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Toughen heat resistance adhesive.

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Windy12/08/2011 22:51:30
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910 forum posts
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I run a flash steam hydroplane and the hull is made of mainly 1/32 marine ply for lightness.
It is glued with 2 part epoxy and at times when things get a bit out of hand the heat softens the epoxy and causes joint failure sometimes with disasterous results.
There are toughen epoxy adhesives that I used to use in the car body repair trade but the one that was used would still soften with heat.
A friend once gave me a cataloque with some industrial epoxy that would probably do but they are no longer trading.
The sort of heat causes the plywood etc to char.
This nomally only happens if excess fuel is pumped to the burners if there is drive or prop failure.
I require an adhesive to bond wood and metal, to be flexable and withstand heat that chars wood.
Any suggestion of suitable glues that you can buy in a small quantity would be welcome
 
Windy
Bill Pudney13/08/2011 02:22:12
622 forum posts
24 photos
"J B Weld" might do the trick. Its intended for metal to metal, and is rated up to something like 300 degrees. I've used it for sticking a bit of al. alloy to the balsa leading edge of a model aeroplane, where the balsa can get charred by the hot exhaust without the al. alloy. I've also used J B Weld to glue a diesel engine piston together (!!), it will be flown for the umpteenth time later today.
best of luck!!
cheers
Bill Pudney
Windy13/08/2011 06:25:22
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910 forum posts
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Thanks Bill for the suggestion as a reasonably easy product to buy it might do the job.
 
At the moment I have some JB weld as a seal on a new silencer I have just made and will see how that turns out after a few runs next month.
 
I have not tried it on wood yet but will do a few test pieces and see what happens when it gets hot.
 
Windy

Edited By Windy on 13/08/2011 06:47:31

mick H13/08/2011 08:07:06
795 forum posts
34 photos
Windy,
 
Just to be on the safe side, I thought I might mention that the J B Weld web site specifies heat resistance up to 500 degrees Fahrenheit.........which as you will know is 260 degrees Centigrade.

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