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  1. #1
    Join Date
    Jan 2006
    Posts
    67

    Newbie PCB Question

    In process of learning to make my own PCB using toner transfer method. After all components are added do you need to protect the copper trace from corrosion? Is solder a good material? Is so is it advantageous to solder cover the copper before adding the components, seems it would make soldering easier. Know you would have to redrill the holes but seems solder being soft would make this an easy job?

  2. #2
    Join Date
    Feb 2006
    Posts
    102
    Covering the all the traces with solder is a questionable practice due to the possible
    entrapment of corrosive flux, especially if you are using a flux core wire
    solder. Some people coat the traces with solder paste (surface mount
    soldering paste preferred) and then place the board in a surplus “Toster
    Oven” ( don’t use for food after solder has been inside one of these).
    Or use a Hot Air Heat Gun to melt the solder.

    The better option I think is to use a Tin Plating solution like Datak’s “TINNIT”
    ( http://www.elexp.biz/pro_er18.htm ) or “COOL-AMP”
    ( http://www.cool-amp.com/New%20cool%20amp%20page.htm )

    If you have not taken a look at the “Homebrew_PCBs” group on YAHOO
    ( http://groupyahoo.com/group/Homebrew_PCBs/ ) take a look,
    lots of good information there.
    Mike_L

    When I was younger I thought I knew EVERYTHING,
    NOW, the older I get the more I find out I don’t know!

  3. #3
    Join Date
    Jan 2005
    Posts
    1695
    I always coat a layer of solder on my boards using my soldering iron. Corrosion won't be a problem with rosin or "no clean" flux. Acid flux should never be used on pcbs.

  4. #4
    Join Date
    Feb 2006
    Posts
    102
    The link for YAHOO Homebrew_PCBs SHOULD be
    "groups DOT yahoo.com/group/Homebrew_PCBs/"
    I have seen a number of Yahoo Groups links mangled
    by the board software. It drops the "s" from "groups"
    and the dot between "groups" and "yahoo", why is that?
    Mike_L

    When I was younger I thought I knew EVERYTHING,
    NOW, the older I get the more I find out I don’t know!

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