Why blind alignment? Crank up enough backlight and you should be able to see through the paper. Bertho From Michel Baguet Sent: Friday, July 04, 2008 12:39 ----> snip So I believe I'll get back to blind alignment with plain paper by first drilling 12 or 16 mils holes at the corner of the pcb to etch and holes in the sheets and align them with needles in the PCB.
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RE: [Homebrew_PCBs] double sided PCB, accuracy
2008-07-04 by Bertho Boman