Homebrew_PCBs

>Actually it would be less cumbersome, because you could see the drill
>and not only rely on the camera.
>Also you can do without the clamping foot for a top down drill.
>
>When I built my drill stand I prepared it for an optical sight.
>It is a top drill setup, and I was considering a simple projection
>mechanism (think overhead projector) that looked on the board from
>below. I experimented with a lens and some mirrors and I think it
>might have worked.
>
>Plan B was to use a small camera instead, if the optics didn't work out.
>
>Turns out I don't need any optical sight after all.
>
>ST
>
>
>
>On Mon, May 24, 2010 at 10:09 PM, Mark Lerman <mlerman@...> wrote:
>
> > Very nice solution, and an obvious (now that it's pointed out) way to
> > go. A bottom drill with a camera sight, a modified microscope stage
> > to hold the board and you're done! Of course, it would be just as
> > logical to put the camera on the bottom and the drill on top. Just
> > have to maybe use a little vacuum to stop the drill debris from
> > covering the lens. Might be a little more cumbersome than a bottom
> > drill because you would be completely dependent on the monitor, but
> > still should work well and be easy to implement.
> >
> >
> > Mark
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>

On Mon, May 24, 2010 at 10:37 PM, Mark Lerman <mlerman@...> wrote:
>
> I was thinking that the board would have to be upside down when you
> drilled it because the camera would have to see the top of the board,
> but you're right, there will be pads on the bottom of the board,
> too. Yes, camera on bottom is probably better, and certainly easier
> to implement. I've got a video otoscope that's made for close focus -
> have to give it a try.
>
> Mark
>

>
>ST
>
>On Mon, May 24, 2010 at 10:37 PM, Mark Lerman <mlerman@...> wrote:
>>
>> I was thinking that the board would have to be upside down when you
>> drilled it because the camera would have to see the top of the board,
>> but you're right, there will be pads on the bottom of the board,
>> too. Yes, camera on bottom is probably better, and certainly easier
>> to implement. I've got a video otoscope that's made for close focus -
>> have to give it a try.
>>
>> Mark
>>
>
>
>------------------------------------
>
>Be sure to visit the group home and check for new Links, Files, and Photos:
>http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>

>On Mon, 24 May 2010 22:40:31 +0200, you wrote:
>
> >I think even with a single sided board the light shining through the
> >center of the pad might be enought to locate it depending on PCB
> >material. Or one could turn it over, of course.
>
>
>In my experience, trying to locate holes and align them, no. You
>wouldn't b happy with the results. I'd say either drill from bottom,
>right side up, or drill from top, top side down.
>
>Problem with turning the board over is not the dust collection, it's
>the large (and bulky) drill mechanism. Clamps are not always needed,
>but might help. Hydraulics are not needed, but a spring and solenoid
>might help.
>
>It does sound like an interesting project.
>
>Harvey
>
> >
> >ST
> >
> >On Mon, May 24, 2010 at 10:37 PM, Mark Lerman <mlerman@...> wrote:
> >>
> >> I was thinking that the board would have to be upside down when you
> >> drilled it because the camera would have to see the top of the board,
> >> but you're right, there will be pads on the bottom of the board,
> >> too. Yes, camera on bottom is probably better, and certainly easier
> >> to implement. I've got a video otoscope that's made for close focus -
> >> have to give it a try.
> >>
> >> Mark
> >>
> >
> >
> >------------------------------------
> >
> >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
>
>
>

>
> On Mon, 24 May 2010 22:40:31 +0200, you wrote:
>
> >I think even with a single sided board the light shining through the
> >center of the pad might be enought to locate it depending on PCB
> >material. Or one could turn it over, of course.
>

>
>Mark
>
>
>At 05:59 PM 5/24/2010, you wrote:
>>On Mon, 24 May 2010 22:40:31 +0200, you wrote:
>>
>> >I think even with a single sided board the light shining through the
>> >center of the pad might be enought to locate it depending on PCB
>> >material. Or one could turn it over, of course.
>>
>>
>>In my experience, trying to locate holes and align them, no. You
>>wouldn't b happy with the results. I'd say either drill from bottom,
>>right side up, or drill from top, top side down.
>>
>>Problem with turning the board over is not the dust collection, it's
>>the large (and bulky) drill mechanism. Clamps are not always needed,
>>but might help. Hydraulics are not needed, but a spring and solenoid
>>might help.
>>
>>It does sound like an interesting project.
>>
>>Harvey
>>
>> >
>> >ST
>> >
>> >On Mon, May 24, 2010 at 10:37 PM, Mark Lerman <mlerman@...> wrote:
>> >>
>> >> I was thinking that the board would have to be upside down when you
>> >> drilled it because the camera would have to see the top of the board,
>> >> but you're right, there will be pads on the bottom of the board,
>> >> too. Yes, camera on bottom is probably better, and certainly easier
>> >> to implement. I've got a video otoscope that's made for close focus -
>> >> have to give it a try.
>> >>
>> >> Mark
>> >>
>> >
>> >
>> >------------------------------------
>> >
>> >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
>
>
>

>
> Is a dremel adequate for drilling pcbs using carbide drills? I know
> it isn't good enough for pcb routing, but just for drilling?? If not,
> what is a good, small, reasonably priced alternative?

On Wed, May 26, 2010 at 1:22 AM, Harvey White <madyn@...> wrote:
> On Tue, 25 May 2010 16:02:07 -0400, you wrote:
>
>>Is a dremel adequate for drilling pcbs using carbide drills? I know
>>it isn't good enough for pcb routing, but just for drilling?? If not,
>>what is a good, small, reasonably priced alternative?
>
> A dremel will work with carbide drills and the dremel stand.
>
> Having said that, the runout (wobble) on a dremel is rather nasty, and
> limits your ability to do fine holes (say #75 or so). Drill wobbles
> too much and makes too big a hole. The drill press attachment is
> wobbly at best.
>
> I have a (more expensive) Proxxon. It's the industrial model, 120
> vac, 20K rpm. Much better bearings, better collet. Have a bit of a
> homemade drill press stand, works reasonably well, no idea how good
> the proxxon stock model works.
>
> I like the Proxxon better, bought it after the Dremel (hand model, 70
> some dollars, nice kit, good for what it does, not as good for pcb
> drilling.)
>
> Harvey
>
>>
>>Mark
>>
>>
>>At 05:59 PM 5/24/2010, you wrote:
>>>On Mon, 24 May 2010 22:40:31 +0200, you wrote:
>>>
>>> >I think even with a single sided board the light shining through the
>>> >center of the pad might be enought to locate it depending on PCB
>>> >material. Or one could turn it over, of course.
>>>
>>>
>>>In my experience, trying to locate holes and align them, no. You
>>>wouldn't b happy with the results. I'd say either drill from bottom,
>>>right side up, or drill from top, top side down.
>>>
>>>Problem with turning the board over is not the dust collection, it's
>>>the large (and bulky) drill mechanism. Clamps are not always needed,
>>>but might help. Hydraulics are not needed, but a spring and solenoid
>>>might help.
>>>
>>>It does sound like an interesting project.
>>>
>>>Harvey
>>>
>>> >
>>> >ST
>>> >
>>> >On Mon, May 24, 2010 at 10:37 PM, Mark Lerman <mlerman@...> wrote:
>>> >>
>>> >> I was thinking that the board would have to be upside down when you
>>> >> drilled it because the camera would have to see the top of the board,
>>> >> but you're right, there will be pads on the bottom of the board,
>>> >> too. Yes, camera on bottom is probably better, and certainly easier
>>> >> to implement. I've got a video otoscope that's made for close focus -
>>> >> have to give it a try.
>>> >>
>>> >> Mark
>>> >>
>>> >
>>> >
>>> >------------------------------------
>>> >
>>> >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
>>
>>
>>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>

>
> Is a dremel adequate for drilling pcbs using carbide drills? I know
> it isn't good enough for pcb routing, but just for drilling?? If not,
> what is a good, small, reasonably priced alternative?
>
> Mark
>