I don't know if you've considered another possibility we used to call=20
"drill and mill".  A drill like a mini hole saw is used to drill the=20
through holes and it also creates a pad from the hole saw perimeter.  As=20
a tech in the 80's, I made many  boards this way.  We would create a=20
layout on 0.1" graph paper (now, I would do it on a PC and print it, but=20
that and a useable printer were big bucks back then), tape it to plain=20
copperclad, and punch the hole locations, then "drill and mill".  I=20
wouldn't know where to find the mill drills now.

Joe W


On 12/31/2011 5:09 PM, Eric Kort wrote:
> So my latest electronics project worked great, and it looked great
> (IMHO) on the top side of the perfboard, but was a bit of a mess on
> the bottom (wiring) side which was a mix of bent leads and hookup wire
> used to make the necessary connections.  As a result I started to
> think about moving up to photoresist PCB etching.  But it occurs to me
> that the process would be significantly simpler if I did not need to
> drill the through holes.  I am curious to know if anyone knows of a
> source for copper clad perfboard (i.e., not just pads around the
> holes, but completely plated on one side).  With a bit of care with
> registration, it seems one could etch the traces on such perfboard and
> then the holes would be already be there!
>
> Does anyone know where copper clad perfboard could be obtained?  Or is
> that a fundamentally dumb idea?
>
> -Eric

--=20
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