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<DIV><FONT face=Arial size=2>You can solder to aluminum with regular solder. The
problem is an oxide lay forms very quicky on aluminum. If you mechanically rub
the solder blob with the soldering iron through the blob to scrape away the
oxide layer while it is immersed in solder it will work fine. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Try it on a beverage can. Don't forget to empty it
first!</FONT></DIV>
<DIV> </DIV>
<DIV>John Ferrell <BR><A
href="http://DixieNC.US">http://DixieNC.US</A><BR></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=bob@toprudder.com href="mailto:bob@toprudder.com">Bob Richards</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=nsrca-discussion@lists.nsrca.org
href="mailto:nsrca-discussion@lists.nsrca.org">NSRCA Mailing List</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Sunday, April 30, 2006 8:36
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [NSRCA-discussion] Robart
air can leak</DIV>
<DIV><BR></DIV>
<DIV>Instead of just applying the solder over the hole, try cutting a small
patch out of a soda can and lap-solder that over the hole. Of course, you need
the special aluminum solder, called "alum-alloy" or something like
that.</DIV>
<DIV> </DIV>
<DIV>Make sure the tank is vented while soldering.</DIV>
<DIV> </DIV>
<DIV>Bob R.</DIV>
<DIV><BR><BR><B><I>Ken Thompson <<A
href="mailto:mrandmrst@comcast.net">mrandmrst@comcast.net</A>></I></B>
wrote:</DIV>
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<DIV><FONT face=Arial size=2>
<DIV><FONT face=Arial size=2>Does anybody have any clue how I can repair a
pinhole leak in a Robart air cylinder?</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>For some reason there is a tiny leak in the
side of the can. Solder and silver solder won't hold
pressure. I thought about JB weld for aluminum, but I'm not sure that
will hold 80 to 100 PSI either.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Any hints would be helpful, TIA.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial
size=2>Ken</FONT></DIV></FONT></DIV>_______________________________________________<BR>NSRCA-discussion
mailing
list<BR>NSRCA-discussion@lists.nsrca.org<BR>http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</BLOCKQUOTE><BR>
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