Homebrew PCBs

Hi Herbert,
  Bingo.... I used LM18245 (motor driver)  and MSP430F123 (micro controller)  for step control. I bought ballscrews and linear slides from ebay. Mechanics seem to be stable as far as for light load but I don't thing that  it is possible to reach 3 mils (~ 75 micro meters) with plotter pen. May be you can say that who needs 3 mils. Mostly I am using 5-8 mils as a  minimum trace width.  I think easiest one is to adapt inkjet head to cnc. But neither  to find cheap piezo inkjet set head nor datasheet of Epson inkjet head is possible. Because of that I have decided to modify printer. I completely agree this is the difficult path. It seems it will be very difficult to find a solution for alignment problem and up to now I could not eliminate paper detection sensors of Epson C68  most probably they are embedded to head plastic or they are using capacitive detection. 
   


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