Homebrew_PCBs

This new Kickstarter project might be of interest:

http://www.kickstarter.com/projects/otherfab/the-othermill-custom-circuits-at-your-fingertips

Leon
--
Leon Heller
G1HSM

Thread about this on the EEVBlog forums...
http://www.eevblog.com/forum/crowd-funded-projects/othermill-cnc-mill-designed-with-diy-pcb-fabrication-in-mind/

On 20/05/13 19:34, Leon Heller wrote:
>
> This new Kickstarter project might be of interest:
>
> http://www.kickstarter.com/projects/otherfab/the-othermill-custom-circuits-at-your-fingertips
>
> Leon
> --
> Leon Heller
> G1HSM
>
> __._,_._



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

On Mon, May 20, 2013 at 4:38 AM, James <bitsyboffin@...> wrote:

>
>
> Thread about this on the EEVBlog forums...
>
> http://www.eevblog.com/forum/crowd-funded-projects/othermill-cnc-mill-designed-with-diy-pcb-fabrication-in-mind/
>

Hi there,

I'm a lurker on this list... but this thread caught my eye and I went to
see the comments on the eevblog forums.... couldnt believe the negative
tone of most.... it seems everyone feels qualified to say what is the
proper way to design one CNC... yet I dont see their own designs.... in
other words, talk is cheap.

The comment that made my day was one saying a CnC should be heavy enough to
require a pallet to move, and if not, then surely the unit isnt sturdy
enough..... sheesh!

And it also surprised me to see no mention of the ones from Zen TW
which are made of aluminum instead of plastic....

http://www.amazon.com/gp/product/B002ARTLUG/ref=as_li_ss_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B002ARTLUG&linkCode=as2&tag=showitem06-20

Just my $0.02
FC

--
During times of Universal Deceit, telling the truth becomes a revolutionary
act
- George Orwell


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

> This new Kickstarter project might be of interest:
>
> http://www.kickstarter.com/projects/otherfab/the-othermill-custom-
> circuits-at-your-fingertips
>
> Leon

$200,000 already?

$1,399 each?

You could CNC a Seig X2 mill for that price.

Plastic body would be ok for a small mill (rigidity is easier when things
are smaller), though plywood might be a better choice. They probably just
like the look.

Teflon-coated leadscrews? Hmm. Anyway, and why?

Interesting spindle, I was expecting a Dremel clone to be clamped in there.
I'd never heard of a Fairloc collet before, but I've seen that style in
pulley hubs. It seems they're using a shaft coupler as a collect, I guess
that'd work. Might even be a rather clever idea.

One thought was "why do these people keep inventing their own CAD-CAM
software?" when I read you're not stuck with it; it does have
"yet-another-open-source-motion-controller" that will take g-code.

Another was "Why do people keep putting the stepper motor at the front?"

I was wondered what the blob of solders were for on the demo PCB, and
realised there are probably SMD resistors underneath.

My favourite bit is the "it's got handles!", followed by a "we don't need
any stinkin' handles" photo. Heh.

Ah well, they might actually make it. Good luck to them.

Tony

> And it also surprised me to see no mention of the ones from Zen TW which
> are made of aluminum instead of plastic....
>
> http://www.amazon.com/gp/product/B002ARTLUG/ref=as_li_ss_tl?ie=UTF8
> &camp=1789&creative=390957&creativeASIN=B002ARTLUG&linkCode=as2
> &tag=showitem06-20

That's plastic (PVC) as well. :)

There's nothing wrong with the Kickstarter one bar it's a bit overpriced, as
your link shows. Sure the Zen Toolworks is missing $200 worth of bits, but
it's a far cry from $1,399 (and that' s their intro price!).

Tony

In article <00b501ce5534$a1a50550$e4ef0ff0$@...>,
Tony Smith <ajsmith1968@...> wrote:

> $200,000 already?

> $1,399 each?

> You could CNC a Seig X2 mill for that price.

Or just buy one of these

http://uk.farnell.com/milford-instruments/5d300/pcp-drill-bench-3-axis-machine/dp/4140369

Yeh I know it's MDF but..

--
Stuart Winsor

Midlands RISC OS and Raspberry pi show, 13th July 2013

http://www.mug.riscos.org/show13/MUGshow.html

--- In Homebrew_PCBs@yahoogroups.com, lists <Stuartlists@...> wrote:

>
> In article <00b501ce5534$a1a50550$e4ef0ff0$@...>,
> Tony Smith <ajsmith1968@...> wrote:
> > $200,000 already?
>
> > $1,399 each?
>
> > You could CNC a Seig X2 mill for that price.
>
> Or just buy one of these
>
> http://uk.farnell.com/milford-instruments/5d300/pcp-drill-bench-3-axis-machine/dp/4140369
>
> Yeh I know it's MDF but..

Nothing wrong with MDF or PVC if it is tough enough to do what you need. But that one uses ball bearing drawer slides. I think it is only meant for drilling holes in PCBs.

Although at only about $400, I would not expect too much.

This one is a bit more, but at just under $1k it includes 282 oz-in stepper motors, antibacklash ballscrews, and all aluminum construction. Cut area about 12x23x4. Height depends on spindle motor and bit, I think.
http://www.kelinginc.net/CNCmachines3030.html

Steve Greenfield AE7HD

On 21/05/2013 05:39, AlienRelics wrote:

>
> --- In Homebrew_PCBs@yahoogroups.com, lists <Stuartlists@...> wrote:
>> In article <00b501ce5534$a1a50550$e4ef0ff0$@...>,
>> Tony Smith <ajsmith1968@...> wrote:
>>> $200,000 already?
>>> $1,399 each?
>>> You could CNC a Seig X2 mill for that price.
>> Or just buy one of these
>>
>> http://uk.farnell.com/milford-instruments/5d300/pcp-drill-bench-3-axis-machine/dp/4140369
>>
>> Yeh I know it's MDF but..
> Nothing wrong with MDF or PVC if it is tough enough to do what you need. But that one uses ball bearing drawer slides. I think it is only meant for drilling holes in PCBs.
>
> Although at only about $400, I would not expect too much.
>
> This one is a bit more, but at just under $1k it includes 282 oz-in stepper motors, antibacklash ballscrews, and all aluminum construction. Cut area about 12x23x4. Height depends on spindle motor and bit, I think.
> http://www.kelinginc.net/CNCmachines3030.html
>
> Steve Greenfield AE7HD
>
>

Has any one tried any of the Chinese routers that appear on E-Bay e.g.

http://www.ebay.com/itm/CNC-Updated-3040-ROUTER-ENGRAVER-ENGRAVING-DRILLING-MILLING-MACHINE-11000prm-/221229509571?pt=LH_DefaultDomain_0&hash=item33824e6bc3

Dave
G4UGM

What about a shapeoko? I am loving mine.

Sent from my iPhone

On May 21, 2013, at 2:04 AM, Dave <dave.g4ugm@...> wrote:

> On 21/05/2013 05:39, AlienRelics wrote:
> >
> > --- In Homebrew_PCBs@yahoogroups.com, lists <Stuartlists@...> wrote:
> >> In article <00b501ce5534$a1a50550$e4ef0ff0$@...>,
> >> Tony Smith <ajsmith1968@...> wrote:
> >>> $200,000 already?
> >>> $1,399 each?
> >>> You could CNC a Seig X2 mill for that price.
> >> Or just buy one of these
> >>
> >> http://uk.farnell.com/milford-instruments/5d300/pcp-drill-bench-3-axis-machine/dp/4140369
> >>
> >> Yeh I know it's MDF but..
> > Nothing wrong with MDF or PVC if it is tough enough to do what you need. But that one uses ball bearing drawer slides. I think it is only meant for drilling holes in PCBs.
> >
> > Although at only about $400, I would not expect too much.
> >
> > This one is a bit more, but at just under $1k it includes 282 oz-in stepper motors, antibacklash ballscrews, and all aluminum construction. Cut area about 12x23x4. Height depends on spindle motor and bit, I think.
> > http://www.kelinginc.net/CNCmachines3030.html
> >
> > Steve Greenfield AE7HD
> >
> >
> Has any one tried any of the Chinese routers that appear on E-Bay e.g.
>
> http://www.ebay.com/itm/CNC-Updated-3040-ROUTER-ENGRAVER-ENGRAVING-DRILLING-MILLING-MACHINE-11000prm-/221229509571?pt=LH_DefaultDomain_0&hash=item33824e6bc3
>
> Dave
> G4UGM
>


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

In article <knetpo+3anj@...>,
AlienRelics <alienrelics@...> wrote:

> This one is a bit more, but at just under $1k it includes 282 oz-in
> stepper motors, antibacklash ballscrews, and all aluminum construction.
> Cut area about 12x23x4. Height depends on spindle motor and bit, I
> think. http://www.kelinginc.net/CNCmachines3030.html

Looks nice, no controller though and that's the clever bit.

--
Stuart Winsor

Midlands RISC OS and Raspberry pi show, 13th July 2013

http://www.mug.riscos.org/show13/MUGshow.html