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PCB Production

Discussion in 'Electronic Design' started by M.Daughtry, Aug 16, 2004.

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  1. M.Daughtry

    M.Daughtry Guest

    I have started to dabble in creating my own printed circuit boards and I
    have a question on producing them. I have created a few using the "direct
    etch" method and am ready (I think) to move up to using photo-sensitive

    My question is this: Should I precut my boards and use a single mask to
    expose it or use a multiple mask to expose the whole board before I cut it

    Any insight would be appreciated. And please, be kind as I am a newbie.
  2. Leon Heller

    Leon Heller Guest

    It's best to cut the board to size first. You probably only want to make one
    or two at a time, anyway. If you try to expose a large board with home-made
    equipment it might be difficult to get even exposure over the whole board.
    Also, keeping the transparency in contact with the board over a large area
    will be difficult unless you use a vacuum, as is done with professional

  3. M.Daughtry

    M.Daughtry Guest

    Thanks for your input Leon. I was about decided to do the cut beforehand
    because even though I think I have built a pretty good cutting table/guide
    for doing it, there is always the human factor in cutting it. And yes, I'll
    probably be doing "one offs" till I get a design that I might want to
    distribute to a niche market. The current boards (6" X 9") I have, will
    produce 7 ea 1 1/4" X 6" boards with 1/4" left over (which I am sure would
    be taken up in the cutting process).
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