Quote:
Originally Posted by DavidU
At home I like to use the UV photo resist technique. I like to centre punch the PCB to aid in drill centring.
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David, how do you produce negative phototool (film.. it is OK for Ritronics PCB's, possibly still available at DS).
BTW, you do not really need centrepunch if the plot (or print or film) has holes (which are doable from Protel laser printouts). they will be etched and are sufficient for guiding the drill.
The film you shown us is the usual by-product by PCB manufactures from Gerbers, but they are also using CNC drill machines..