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Building Tips and technical articles. => 1/2 A building. => Topic started by: Larry Renger on September 02, 2012, 02:36:24 PM
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I have cut the beam mounts off the Lil Geo, and made a nice firewall for radial mount engines. I carefully glued it on with 12 min. epoxy. Yesterday, while Andy B. was ready to launch it, the engine and firwall took off! Fortunately, he was not in the way.
There is a light coating of epoxy on the back of the firewall and obviously epoxy in the fuselage wood, but NO shreds of wood separated from either side. The only thing I can think is that the very slow epoxy soaked WAY into the end grain wood of the fuselage, leaving almost none to provide a bond. HB~>
I will re-epoxy it, then drill through and epoxy dowels through the firewall and well into the fuselage. Between the main bond and the dowels, it should stay put!
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Hi Larry,
I only saw that happen years ago when Testors Fast cement was used. ;D
BIG Bear
RNMM/AMM
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Larry,
Happened to me once on an old glue joint, never on a new one though
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I will always double cement, I will always double cement, I will...
For the young'ns, one thin coat on each surface, one more coat and connect parts. I read that on an Ambroid tube after a couple of years of doing it wrong.
Never heard of that problem with epoxy though, thanks Larry.
George