JB Weld acceptable for Wood/Glass adhesion? 2x72 DIY Belt Grinder upgrade.

F

Faralon

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Nov 14, 2013
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I built a 2x72 grinder off of plans purchased from John Heisz. It has been working great, however the oak platen has dished out where the tool rest and the majority of the grinding happens.

With that, I purchased a glass platen to "upgrade" the grinder. I have both 2 part and JB Weld. Plan was to drill some 1/8" recesses, sand to 60 grit, apply glass with JB Weld.

I will have a ledge at the bottom for the glass to rest upon.

Any real difference on 2 part vs JB Weld as far as adhesion goes. My "Guess" was that the JB Weld might hold up to heat better than the two part.

Thoughts?

Thanks!
 
I think JB weld has a "high temp" version of their epoxy as well. I know they have a high temp putty for sure, but I wouldn't use that for a glass platen. At any rate, most guys just use regular JB Weld as far as I know. Personally, I use double sided carpet tape, and have never had an issue. That's after getting the back of my platen hot enough to be uncomfortable to touch.

The main thing is that you have some sort of a "ledge" or "lip" to keep the glass from sliding down, should the epoxy every fail for whatever reason.
 
JB may be your best bet, but be aware you have two totally different materials together. Wood will expand/contract much differently than glass and you are going to apply heat to make matters worse. My guess is it wont work well, but I have no other suggestions. One thought would be to obtain a steel platen to screw to the wood, then the glass to the steel.
Good luck.
 
I haven't had any problems with My JB weld in a year and looks as fresh as the day it went on.
~billyO
 
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