Re: Weller WTCP-N problem: No Heat

From: Jim Adney (jadney_at_vwtype3.org)
Date: 08/22/04

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    Date: Sat, 21 Aug 2004 21:51:16 -0500

    On Sat, 21 Aug 2004 04:49:04 GMT Isaac Wingfield <isw@witzend.com>
    wrote:

    >Crocus cloth is explicitly recommended for cleaning motor commutators,
    >so it should be fine -- actually, it's *very* fine 8^}

    Yes, I agree, it's very fine. As long as it doesn't leave anything
    behind it should be fine.

    >Some abrasives are insulators, and some are conductors; carborundum is a
    >conductor, for example. If I need a bit more "aggression" than crocus
    >cloth provides, I use a 600 grit carborundum "wet or dry" paper; the
    >grit is very solidly attached. A file, even a fine one, will remove a
    >lot more material than an abrasive.

    I really don't think carborundum is a conductor. Can you find support
    for this statement anywhere?

    I agree about the file. A more proper tool would be a burnisher.
    Contact burnishers just look like a thin flexible steel leaf with a
    matte finish which is very slightly abrasive. They're sold for this
    purpose, but I don't know if you can still buy them anywhere. I hear
    they were fairly common in the old days when IBM accounting machines
    consisted of banks of relays which were actually expected to be
    serviced.

    -
    -----------------------------------------------
        Jim Adney jadney@vwtype3.org
               Madison, WI 53711 USA
    -----------------------------------------------

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