Heat Disassembly Technique

[Peter in Fairfax, VA]

While the "figure 9" technique for disassembly is well known, as is sawing, heat also works well for many adhesives.  Epoxy, Titebond and the like easily give way to a heated blade.  A propane or MAPP torch and a metal putty knife or utility knife get the job done.

Safety measures include doing this outdoors, remaining upwind of the smoke, using an oven glove or rag to avoid burning your hand, and choosing a knife that is not easily melted, e.g. plastic handles need not apply.

Results include removing doublers and maple bearers from profile fuselages, removing stabs and complete disassemblies.  Thanks to Scott Richlen of Annandale, Virginia for running Winter shop sessions for NVCL members and providing instruction in this useful technique.

Photos attached.

Keep 'em flying,

Peter

[Scott Richlen]

Besides a putty knife, the #26 X-acto blade in a wooden handle also works very well.

As Peter pointed out: do this outside, never inside.  I'm sure one of the regulars on Stunt Hanger will identify the potentially harmful noxious gases that might be emitted in this process.

I was recently given a SIG Spad in bad shape and decided to rebuild it.  First step: get out the torch and the #26 blade!  The original builder had even gotten the trailing edge glued on incorrectly and a hot #26 blade did a great job of loosening the rib-to-trailing edge glue joiints so I could re-glue it in the correct position.  Good technique to have in your bag of tricks!  Just don't burn down your house!

Remember: outside.  And: keep your nose upwind!