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Thread
2013-01-02 by Rick Sparber
2013-01-02 by Harvey White
>Has anyone played with putting a high intensity LED pointing up through theI've played with a TV camera pointing up (in my case, down) at the PC
>drill press table so it would be easier to see the circuit board land before
>drilling?
>
>
>
>Rick
>
>
>
>[Non-text portions of this message have been removed]
2013-01-02 by bebx2000
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote:
>
> Has anyone played with putting a high intensity LED pointing up through the
> drill press table so it would be easier to see the circuit board land before
> drilling?
>
>
>
> Rick
>
>
>
> [Non-text portions of this message have been removed]
>
2013-01-02 by Jeff Heiss
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote:
>
> Has anyone played with putting a high intensity LED pointing up through the
> drill press table so it would be easier to see the circuit board land before
> drilling?
>
>
>
> Rick
>
>
>
> [Non-text portions of this message have been removed]
>
[Non-text portions of this message have been removed]
2013-01-02 by Rick Sparber
2013-01-02 by Rick Sparber
On Tue, 1 Jan 2013 20:55:39 -0700, you wrote:
>Has anyone played with putting a high intensity LED pointing up through
>the drill press table so it would be easier to see the circuit board
>land before drilling?
I've played with a TV camera pointing up (in my case, down) at the PC board
with a pair of cross hairs on the monitor. The drill moves upwards. Main
problem is a good method to hold the board down.
Harvey
>
>
>
>Rick
>
>
>
>[Non-text portions of this message have been removed]
------------------------------------
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2013-01-02 by Rick Sparber
2013-01-02 by Harvey White
>I can see how holding the board down with the drill coming up through itSo can I. The approach was to use a vacuum, but there are mechanical
>would be a problem.
>
>Rick
>
>-----Original Message-----
>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of Harvey White
>Sent: Tuesday, January 01, 2013 9:47 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: Re: [Homebrew_PCBs] circuit board drilling question
>
>On Tue, 1 Jan 2013 20:55:39 -0700, you wrote:
>
>>Has anyone played with putting a high intensity LED pointing up through
>>the drill press table so it would be easier to see the circuit board
>>land before drilling?
>
>I've played with a TV camera pointing up (in my case, down) at the PC board
>with a pair of cross hairs on the monitor. The drill moves upwards. Main
>problem is a good method to hold the board down.
>
>Harvey
>
>>
>>
>>
>>Rick
>>
>>
>>
>>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
2013-01-02 by Rick Sparber
On Wed, 2 Jan 2013 06:33:41 -0700, you wrote:
>I can see how holding the board down with the drill coming up through
>it would be a problem.
So can I. The approach was to use a vacuum, but there are mechanical
problems, as in not enough suction at the moment. I have more mechanical
work to do. Sadly enough, the microprocessor, drill, mechanical work to get
it to go up and down properly, all that lovely stuff was relatively trivial.
Another option might be a clamping foot or bar. Problem is that it would
cause some vibration, and that might move the board.
Harvey
>
>Rick
>
>-----Original Message-----
>From: Homebrew_PCBs@yahoogroups.com
>[mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of Harvey White
>Sent: Tuesday, January 01, 2013 9:47 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: Re: [Homebrew_PCBs] circuit board drilling question
>
>On Tue, 1 Jan 2013 20:55:39 -0700, you wrote:
>
>>Has anyone played with putting a high intensity LED pointing up
>>through the drill press table so it would be easier to see the circuit
>>board land before drilling?
>
>I've played with a TV camera pointing up (in my case, down) at the PC
>board with a pair of cross hairs on the monitor. The drill moves
>upwards. Main problem is a good method to hold the board down.
>
>Harvey
>
>>
>>
>>
>>Rick
>>
>>
>>
>>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
------------------------------------
Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
2013-01-02 by Malcolm Parker-Lisberg
On Wed, 2 Jan 2013 06:33:41 -0700, you wrote:
>I can see how holding the board down with the drill coming up through it
>would be a problem.
So can I. The approach was to use a vacuum, but there are mechanical
problems, as in not enough suction at the moment. I have more
mechanical work to do. Sadly enough, the microprocessor, drill,
mechanical work to get it to go up and down properly, all that lovely
stuff was relatively trivial.
Another option might be a clamping foot or bar. Problem is that it
would cause some vibration, and that might move the board.
Harvey
>
>Rick
>
>-----Original Message-----
>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of Harvey White
>Sent: Tuesday, January 01, 2013 9:47 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: Re: [Homebrew_PCBs] circuit board drilling question
>
>On Tue, 1 Jan 2013 20:55:39 -0700, you wrote:
>
>>Has anyone played with putting a high intensity LED pointing up through
>>the drill press table so it would be easier to see the circuit board
>>land before drilling?
>
>I've played with a TV camera pointing up (in my case, down) at the PC board
>with a pair of cross hairs on the monitor. The drill moves upwards. Main
>problem is a good method to hold the board down.
>
>Harvey
>
>>
>>
>>
>>Rick
>>
>>
>>
>>[Non-text portions of this message have been removed]
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
[Non-text portions of this message have been removed]
2013-01-02 by Harvey White
>Drilling from below presents no problems. I have used the professional version from Megauk, see half way down the page:At that price, it's certainly out of my range.
><http://www.megauk.com/pcb_drilling_machines.php>
>But at that price, it is out of range of most of the home users. Making one should not preset too many problems.
>
>Malcolm
>
>
>
>I don't suffer from insanity I enjoy it!
>Mene, mene, tekel, upharsin
>The writing is on the wall.
>
>
>________________________________
> From: Harvey White <madyn@...>
>To: Homebrew_PCBs@yahoogroups.com
>Sent: Wednesday, January 2, 2013 2:29 PM
>Subject: Re: [Homebrew_PCBs] circuit board drilling question
>
>
>
>On Wed, 2 Jan 2013 06:33:41 -0700, you wrote:
>
>>I can see how holding the board down with the drill coming up through it
>>would be a problem.
>
>So can I. The approach was to use a vacuum, but there are mechanical
>problems, as in not enough suction at the moment. I have more
>mechanical work to do. Sadly enough, the microprocessor, drill,
>mechanical work to get it to go up and down properly, all that lovely
>stuff was relatively trivial.
>
>Another option might be a clamping foot or bar. Problem is that it
>would cause some vibration, and that might move the board.
>
>Harvey
>
>>
>>Rick
>>
>>-----Original Message-----
>>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>>On Behalf Of Harvey White
>>Sent: Tuesday, January 01, 2013 9:47 PM
>>To: Homebrew_PCBs@yahoogroups.com
>>Subject: Re: [Homebrew_PCBs] circuit board drilling question
>>
>>On Tue, 1 Jan 2013 20:55:39 -0700, you wrote:
>>
>>>Has anyone played with putting a high intensity LED pointing up through
>>>the drill press table so it would be easier to see the circuit board
>>>land before drilling?
>>
>>I've played with a TV camera pointing up (in my case, down) at the PC board
>>with a pair of cross hairs on the monitor. The drill moves upwards. Main
>>problem is a good method to hold the board down.
>>
>>Harvey
>>
>>>
>>>
>>>
>>>Rick
>>>
>>>
>>>
>>>[Non-text portions of this message have been removed]
>>
>>
>>
>>------------------------------------
>>
>>Be sure to visit the group home and check for new Links, Files, and Photos:
>>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>
>
>
>
>
>[Non-text portions of this message have been removed]
2013-01-03 by bebx2000
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" <rgsparber@...> wrote:
>
> Baxter,
>
> Our approaches are rather different. I'm hoping to shine light through the
> board so the pad feature is clearly outlined. I figure that would be more
> precise and clearer than shining lights down on the board from above and
> seeing the reflected light. From above I would be unable to shine straight
> down so would get shadows. From below I can shine straight up. Hope to have
> this mod tested today.
2013-01-03 by Missouri Guy
>the
> Baxter,
>
> Our approaches are rather different. I'm hoping to shine light through
> board so the pad feature is clearly outlined. I figure that would bemore
> precise and clearer than shining lights down on the board from aboveand
> seeing the reflected light. From above I would be unable to shinestraight
> down so would get shadows. From below I can shine straight up. Hope tohave
> this mod tested today.[Non-text portions of this message have been removed]
2013-01-03 by bebx2000
--- In Homebrew_PCBs@yahoogroups.com, Missouri Guy wrote:
>
> Neat idea, but I gotta ask...does the light down below collect any
> dust from the drilling or does a vacuum pretty much
> take care of that.
>
> Charlie
>
2013-01-03 by Rick Sparber
2013-01-03 by Missouri Guy
--- In Homebrew_PCBs@yahoogroups.com, Missouri Guy wrote:
>
> Neat idea, but I gotta ask...does the light down below collect any
> dust from the drilling or does a vacuum pretty much
> take care of that.
>
> Charlie
>
[Non-text portions of this message have been removed]
2013-01-03 by bebx2000
> I put my drill press rather high and sat on a low chair so my eyes are about
> even with the pull handle. How do you sit so you can see the action?
2013-01-06 by Rick Sparber
> I put my drill press rather high and sat on a low chair so my eyes are------------------------------------
> about even with the pull handle. How do you sit so you can see the action?
2013-01-06 by Harvey White
>Baxter,Take a small piece of aluminum and drill a hole in it the size of your
>
>Your insights are very helpful. I had the same problem with too much light
>washing out the beam and too little light not letting me see the area and
>drill bit. I now understand why a laser is needed and a high intensity LED
>is not bright enough. It is too bad the laser beam couldn't be narrow enough
>to match the diameter of the drill. Then there would be no question about
>where it would hit.
>
>I did think about some electrical way to tell when the drill was centered in
>the hole. But it would require me to move a probe to each trace and that
>would be a PITA. I wonder if something like a sewing machine foot could
>work. It would be a half circle supported by a spring arrangement. The goal
>is to minimize parallax and speed up the drilling.
>
>Rick
>
>-----Original Message-----
>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of bebx2000
>Sent: Thursday, January 03, 2013 1:59 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: circuit board drilling question
>
>
>
>Rick,
>
>I look down at the board at about 45deg in subdued room lighting. When the
>beam is hitting copper you don't see any thing. when it shines on etched
>areas you see a spot. When it is under a pad with an etched hole you will
>see the spot. Then adjust the board in the horizontal plane with tiny
>movements for the greatest spot intensity; then drill.
>
>This drilling setup is not an original idea. I came across the concept from
>a forum post using a cigar box. I use a Proxxon drill stand with a Proxxon
>hand tool and there wasn't enough room for the cigar box so I adapted it to
>a smaller box (4" x 3" x 1 1/2"). I am using a $5 dealExtreme red laser
>module directly hooked to 3 AA cells. A $2 Staples steel ruler was cut to
>fit in the bottom of the box and glued. The laser is held with a large paper
>binder clip which is fastened to the the ruler with small button Neodymium
>magnets. The 45 deg mirror was fashioned from a piece of 1/2' 90 deg
>extruded aluminum stock with a craft store 1/2" strip mirror glued to one
>face. The mirror is held in place perpendicular to the laser with double
>sided sticky tape. I used magnets to secure the laser to make it easier to
>adjust it relative to the mirror and the hole in the top of the box. This is
>a real jury rig, but it seems to work ok.
>
>Baxter
>> I put my drill press rather high and sat on a low chair so my eyes are
>> about even with the pull handle. How do you sit so you can see the action?
>
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
2013-01-07 by Rick Sparber
On Sun, 6 Jan 2013 14:52:25 -0700, you wrote:
>Baxter,
>
>Your insights are very helpful. I had the same problem with too much
>light washing out the beam and too little light not letting me see the
>area and drill bit. I now understand why a laser is needed and a high
>intensity LED is not bright enough. It is too bad the laser beam
>couldn't be narrow enough to match the diameter of the drill. Then
>there would be no question about where it would hit.
Take a small piece of aluminum and drill a hole in it the size of your
expected hole (and drill bit). Put this a little under the board, far
enough below the point of maximum drill penetration. This mask sets the
size of the laser beam on the underside of the board. You can make this an
exact alignment by drilling a hole in a spare piece of board and adjusting
the mask for maximum brightness through the hole.
Harvey
>
>I did think about some electrical way to tell when the drill was
>centered in the hole. But it would require me to move a probe to each
>trace and that would be a PITA. I wonder if something like a sewing
>machine foot could work. It would be a half circle supported by a
>spring arrangement. The goal is to minimize parallax and speed up the
drilling.
>
>Rick
>
>-----Original Message-----
>From: Homebrew_PCBs@yahoogroups.com
>[mailto:Homebrew_PCBs@yahoogroups.com]
>On Behalf Of bebx2000
>Sent: Thursday, January 03, 2013 1:59 PM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: circuit board drilling question
>
>
>
>Rick,
>
>I look down at the board at about 45deg in subdued room lighting. When
>the beam is hitting copper you don't see any thing. when it shines on
>etched areas you see a spot. When it is under a pad with an etched hole
>you will see the spot. Then adjust the board in the horizontal plane
>with tiny movements for the greatest spot intensity; then drill.
>
>This drilling setup is not an original idea. I came across the concept
>from a forum post using a cigar box. I use a Proxxon drill stand with a
>Proxxon hand tool and there wasn't enough room for the cigar box so I
>adapted it to a smaller box (4" x 3" x 1 1/2"). I am using a $5
>dealExtreme red laser module directly hooked to 3 AA cells. A $2
>Staples steel ruler was cut to fit in the bottom of the box and glued.
>The laser is held with a large paper binder clip which is fastened to
>the the ruler with small button Neodymium magnets. The 45 deg mirror
>was fashioned from a piece of 1/2' 90 deg extruded aluminum stock with
>a craft store 1/2" strip mirror glued to one face. The mirror is held
>in place perpendicular to the laser with double sided sticky tape. I
>used magnets to secure the laser to make it easier to adjust it
>relative to the mirror and the hole in the top of the box. This is a real
jury rig, but it seems to work ok.
>
>Baxter
>> I put my drill press rather high and sat on a low chair so my eyes
>> are about even with the pull handle. How do you sit so you can see the
action?
>
>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
------------------------------------
Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
2013-02-09 by dennis.lewis5
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>
> Has anyone played with putting a high intensity LED pointing up through the
> drill press table so it would be easier to see the circuit board land before
> drilling?
>
>
>
> Rick
>
>
>
> [Non-text portions of this message have been removed]
>
2013-02-11 by Rick Sparber
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>
> Has anyone played with putting a high intensity LED pointing up
> through the drill press table so it would be easier to see the circuit
> board land before drilling?
>
>
>
> Rick
>
>
>
> [Non-text portions of this message have been removed]
>
------------------------------------
Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
2013-02-11 by dennis.lewis5
--- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>
> Dennis,
>
> I can do OK with just top light and about 0.01" of clearance between board
> and drill during positioning. But it would take less concentration if I
> added a means of locating the touchdown point. Maybe a thin clear plastic
> plate would do the trick. I would just attach an L shaped piece and then let
> the drill make the hole so it would be self aligning. Hmmm.
>
> Rick
>
> -----Original Message-----
> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
> On Behalf Of dennis.lewis5
> Sent: Saturday, February 09, 2013 2:50 PM
> To: Homebrew_PCBs@yahoogroups.com
> Subject: [Homebrew_PCBs] Re: circuit board drilling question
>
> Rick,
> Recently I did this. I cannot tell you that it was a terrific improvement.
> In my arrangement there are overhead lamps as well as the one below the
> deck. I am still experimenting but this probably would have worked better if
> the overhead lamps were dimmed a little more and the copper was not as
> reflective, maybe cleaning the board before drilling isn't the way to do it.
>
> The led I used was not specified, just claimed to be super bright white,
> 4.5v. I am running it at about 30ma., as much as I dare.
>
>
> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
> >
> > Has anyone played with putting a high intensity LED pointing up
> > through the drill press table so it would be easier to see the circuit
> > board land before drilling?
> >
> >
> >
> > Rick
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
2013-02-12 by Rick Sparber
On Feb 11, 2013, at 3:04 PM, "dennis.lewis5" <dennis.lewis5@...> wrote:
> I would think the plastic might be distracting since it would be like looking into a mirror. Maybe two line lasers set up to provide a crosshair target?
>
> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>
>> Dennis,
>>
>> I can do OK with just top light and about 0.01" of clearance between board
>> and drill during positioning. But it would take less concentration if I
>> added a means of locating the touchdown point. Maybe a thin clear plastic
>> plate would do the trick. I would just attach an L shaped piece and then let
>> the drill make the hole so it would be self aligning. Hmmm.
>>
>> Rick
>>
>> -----Original Message-----
>> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>> On Behalf Of dennis.lewis5
>> Sent: Saturday, February 09, 2013 2:50 PM
>> To: Homebrew_PCBs@yahoogroups.com
>> Subject: [Homebrew_PCBs] Re: circuit board drilling question
>>
>> Rick,
>> Recently I did this. I cannot tell you that it was a terrific improvement.
>> In my arrangement there are overhead lamps as well as the one below the
>> deck. I am still experimenting but this probably would have worked better if
>> the overhead lamps were dimmed a little more and the copper was not as
>> reflective, maybe cleaning the board before drilling isn't the way to do it.
>>
>> The led I used was not specified, just claimed to be super bright white,
>> 4.5v. I am running it at about 30ma., as much as I dare.
>>
>>
>> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>>
>>> Has anyone played with putting a high intensity LED pointing up
>>> through the drill press table so it would be easier to see the circuit
>>> board land before drilling?
>>>
>>>
>>>
>>> Rick
>>>
>>>
>>>
>>> [Non-text portions of this message have been removed]
>>
>>
>>
>>
>> ------------------------------------
>>
>> Be sure to visit the group home and check for new Links, Files, and Photos:
>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
2013-02-12 by Harvey White
>Dennis,How about:
>
>I have not tried the plastic yet but suspect you are right. It might also trap shavings. But I am shooting for a simple solution and lasers may be taking me in the wrong direction.
>
>I wonder if a small pointer that retracts out of the way as the drill feeds down might be made simply....
>
>Rick
>
>On Feb 11, 2013, at 3:04 PM, "dennis.lewis5" <dennis.lewis5@...> wrote:
>
>> I would think the plastic might be distracting since it would be like looking into a mirror. Maybe two line lasers set up to provide a crosshair target?
>>
>> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>>
>>> Dennis,
>>>
>>> I can do OK with just top light and about 0.01" of clearance between board
>>> and drill during positioning. But it would take less concentration if I
>>> added a means of locating the touchdown point. Maybe a thin clear plastic
>>> plate would do the trick. I would just attach an L shaped piece and then let
>>> the drill make the hole so it would be self aligning. Hmmm.
>>>
>>> Rick
>>>
>>> -----Original Message-----
>>> From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
>>> On Behalf Of dennis.lewis5
>>> Sent: Saturday, February 09, 2013 2:50 PM
>>> To: Homebrew_PCBs@yahoogroups.com
>>> Subject: [Homebrew_PCBs] Re: circuit board drilling question
>>>
>>> Rick,
>>> Recently I did this. I cannot tell you that it was a terrific improvement.
>>> In my arrangement there are overhead lamps as well as the one below the
>>> deck. I am still experimenting but this probably would have worked better if
>>> the overhead lamps were dimmed a little more and the copper was not as
>>> reflective, maybe cleaning the board before drilling isn't the way to do it.
>>>
>>> The led I used was not specified, just claimed to be super bright white,
>>> 4.5v. I am running it at about 30ma., as much as I dare.
>>>
>>>
>>> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>>>
>>>> Has anyone played with putting a high intensity LED pointing up
>>>> through the drill press table so it would be easier to see the circuit
>>>> board land before drilling?
>>>>
>>>>
>>>>
>>>> Rick
>>>>
>>>>
>>>>
>>>> [Non-text portions of this message have been removed]
>>>
>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> Be sure to visit the group home and check for new Links, Files, and Photos:
>>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>
>>
>> ------------------------------------
>>
>> Be sure to visit the group home and check for new Links, Files, and Photos:
>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>
2013-02-12 by Boman33
2013-02-13 by Rick Sparber
2013-02-13 by Rick Sparber
On Tue, 12 Feb 2013 04:57:56 -0700, you wrote:
>Dennis,
>
>I have not tried the plastic yet but suspect you are right. It might also
trap shavings. But I am shooting for a simple solution and lasers may be
taking me in the wrong direction.
>
>I wonder if a small pointer that retracts out of the way as the drill feeds
down might be made simply....
How about:
1) a BB gun or pellet gun (project dot at infinity) type of sight.
2) an angled mirror that lets the sight be horizontal rather than vertical.
Not the most elegant of mechanisms, but perhaps the same mechanism that's
used on telescopes to provide a 1x sight (google TELRAD sight) might work.
very little optics involved, I think
Harvey
>
>Rick
>
>On Feb 11, 2013, at 3:04 PM, "dennis.lewis5" <dennis.lewis5@...>
wrote:
>
>> I would think the plastic might be distracting since it would be like
looking into a mirror. Maybe two line lasers set up to provide a crosshair
target?
>>
>> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>>
>>> Dennis,
>>>
>>> I can do OK with just top light and about 0.01" of clearance between
>>> board and drill during positioning. But it would take less
>>> concentration if I added a means of locating the touchdown point.
>>> Maybe a thin clear plastic plate would do the trick. I would just
>>> attach an L shaped piece and then let the drill make the hole so it
would be self aligning. Hmmm.
>>>
>>> Rick
>>>
>>> -----Original Message-----
>>> From: Homebrew_PCBs@yahoogroups.com
>>> [mailto:Homebrew_PCBs@yahoogroups.com]
>>> On Behalf Of dennis.lewis5
>>> Sent: Saturday, February 09, 2013 2:50 PM
>>> To: Homebrew_PCBs@yahoogroups.com
>>> Subject: [Homebrew_PCBs] Re: circuit board drilling question
>>>
>>> Rick,
>>> Recently I did this. I cannot tell you that it was a terrific
improvement.
>>> In my arrangement there are overhead lamps as well as the one below
>>> the deck. I am still experimenting but this probably would have
>>> worked better if the overhead lamps were dimmed a little more and
>>> the copper was not as reflective, maybe cleaning the board before
drilling isn't the way to do it.
>>>
>>> The led I used was not specified, just claimed to be super bright
>>> white, 4.5v. I am running it at about 30ma., as much as I dare.
>>>
>>>
>>> --- In Homebrew_PCBs@yahoogroups.com, "Rick Sparber" wrote:
>>>>
>>>> Has anyone played with putting a high intensity LED pointing up
>>>> through the drill press table so it would be easier to see the
>>>> circuit board land before drilling?
>>>>
>>>>
>>>>
>>>> Rick
>>>>
>>>>
>>>>
>>>> [Non-text portions of this message have been removed]
>>>
>>>
>>>
>>>
>>> ------------------------------------
>>>
>>> Be sure to visit the group home and check for new Links, Files, and
Photos:
>>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>
>>
>> ------------------------------------
>>
>> Be sure to visit the group home and check for new Links, Files, and
Photos:
>> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>>
>>
>>
------------------------------------
Be sure to visit the group home and check for new Links, Files, and Photos:
http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
2013-02-14 by Howard Chester
--- On Wed, 13/2/13, Rick Sparber <rgsparber@...> wrote:
From: Rick Sparber <rgsparber@...>
Subject: RE: [Homebrew_PCBs] Re: circuit board drilling question
To: Homebrew_PCBs@yahoogroups.com
Date: Wednesday, 13 February, 2013, 13:11
>Harvey,
>The problem I have with my present arrangement is parallax. I have the >end of my drill about 0.01" above the board and I am able to sight down at about
>a 45° angle.
>I also need to be able to see a few inches around the hole at the same time
>so I can move to the next hole.
>Rick
Hello Rick,
A posible solution;-
Make a jig for your drill to mount under the board surface(a pedal with a linkage to raise the drill).
Use a dot or cross laser mounted on a Lab stand "foot plate" and goose-neck above the drilling area.
Drill a test hole on a spare piece of board and aliagn the laser.
A permanant Drilling Base could be made from a piece of flat aluminuim sheet with a 5mm hole in the centre of the drilling area, mounting the Lab stand on the sheet.
Adding a cheap USB microscope connected to a "cheapie" PC and Flat LCD monitor using the Lab stand would help with any member with fading eyesight.
I intend to construct this rig soon (busy moving at the moment and as such, all my Kit is in boxes....AAAAGGGHHH)
A soon as I can, I will post construction diagrams and pics.
chester
[Non-text portions of this message have been removed]
2013-02-14 by Rick Sparber