Homebrew PCBs

rOn Mon, 25 Apr 2005 15:47:08 -0400, Roy J. Tellason  
<rtellason@...> wrote:

>
> Is this assuming any particular board material?


Glassfiber reinforced. Phenolic paper will not dull the bits as quickly i  
assume.

If the hole quality would be better (especially the burr on the copper) i  
would go back to freehand drilling. It was way faster and the accuracy  
actually better because the drill finds the center on it's own. The  
carbide drills are so sharp and the press so stiff that i must align much  
better or it will just cut in the wrong place.
I think for a beginner HSS is acceptable anyway.


Is anyone here using toner transfer and a CNC? (or at least toner artwork,  
photo, and a CNC?)
I kind of start to resent drilling and would re-consider a CNC, but my  
fear is the laser distortion, shrinkage, ... is too big and things would  
be off. No point in building a CNC if it can't be used.

How could one best measure distortions?

ST