Homebrew PCBs

I bought a milling table from Enco (US) and modified it for minimal 
backlash and CNC on X and Y axis. Modified the drill press for CNC on 
the Z axis. Using DC geardhead motors retrofitted with encoders, a 
servo setup....TurboCNC is the software. Yes, there are photos.

--- In Homebrew_PCBs@yahoogroups.com, Mycroft2152 <mycroft2152@y...> 
wrote:
> HI Derek,
> 
> what design for the driller did you use? Any photos?
> 
> I am told that some laser printers will shrink the
> design slightly in one direction. Haven't had that
> problem yet, still designing my machine.
> 
> Myc
> 
> --- derekhawkins <derekhawkins@y...> wrote:
> 
> > Hi,
> > 
> > Just finished putting together a CNC drilling
> > machine and have now 
> > stumbled on a problem that I never
> > anticipated....The drilling machine 
> > appears to be more accurate than the printer used
> > for the PCB 
> > artwork....Tried both a HP2420 (laser) and Epson
> > 2200 (Inkjet) and the 
> > results were similar. Is this a known issue with CNC
> > setups?
> > 
> > 
> > 
> > 
> > 
> > 
> 
> 
> 
> 		
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