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Old 01-31-2013 | 07:27 PM
  #32  
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sensei
 
Joined: Jul 2002
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From: SAN ANTONIO, TX
Default RE: Which glue


ORIGINAL: 33willys

As stated earlier I had to take something apart that was put together with 5 minute epoxy and it just snapped apart without taking any wood with it. Looks like the price of fast is weak. I think the 5 minute stuff didn't have time to soak into the wood. Worked great mixed with alcohol for fuel-proofing. Had to work fast! I have gone over the Elder 40 build threads and nobody mentioned that they were concerned with the tail feathers staying on. No mention of them falling off either. At any rate I did add a few braces to increase the glue area. If it's too heavy to get off the ground I'll just call it a next generation tank.
It snapped apart because 5 minute epoxy cures very hard and brittle, unlike a very slow curing epoxy glue or stuctural adhesive that cures very tough. That is why you should never use 5 minute epoxy for highly loaded bond lines, especially if subjected to high vibration while loaded.

Bob