Homebrew PCBs

I'm back for a second round. This time I changed tacks - I have turned the $270 CNC paper cutter into a 2.1D mill for mil-etching PCBs - instead of the original drag-knife method. See video here http://www.youtube.com/watch?v=rDRN1_i0vJU and some updated info here http://research.microsoft.com/en-us/projects/papercutterpcbs/

I haven't calibrated the setup yet like ipm, position tolerance and repeatability and minimum isolation track width & repeatability but that will come. The original method I was trying to perfect was to drag a carbide knife through copper cladding to affect electrical isolation but the swarf remaining was a problem.

Mike


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