Several years ago I was frustrated with the removing of old tubing from
a tracker bar, and as John Tuttle suggested in yesterdays MMD, I used
my heat gun to assist.  It worked wonderfully but, contrary to John's
posting, the heat gun _will_ melt the solder and you will remove tubing
_and_ nipples if not very careful.

I shelved the heat gun and returned to the old stand-by's of removing
tubing.

Dave Smith

 [ The melting temperature of solder varies widely depending upon the
 [ lead/tin alloy ratio.  Scrape a little solder from the old instrument
 [ and make a comparison test with a soldering iron.  -- Robbie