Grinding Out Old Glue
by Bob Violett

Propane torch heats slow turning PermaGrit Pancake tool

  The PermaGrit 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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