Grinding Out Old Glue
by Bob Violett
Propane torch heats slow
turning PermaGrit Pancake tool
Pancake rotary tool (#RF-4C) is particularly handy
for grinding old glue off the inside surfaces of a
fiberglass part. Some glues like Zap-a-Goo that
have a rubbery consistency will clog the grit of the
Pancake tool almost instantly.
We found that keeping the Pancake tool hot with a Propane torch makes the
task very easy. A final cleaning of the PermaGrit
tool is accomplished by scrubbing it with a wire brush
while it is hot. Quick cooling in water is OK.
Of course, use all of the common sense precautions when
the torch is lit.
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