench. I 
think carbide tipped
scribes or scoring tools are readily available, and they last a long 
time, even when scoring
epoxy glass.

Roland F. Harriston, P.D.



Wayne wrote:
>  
>
> Alessio Sangalli wrote:
> > On 04/13/2010 10:27 PM, daemons_ca wrote:
> >
> >>> Right now I am using an utility knife to score both sides and snap it:
> >>> 
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866 
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=34866>
> >>>
> >>> But it requires a lot of effort and the cut is not very clean. If the
> >>> board has to be cut on all the sides it's a nightmare.
> >>>
> >> Thats the method I use. Works very well but you need to use a metal
> >> ruler (I use a thick metal square, something like this
> >> 
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9541 
> <http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9541>>
> >
> > I have that same ruler, and a clamp , etc. No, when the boards are 
> thick
> > and double copper and double-face it's a nightmare. I've done many
> > boards and the result is always: cut hands, a lot of effort and time 
> wasted.
> >
> >
> >
> >> also get yourself a rubber cutting mat (like this one
> >> 
> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.\
> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.>>> 
> jpg> ) at an art supply shop. It'll save your furniture/kitchen
> >
> >
> > This is interesting. Unfortunately the link gives an HTTP 404
>
> This works.
>
> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.jpg 
> <http://www.modelkit-builder.com/wp-content/uploads/2009/01/cutting-mat.jpg>>
>
> Wayne
>
> 



[Non-text portions of this message have been removed]

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>
> There have been discussions from time to time on this reflector about 
> techniques for cutting PCB material. I don't recall having seen mention 
> of a band saw.
> 
> Anyone use a band saw to cut FR4 as thick as 1/16 inch? Does it work 
> well? Or poorly? What kind of blade does it take? Other comments or advice?
> 
> I have occasionally considered buying a band saw for other applications 
> and was just wondering if its use in cutting FR4 might lend some weight 
> to that decision? Thinking about a table model.
> 
> Thanks.
> 
> Steve
> 
> -- 
> Read The Patriot Post    Vertitas vos Liberabit
> http://patriotpost.us/subscription/
>
You really need a diamond blade as FR4 is glass.
A glass cutting band saw like the Taurus 3 should work for irregular shapes too.  Try Glasscrafters or Delphi.  They are about $375 but cut glass like butter; should do the job on FR4 too.  They run wet so dust shouldn't be much of a problem.

My experience is different from others have responded -- I cut the board with a band saw, and have not had any problem with blade life. Cuts very fast and no problem keeping it as straight as I need it to be. Leaves a tiny burr that cleans up easily with a file.

Two caveats: 1) I don't cut a lot of board, so perhaps I just haven't seen the deterioration of blades yet. BUT 2) I am using a metal cutting band saw, which uses a considerably slower blade speed than a wood cutting band saw, and I use a 24 tpi blade made for cutting metal. I suspect the high speed of a woodworking band saw is a major factor in destroying blades when cutting this material.

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> There have been discussions from time to time on this reflector about 
> techniques for cutting PCB material. I don't recall having seen mention 
> of a band saw.
> 
> Anyone use a band saw to cut FR4 as thick as 1/16 inch? Does it work 
> well? Or poorly? What kind of blade does it take? Other comments or advice?
> 
> I have occasionally considered buying a band saw for other applications 
> and was just wondering if its use in cutting FR4 might lend some weight 
> to that decision? Thinking about a table model.
> 
> Thanks.
> 
> Steve
> 
> -- 
> Read The Patriot Post    Vertitas vos Liberabit
> http://patriotpost.us/subscription/
>

On Wed, 14 Apr 2010 17:23:32 -0000, you wrote:

>My experience is different from others have responded -- I cut the board with a band saw, and have not had any problem with blade life. Cuts very fast and no problem keeping it as straight as I need it to be. Leaves a tiny burr that cleans up easily with a file.
>
>Two caveats: 1) I don't cut a lot of board, so perhaps I just haven't seen the deterioration of blades yet. BUT 2) I am using a metal cutting band saw, which uses a considerably slower blade speed than a wood cutting band saw, and I use a 24 tpi blade made for cutting metal. I suspect the high speed of a woodworking band saw is a major factor in destroying blades when cutting this material.
>
>--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>>
Same here. I use a blade designed for cutting metal. A 1/8" 10-tooth wood blade
isn't the way to go.

As far as keeping the cuts straight use the widest blade your
saw will take and adjust the blade tension and guides correctly.
If the saw is correctly adjusted it's not at all hard to cut a straight
line. If the guides are loose, etc. it's REALLY difficult.

Keith Bowers WB4LSJ- Thomasville, NC

For a nice straight cut I would think a high speed router would work very
well.  For that matter, you could use a router to make crazy cuts too.  I'd
go for a table router and a nice guide.

-Greg

On Wed, Apr 14, 2010 at 12:41 PM, <kabowers@...> wrote:

>
>
> On Wed, 14 Apr 2010 17:23:32 -0000, you wrote:
>
> >My experience is different from others have responded -- I cut the board
> with a band saw, and have not had any problem with blade life. Cuts very
> fast and no problem keeping it as straight as I need it to be. Leaves a tiny
> burr that cleans up easily with a file.
> >
> >Two caveats: 1) I don't cut a lot of board, so perhaps I just haven't seen
> the deterioration of blades yet. BUT 2) I am using a metal cutting band saw,
> which uses a considerably slower blade speed than a wood cutting band saw,
> and I use a 24 tpi blade made for cutting metal. I suspect the high speed of
> a woodworking band saw is a major factor in destroying blades when cutting
> this material.
> >
> >--- In Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>,
> Steve <steve65@...> wrote:
> >>
> Same here. I use a blade designed for cutting metal. A 1/8" 10-tooth wood
> blade
> isn't the way to go.
>
> As far as keeping the cuts straight use the widest blade your
> saw will take and adjust the blade tension and guides correctly.
> If the saw is correctly adjusted it's not at all hard to cut a straight
> line. If the guides are loose, etc. it's REALLY difficult.
>
> Keith Bowers WB4LSJ- Thomasville, NC
>
>  
>


[Non-text portions of this message have been removed]

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>
> There have been discussions from time to time on this reflector about 
> techniques for cutting PCB material. I don't recall having seen mention 
> of a band saw.
> 
> Anyone use a band saw to cut FR4 as thick as 1/16 inch? Does it work 
> well? Or poorly? What kind of blade does it take? Other comments or advice?
> 
> I have occasionally considered buying a band saw for other applications 
> and was just wondering if its use in cutting FR4 might lend some weight 
> to that decision? Thinking about a table model.
> 
> Thanks.
> 
> Steve
> 


I've been using a hacksaw with some scraps of wood clamped in a bench vise as a guide, works ok so far. 

I've cut it on a bandsaw before, but it's awfully hard on the blade.

On 04/14/2010 12:26 AM, Eddie Stassen wrote:

> I use a carbide tipped laminate scoring cutter, which works *really*
> well.  Its far sturdier than a glass cutter. I suspect the glass cutter
> will be ok, but those little wheels have a tendency to come off after a
> while.

Ok, but where did you get yours? How much does it cost? Do you have a 
picture or a link?

bye
as

On 04/14/2010 08:06 AM, Roland F. Harriston wrote:
> Now that I am retired and no longer have access fine facilities, I use a
> carbide-tipped hand
> tool (scribe) that I believe I purchased from Edmund Scientific or some
> place like that. I score the

interesting, but I could not find it on the Edmund Scientific site. Do 
you have a picture or a link where it is depicted?


bye
as

I'll butt in and mention that you can get several varieties of carbine 
scribes at (of all places)
Amazon.Com. Some are very inexpensive, a few bucks, some are a bit 
pricier. The one I purchased from Edmund Scientific about ten years ago 
cost about 2 bucks. At that time, I was doing very small quantities of 
G-10 epoxy glass almost exclusively. The thing still works.

Roland F. Harriston, The Pedantic Douche (PD)


Alessio Sangalli wrote:

>
> On 04/14/2010 12:26 AM, Eddie Stassen wrote:
>
> > I use a carbide tipped laminate scoring cutter, which works *really*
> > well. Its far sturdier than a glass cutter. I suspect the glass cutter
> > will be ok, but those little wheels have a tendency to come off after a
> > while.
>
> Ok, but where did you get yours? How much does it cost? Do you have a
> picture or a link?
>
> bye
> as
>
>

I've used a scroll saw with wood blades, but boy was it hard on blades and hard to hold straight line.  I finally got a paper cutter and it works pretty good up to about .050", but 1/16" is harder, but does work. For .032" to .045" and cutting straight lines, hard to imagine anything better.

Not sure if I had got the larger size would have been any better for the 1/16" or not.

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=9805

That is the one I got - I think I paid $12 or so - must have been on sale?  The larger one is now $25.

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874

Sorta wish I had got it.

Ken

Try Harbor Freight,

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=97336

Baxter

> Ok, but where did you get yours? How much does it cost? Do you have a 
> picture or a link?
> 
> bye
> as
>

Hi guys,

 

Since we're talking about cutting FR4, I thought I would share my creation
with you.  I made a small "PCB table saw."  

 

View from the top: http://twitpic.com/19ewab 

View from the bottom: http://twitpic.com/19ewi4 

 

It's essentially a Dremel flex shaft attachment affixed to a plate of
aluminum.  I originally wanted to use standard cut-off wheels because of
their availability, but the flex shaft handle was too large, or the diameter
of the wheel was too small. depending on how you look at it.  I removed half
of the handle and created a bearing block to hold the axis of rotation as
close to the table as possible.

 

It works fairly well and the adjustable gate allows you to make rather
straight cuts.  The cutoff wheels, while cheap, are fairly thick and
non-planar, though.  I'm looking into using much thinner steel saw blades in
the future.

 

I have DWG/DXF files of most all of the parts and I wouldn't be averse to
sharing them.

 

Best regards,

 

 

 

 

Paul 

 



[Non-text portions of this message have been removed]

P.S:

An outstanding job!
Overkill for just cutting PCB stock IMHO, but nevertheless,
good design and craftsmanship.

Roland F. Harriston, P.D.
************************

Paul Symansky wrote:
>  
>
> Hi guys,
>
> Since we're talking about cutting FR4, I thought I would share my creation
> with you. I made a small "PCB table saw."
>
> View from the top: http://twitpic.com/19ewab <http://twitpic.com/19ewab>
>
> View from the bottom: http://twitpic.com/19ewi4 
> <http://twitpic.com/19ewi4>
>
> It's essentially a Dremel flex shaft attachment affixed to a plate of
> aluminum. I originally wanted to use standard cut-off wheels because of
> their availability, but the flex shaft handle was too large, or the 
> diameter
> of the wheel was too small. depending on how you look at it. I removed 
> half
> of the handle and created a bearing block to hold the axis of rotation as
> close to the table as possible.
>
> It works fairly well and the adjustable gate allows you to make rather
> straight cuts. The cutoff wheels, while cheap, are fairly thick and
> non-planar, though. I'm looking into using much thinner steel saw 
> blades in
> the future.
>
> I have DWG/DXF files of most all of the parts and I wouldn't be averse to
> sharing them.
>
> Best regards,
>
> Paul
>



[Non-text portions of this message have been removed]

--- In Homebrew_PCBs@yahoogroups.com, "Paul Symansky" <symansky@...> wrote:
>
> Hi guys,
> 
>  
> 
> Since we're talking about cutting FR4, I thought I would share my creation
> with you.  I made a small "PCB table saw."  
> 
>  
> 
> View from the top: http://twitpic.com/19ewab 
> 
> View from the bottom: http://twitpic.com/19ewi4 
> 
>  
>


That's pretty nifty. Another approach that might work is to use a shaft and some ball bearings with a gear or belt drive to a motor mounted under the table, pretty much like a fullsized table saw. An advantage of that is the motor would not have to be a particularly high speed type, although I'm not sure how well the belt or gears would hold up and it would take more fabrication.

I've had such good luck with the drill I built that I might try something like this at some point, the hacksaw works but is not ideal.

On 04/14/2010 06:07 PM, Roland F. Harriston wrote:
> I'll butt in and mention that you can get several varieties of carbine
> scribes at (of all places)

Something like:
http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=97336

???

bye
as

It might do a fine job of cutting, and if you use carbide bits you would probably get decent life. But I hate to think about all the dust!!!

--- In Homebrew_PCBs@yahoogroups.com, Greg Kutzbach <greg.kutzbach@...> wrote:

>
> For a nice straight cut I would think a high speed router would work very
> well.  For that matter, you could use a router to make crazy cuts too.  I'd
> go for a table router and a nice guide.
> 
> -Greg
> 
> On Wed, Apr 14, 2010 at 12:41 PM, <kabowers@...> wrote:
> 
> >
> >
> > On Wed, 14 Apr 2010 17:23:32 -0000, you wrote:
> >
> > >My experience is different from others have responded -- I cut the board
> > with a band saw, and have not had any problem with blade life. Cuts very
> > fast and no problem keeping it as straight as I need it to be. Leaves a tiny
> > burr that cleans up easily with a file.
> > >
> > >Two caveats: 1) I don't cut a lot of board, so perhaps I just haven't seen
> > the deterioration of blades yet. BUT 2) I am using a metal cutting band saw,
> > which uses a considerably slower blade speed than a wood cutting band saw,
> > and I use a 24 tpi blade made for cutting metal. I suspect the high speed of
> > a woodworking band saw is a major factor in destroying blades when cutting
> > this material.
> > >
> > >--- In Homebrew_PCBs@yahoogroups.com <Homebrew_PCBs%40yahoogroups.com>,
> > Steve <steve65@> wrote:
> > >>
> > Same here. I use a blade designed for cutting metal. A 1/8" 10-tooth wood
> > blade
> > isn't the way to go.
> >
> > As far as keeping the cuts straight use the widest blade your
> > saw will take and adjust the blade tension and guides correctly.
> > If the saw is correctly adjusted it's not at all hard to cut a straight
> > line. If the guides are loose, etc. it's REALLY difficult.
> >
> > Keith Bowers WB4LSJ- Thomasville, NC
> >
> >  
> >
> 
> 
> [Non-text portions of this message have been removed]
>

--- In Homebrew_PCBs@yahoogroups.com, "awakephd" <a_wake@...> wrote:
>
> It might do a fine job of cutting, and if you use carbide bits you would probably get decent life. But I hate to think about all the dust!!!
> 


You would probably want water mist or flow to keep the dust down. Perhaps one of those cheap little desk fountain pumps with a dishpan under the cutting surface? The router might fling water everywhere, I dunno.

Wow . . . I didn't anticipate so much discussion. Thanks everyone for 
sharing your wisdom.

At least for the moment I am going to forgo the band saw idea and look 
at the wet saw described below by Baxter.

Also going to archive this thread of messages, there's a lot to learn 
from them :-)

Steve

On 4/14/2010 12:11 AM, bebx2000 wrote:
>
> Steve,
>
> I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot current price $52.00.  The last time I used it I didn't even bother using water, but I did use a respirator to avoid the dust. It cuts through FR-4 like a hot knife through butter.
>
> The supplied blade is a bit thick, but you can get a slicing blade for $8.00 (0.008") here,
>
> http://www.lopacki.com/sawblades/#f
>
> I am very satisfied with the product. You can also cut tile with it  ...
>
> Baxter
>
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@...>  wrote:
>    
>> There have been discussions from time to time on this reflector about
>> techniques for cutting PCB material. I don't recall having seen mention
>> of a band saw.
>>
>>      
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>    

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

I use a Hegner Variable speed scroll saw with a 4/0 blade usually used  
for jewellery saws.Works fine. Colin Lane
Colin Lane
Australia   




[Non-text portions of this message have been removed]

Hi Steve,
Depending on how much room you have in your workshop, have a look at at the cheap chinese bandsaws (~US$200). They are a horizontal saw to cut pipes etc, and a vertical (traditional) bandsaw. I have one and it is extremly useful for many jobs. I got a "BIMETAL" blade with it and it cuts FR4 very well - clean and accurately and it stays sharp forever.

A valuable tool!!!!!
Frank



--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> Wow . . . I didn't anticipate so much discussion. Thanks everyone for 
> sharing your wisdom.
> 
> At least for the moment I am going to forgo the band saw idea and look 
> at the wet saw described below by Baxter.
> 
> Also going to archive this thread of messages, there's a lot to learn 
> from them :-)
> 
> Steve
> 
> On 4/14/2010 12:11 AM, bebx2000 wrote:
> >
> > Steve,
> >
> > I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot current price $52.00.  The last time I used it I didn't even bother using water, but I did use a respirator to avoid the dust. It cuts through FR-4 like a hot knife through butter.
> >
> > The supplied blade is a bit thick, but you can get a slicing blade for $8.00 (0.008") here,
> >
> > http://www.lopacki.com/sawblades/#f
> >
> > I am very satisfied with the product. You can also cut tile with it  ...
> >
> > Baxter
> >
> >
> > --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>  wrote:
> >    
> >> There have been discussions from time to time on this reflector about
> >> techniques for cutting PCB material. I don't recall having seen mention
> >> of a band saw.
> >>
> >>      
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
> >    
> 
> -- 
> Read The Patriot Post    Vertitas vos Liberabit
> http://patriotpost.us/subscription/
>

Hi, I second that, and the BI-Metal blade is essential and it lasts and 
lasts....
Don....

----- Original Message ----- 
From: "frankwinter1" <frankwinter1@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, April 16, 2010 5:35 PM
Subject: [Homebrew_PCBs] Re: Cut FR4 with a band saw?


> Hi Steve,
> Depending on how much room you have in your workshop, have a look at at 
> the cheap chinese bandsaws (~US$200). They are a horizontal saw to cut 
> pipes etc, and a vertical (traditional) bandsaw. I have one and it is 
> extremly useful for many jobs. I got a "BIMETAL" blade with it and it cuts 
> FR4 very well - clean and accurately and it stays sharp forever.
>
> A valuable tool!!!!!
> Frank
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>>
>> Wow . . . I didn't anticipate so much discussion. Thanks everyone for
>> sharing your wisdom.
>>
>> At least for the moment I am going to forgo the band saw idea and look
>> at the wet saw described below by Baxter.
>>
>> Also going to archive this thread of messages, there's a lot to learn
>> from them :-)
>>
>> Steve
>>
>> On 4/14/2010 12:11 AM, bebx2000 wrote:
>> >
>> > Steve,
>> >
>> > I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot 
>> > current price $52.00.  The last time I used it I didn't even bother 
>> > using water, but I did use a respirator to avoid the dust. It cuts 
>> > through FR-4 like a hot knife through butter.
>> >
>> > The supplied blade is a bit thick, but you can get a slicing blade for 
>> > $8.00 (0.008") here,
>> >
>> > http://www.lopacki.com/sawblades/#f
>> >
>> > I am very satisfied with the product. You can also cut tile with it 
>> > ...
>> >
>> > Baxter
>> >
>> >
>> > --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>  wrote:
>> >
>> >> There have been discussions from time to time on this reflector about
>> >> techniques for cutting PCB material. I don't recall having seen 
>> >> mention
>> >> of a band saw.
>> >>
>> >>
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > Be sure to visit the group home and check for new Links, Files, and 
>> > Photos:
>> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>> >
>> >
>> >
>> >
>> >
>>
>> -- 
>> Read The Patriot Post    Vertitas vos Liberabit
>> http://patriotpost.us/subscription/
>>
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and 
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>


--------------------------------------------------------------------------------



No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.801 / Virus Database: 271.1.1/2813 - Release Date: 04/16/10 
04:31:00

Hi, I second that, But the BI-Metal blade is essential and it lasts and 
lasts along with cutting any thing else that comes along. One thing to do 
though is make sure the saw is setup well, there was an article a while back 
in "MODEL ENGINEERS WORKSHOP" magazine with all the clues.
Don.....VK3YV....

----- Original Message ----- 
From: "frankwinter1" <frankwinter1@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, April 16, 2010 5:35 PM
Subject: [Homebrew_PCBs] Re: Cut FR4 with a band saw?


> Hi Steve,
> Depending on how much room you have in your workshop, have a look at at 
> the cheap chinese bandsaws (~US$200). They are a horizontal saw to cut 
> pipes etc, and a vertical (traditional) bandsaw. I have one and it is 
> extremly useful for many jobs. I got a "BIMETAL" blade with it and it cuts 
> FR4 very well - clean and accurately and it stays sharp forever.
>
> A valuable tool!!!!!
> Frank
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>>
>> Wow . . . I didn't anticipate so much discussion. Thanks everyone for
>> sharing your wisdom.
>>
>> At least for the moment I am going to forgo the band saw idea and look
>> at the wet saw described below by Baxter.
>>
>> Also going to archive this thread of messages, there's a lot to learn
>> from them :-)
>>
>> Steve
>>
>> On 4/14/2010 12:11 AM, bebx2000 wrote:
>> >
>> > Steve,
>> >
>> > I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot 
>> > current price $52.00.  The last time I used it I didn't even bother 
>> > using water, but I did use a respirator to avoid the dust. It cuts 
>> > through FR-4 like a hot knife through butter.
>> >
>> > The supplied blade is a bit thick, but you can get a slicing blade for 
>> > $8.00 (0.008") here,
>> >
>> > http://www.lopacki.com/sawblades/#f
>> >
>> > I am very satisfied with the product. You can also cut tile with it 
>> > ...
>> >
>> > Baxter
>> >
>> >
>> > --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>  wrote:
>> >
>> >> There have been discussions from time to time on this reflector about
>> >> techniques for cutting PCB material. I don't recall having seen 
>> >> mention
>> >> of a band saw.
>> >>
>> >>
>> >
>> >
>> >
>> > ------------------------------------
>> >
>> > Be sure to visit the group home and check for new Links, Files, and 
>> > Photos:
>> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>> >
>> >
>> >
>> >
>> >
>>
>> -- 
>> Read The Patriot Post    Vertitas vos Liberabit
>> http://patriotpost.us/subscription/
>>
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and 
> Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>


--------------------------------------------------------------------------------



No virus found in this incoming message.
Checked by AVG - www.avg.com
Version: 9.0.801 / Virus Database: 271.1.1/2813 - Release Date: 04/16/10 
04:31:00

@Roland, thanks!

 

@James, I initially thought of doing something like that, but the complexity
of the project would have been greater by an order of magnitude.  Aligning
shafts and making provisions to tension belts is a huge hassle.  

 

Paul 

 



[Non-text portions of this message have been removed]

Hi Frank,

I took a look today at Home Depot for a saw such as you describe. Did 
not see one . . . although I might have walked by it and not recognized it.

Is there one on the Home Depot web site you could point me to? Or 
perhaps eBay?

Thanks.

Steve

On 4/16/2010 3:35 AM, frankwinter1 wrote:
> Hi Steve,
> Depending on how much room you have in your workshop, have a look at at the cheap chinese bandsaws (~US$200). They are a horizontal saw to cut pipes etc, and a vertical (traditional) bandsaw. I have one and it is extremly useful for many jobs. I got a "BIMETAL" blade with it and it cuts FR4 very well - clean and accurately and it stays sharp forever.
>
> A valuable tool!!!!!
> Frank
>
>
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@...>  wrote:
>    
>> Wow . . . I didn't anticipate so much discussion. Thanks everyone for
>> sharing your wisdom.
>>
>> At least for the moment I am going to forgo the band saw idea and look
>> at the wet saw described below by Baxter.
>>
>> Also going to archive this thread of messages, there's a lot to learn
>> from them :-)
>>
>> Steve
>>
>> On 4/14/2010 12:11 AM, bebx2000 wrote:
>>      
>>> Steve,
>>>
>>> I use a 4" diamond saw (QEP 60084A 4-Inch Portable Wet Saw). Home Depot current price $52.00.  The last time I used it I didn't even bother using water, but I did use a respirator to avoid the dust. It cuts through FR-4 like a hot knife through butter.
>>>
>>> The supplied blade is a bit thick, but you can get a slicing blade for $8.00 (0.008") here,
>>>
>>> http://www.lopacki.com/sawblades/#f
>>>
>>> I am very satisfied with the product. You can also cut tile with it  ...
>>>
>>> Baxter
>>>
>>>
>>> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>   wrote:
>>>
>>>        
>>>> There have been discussions from time to time on this reflector about
>>>> techniques for cutting PCB material. I don't recall having seen mention
>>>> of a band saw.
>>>>
>>>>
>>>>          
>>>
>>>
>>> ------------------------------------
>>>
>>> Be sure to visit the group home and check for new Links, Files, and Photos:
>>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>>
>>>
>>>
>>>
>>>
>>>        
>> -- 
>> Read The Patriot Post    Vertitas vos Liberabit
>> http://patriotpost.us/subscription/
>>
>>      
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>    

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

Here is a link to the home depot site with the saw:

http://tinyurl.com/y826qf5

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> Hi Frank,
> 
> I took a look today at Home Depot for a saw such as you describe. Did 
> not see one . . . although I might have walked by it and not recognized it.
> 
> Is there one on the Home Depot web site you could point me to? Or 
> perhaps eBay?

I did find that saw . . . or close to it. They had a 7-inch version, I 
decided to wait a bit to see if the 4-inch model shows up.

But the link I was look for was for the "cheap chinese bandsaws 
(~US$200)". Any of those on Home Depot?

Thanks.

Steve

On 4/17/2010 10:06 PM, sailingto wrote:
> Here is a link to the home depot site with the saw:
>
> http://tinyurl.com/y826qf5
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@...>  wrote:
>    
>> Hi Frank,
>>
>> I took a look today at Home Depot for a saw such as you describe. Did
>> not see one . . . although I might have walked by it and not recognized it.
>>
>> Is there one on the Home Depot web site you could point me to? Or
>> perhaps eBay?
>>      
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>    

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762

You can find similar saws through Grizzly and maybe also Northern Tool. I'm sure there are many other import companies that carry them as well.

When I bought mine a few years ago, I think I paid around $160 -- I guess the price has gone up a bit. OTOH, if you look through woodworking magazines, and/or Home Shop Machinist or similar, you can often find 20% off coupons for Harbor Freight. So maybe I got it with one of those coupons, and that's why I'm thinking $160 ...

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> I did find that saw . . . or close to it. They had a 7-inch version, I 
> decided to wait a bit to see if the 4-inch model shows up.
> 
> But the link I was look for was for the "cheap chinese bandsaws 
> (~US$200)". Any of those on Home Depot?
> 
> Thanks.
> 
> Steve
> 
> On 4/17/2010 10:06 PM, sailingto wrote:
> > Here is a link to the home depot site with the saw:
> >
> > http://tinyurl.com/y826qf5
> >
> > --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>  wrote:
> >    
> >> Hi Frank,
> >>
> >> I took a look today at Home Depot for a saw such as you describe. Did
> >> not see one . . . although I might have walked by it and not recognized it.
> >>
> >> Is there one on the Home Depot web site you could point me to? Or
> >> perhaps eBay?
> >>      
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
> >    
> 
> -- 
> Read The Patriot Post    Vertitas vos Liberabit
> http://patriotpost.us/subscription/
>

Thank you. There's a Harbor Freight nearby, I'll take a look.

Steve

On 4/18/2010 9:24 PM, awakephd wrote:
> Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:
>
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762
>
> You can find similar saws through Grizzly and maybe also Northern Tool. I'm sure there are many other import companies that carry them as well.
>
> When I bought mine a few years ago, I think I paid around $160 -- I guess the price has gone up a bit. OTOH, if you look through woodworking magazines, and/or Home Shop Machinist or similar, you can often find 20% off coupons for Harbor Freight. So maybe I got it with one of those coupons, and that's why I'm thinking $160 ...
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@...>  wrote:
>    
>> I did find that saw . . . or close to it. They had a 7-inch version, I
>> decided to wait a bit to see if the 4-inch model shows up.
>>
>> But the link I was look for was for the "cheap chinese bandsaws
>> (~US$200)". Any of those on Home Depot?
>>
>> Thanks.
>>
>> Steve
>>
>> On 4/17/2010 10:06 PM, sailingto wrote:
>>      
>>> Here is a link to the home depot site with the saw:
>>>
>>> http://tinyurl.com/y826qf5
>>>
>>> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@>   wrote:
>>>
>>>        
>>>> Hi Frank,
>>>>
>>>> I took a look today at Home Depot for a saw such as you describe. Did
>>>> not see one . . . although I might have walked by it and not recognized it.
>>>>
>>>> Is there one on the Home Depot web site you could point me to? Or
>>>> perhaps eBay?
>>>>
>>>>          
>>>
>>>
>>> ------------------------------------
>>>
>>> Be sure to visit the group home and check for new Links, Files, and Photos:
>>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>>
>>>
>>>
>>>
>>>
>>>        
>> -- 
>> Read The Patriot Post    Vertitas vos Liberabit
>> http://patriotpost.us/subscription/
>>
>>      
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>    

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

Those are nice bandsaws - but sure seem a bit of "overkill" for tiny little PCB - well, my boards anyway are always less than a 4"X6" size.  I use the HF paper cutter - cheap, and does a good job on anything up to .062".

This is the one I have: 

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874

it was on sale, but thinking about getting this larger one:

http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874

$20USD vs $25USD isn't much difference.  When I purchased my paper cutter at HF I think there was over $10 difference.

Ken H.

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:

>
> Thank you. There's a Harbor Freight nearby, I'll take a look.
> 
> Steve
> 
> On 4/18/2010 9:24 PM, awakephd wrote:
> > Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:
> >
> > http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762
> >

Does the paper cutter warp the piece of PCB that you cut off? Just 
wondering if both sections that result from a cut remain flat?

Steve

On 4/20/2010 8:35 PM, sailingto wrote:
> Those are nice bandsaws - but sure seem a bit of "overkill" for tiny little PCB - well, my boards anyway are always less than a 4"X6" size.  I use the HF paper cutter - cheap, and does a good job on anything up to .062".
>
> This is the one I have:
>
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
>
> it was on sale, but thinking about getting this larger one:
>
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
>
> $20USD vs $25USD isn't much difference.  When I purchased my paper cutter at HF I think there was over $10 difference.
>
> Ken H.
>
> --- In Homebrew_PCBs@yahoogroups.com, Steve<steve65@...>  wrote:
>    
>> Thank you. There's a Harbor Freight nearby, I'll take a look.
>>
>> Steve
>>
>> On 4/18/2010 9:24 PM, awakephd wrote:
>>      
>>> Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:
>>>
>>> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762
>>>
>>>        
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>    

-- 
Read The Patriot Post    Vertitas vos Liberabit
http://patriotpost.us/subscription/

--- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@...> wrote:
>
> Does the paper cutter warp the piece of PCB that you cut off? Just 
> wondering if both sections that result from a cut remain flat?
> 
> Steve



I've used the similar but much bigger heavier paper cutter at work to cut FR4 when the receptionist is not nearby. It works fine and does leave both pieces flat, fiberglass is very resilient, but it can't be doing any good for the blade, I have to really slam it down.

Good to know the HF cutters work ok, I wonder how well they'll hold up.

Well, if I cut a very narrow 1/8" sliver off, yea it curls a lot... even a 1/4" slice will curl some, but for normal cuts, both sides stay flat.

As to how long it will hold up?  I wouldn't think in a factory production where it makes hundreds of cuts/day it would last long, but for home use where 5 or 10 cuts/week are done, I expect it to last a good while.... years? The blade can always be sharpened if need be.  The $25 should hold up longer.  I think that is the one I would get now.

For the cost and ease of cutting - these are my choice, and if the PCB is the .032" to .040" it just "slices thru" really good.  Only the heavier .062" do I have to really hold tight when cutting.

Ken H>

Ken, you are entirely correct -- getting this saw just to cut a few PC boards would seem like major overkill. In my case, I already had the saw to support my home machine shop and welding activities. If you need to cut metal very often, this saw will be a very welcome change from a hacksaw!

--- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingtoo@...> wrote:

>
> Those are nice bandsaws - but sure seem a bit of "overkill" for tiny little PCB - well, my boards anyway are always less than a 4"X6" size.  I use the HF paper cutter - cheap, and does a good job on anything up to .062".
> 
> This is the one I have: 
> 
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
> 
> it was on sale, but thinking about getting this larger one:
> 
> http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
> 
> $20USD vs $25USD isn't much difference.  When I purchased my paper cutter at HF I think there was over $10 difference.
> 
> Ken H.
> 
> --- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@> wrote:
> >
> > Thank you. There's a Harbor Freight nearby, I'll take a look.
> > 
> > Steve
> > 
> > On 4/18/2010 9:24 PM, awakephd wrote:
> > > Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:
> > >
> > > http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762
> > >
>

Paul, I must commend you on a job well done. That is a NICE setup....  maybe "one of these days" when i get time I might try something like that.  Good work!

73 de Ken H.

The best type of saw I have used for cutting PCB's is a bench size or small table saw with a wet/dry diamond blade.  You'll need a good Vac system with a fine filter also put a filter over the air intake of the motor or the motor with be full of fine dust and not last long.

I also have one of the old Kepro shears, it works good but really can get better and more repeatable cut on the table saw.

If you are cutting FR4 with a standard steel blade it is not going to last very long.  You need either Carbide blade or the Diamond Blade.

Ben


--- In Homebrew_PCBs@yahoogroups.com, "awakephd" <a_wake@...> wrote:

>
> Ken, you are entirely correct -- getting this saw just to cut a few PC boards would seem like major overkill. In my case, I already had the saw to support my home machine shop and welding activities. If you need to cut metal very often, this saw will be a very welcome change from a hacksaw!
> 
> --- In Homebrew_PCBs@yahoogroups.com, "sailingto" <sailingtoo@> wrote:
> >
> > Those are nice bandsaws - but sure seem a bit of "overkill" for tiny little PCB - well, my boards anyway are always less than a 4"X6" size.  I use the HF paper cutter - cheap, and does a good job on anything up to .062".
> > 
> > This is the one I have: 
> > 
> > http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
> > 
> > it was on sale, but thinking about getting this larger one:
> > 
> > http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=90874
> > 
> > $20USD vs $25USD isn't much difference.  When I purchased my paper cutter at HF I think there was over $10 difference.
> > 
> > Ken H.
> > 
> > --- In Homebrew_PCBs@yahoogroups.com, Steve <steve65@> wrote:
> > >
> > > Thank you. There's a Harbor Freight nearby, I'll take a look.
> > > 
> > > Steve
> > > 
> > > On 4/18/2010 9:24 PM, awakephd wrote:
> > > > Steve, Home Depot does not carry these, to the best of my knowledge, nor does Lowe's. Instead you need a Harbor Freight or similar store:
> > > >
> > > > http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=93762
> > > >
> >
>