Homebrew PCBs

Hi Gus,

I sure am interested!  Vacuum could be a problem on this machines as 
I don't have room though.  However, magnets is an interesting idea I 
have not seen used - that one has my interest!  Please expand on it 
if you don't mind.

Chris



--- In Homebrew_PCBs@yahoogroups.com, Gus S Calabrese <gsc@...> 
wrote:
>
> magnets or vacuum can work well.
> I can expand this answer if you are interested.
> AGSC
> 
> On 2006-Aug 28, at 06:01hrs AM, lcdpublishing wrote:
> 
> Hi guys,
> 
> I am looking for some ideas on work holding for PCBs. I plan to do
> drilling and probably some isolation milling with my CNC machine.
> So far I have made good progress on most apsects of the machine's
> design, but the one thing that continues to elude me is the work
> holding.
> 
> I would think that there should be a waste or spoil board under the
> PCB that is being machined - this is normal in other similar
> applications. So, I figure I would use masonite or other similar
> and cheap material.
> 
> Of the very few photos I have seen for workholding, the only two
> methods I have seen so far are
> 
> 1) Basic toe clamps which clamp the work down to the table. Simple
> and effective, but would prefer something more elegant
> 
> 2) Some sort of clamping system that comes in from the edges. This
> is appealing as it can be made for short in height.
> 
> Both examples have limitations and such so I am looking for any and
> all ideas. If you have any suggestions or know of any photos 
showing
> PCB clamping, I sure would appreciate a link to the photos.
> 
> Chris
> 
> 
> 
> 
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