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<TITLE>RE: [sdiy] Semi-OT: conductive glue?</TITLE>
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<P><FONT SIZE=2>At work here, we use "silver epoxy". At least that's what we call it. I don't know the brand name or any other details except that I've been told it conducts and can be worked just like epoxy.</FONT></P>
<P><FONT SIZE=2>John Speth</FONT>
<BR><FONT SIZE=2><A HREF="mailto:johns@molectron.com">mailto:johns@molectron.com</A> </FONT>
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<P><FONT SIZE=2>> I'm trying to repair a piezo pickup for a violin. For each string, </FONT>
<BR><FONT SIZE=2>> there are two small (about 3mm * 3mm) piezo slices between two pieces </FONT>
<BR><FONT SIZE=2>> of brass. One brass piece is pressed down by the string while the </FONT>
<BR><FONT SIZE=2>> other brass piece is mounted into the bridge. The string </FONT>
<BR><FONT SIZE=2>> itself is the </FONT>
<BR><FONT SIZE=2>> ground connection for the piezo pickup.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Normally this combo is fixed together, the brass glued or whatever to </FONT>
<BR><FONT SIZE=2>> the piezo, but now one of the "upper" brass pieces (the one </FONT>
<BR><FONT SIZE=2>> the string </FONT>
<BR><FONT SIZE=2>> rests on) has come off. Any idea how this was originally fixed, and </FONT>
<BR><FONT SIZE=2>> how I can attach it again? It doesn't look like it was soldered. The </FONT>
<BR><FONT SIZE=2>> piezo seems not to be solderable.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Since the brass pieces form the two contacts of the pickup, if some </FONT>
<BR><FONT SIZE=2>> sort of glue is used, it has to be conductive. Does such a </FONT>
<BR><FONT SIZE=2>> glue exist? </FONT>
<BR><FONT SIZE=2>> It doesn't need to conduct very good, because piezos are high </FONT>
<BR><FONT SIZE=2>> impedance. I already got that "repair conductive silver" stuff which </FONT>
<BR><FONT SIZE=2>> is used to repair broken traces on car rear window heaters, but </FONT>
<BR><FONT SIZE=2>> haven't tried yet. It looks and smells like fingernail polish so </FONT>
<BR><FONT SIZE=2>> probably it doesn't glue good enough.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Sorry for being OT, this is for a MIDI violin, so at least it's synth </FONT>
<BR><FONT SIZE=2>> related.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> Ingo</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
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