My new way to make small PCBs

Discussion in 'General Electronics Chat' started by Markd77, Sep 18, 2011.

  1. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
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    I made a pantogram from lollypop sticks and machine screws and nuts, the centre one is sharpened to scribe on the copper clad board. The distance between all adjacent screws is equal to make a 2:1 reduction.
    The design is printed at double size and then traced with the screw on the right side, applying a little pressure to the scribe, the left side screw is fixed.
    Then it just needs going over with an etch resist pen (I use an Edding 404) and etching.
    For scale the pads with holes are 2.54mm (0.1 inches) spacing.
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    Last edited: Sep 18, 2011
  2. debjit625

    Well-Known Member

    Apr 17, 2010
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    I use carbon paper to do that,I place a carbon paper over the board and use the PCB print out to trace and over the trace I use etch resist pen.
     
  3. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
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    That sounds like useful stuff, I might try to get some.
     
  4. bluebrakes

    Active Member

    Oct 17, 2009
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    Never thought of that, clever idea.
     
  5. Wendy

    Moderator

    Mar 24, 2008
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    I used to freehand with sharpie, it looked somewhat similar. What works, works.
     
  6. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Pretty cool pantograph technique Mark!

    I guess you have already thought of mounting the sharpie pen in the pantograph and drawing the PCB as you go (instead of afterward)?
     
  7. Markd77

    Thread Starter Senior Member

    Sep 7, 2009
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    Thanks, I'd thought about it but I wasn't sure if I'd end up making the tracks too thick in places.
     
  8. THE_RB

    AAC Fanatic!

    Feb 11, 2008
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    Yep that's what I thought, you need a lot of fine hand control to get those thin traces.

    Anyway thanks for sharing, i had seen pantographs used in engraving before but never for PCB reduction. :)
     
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