Doesn't JB Weld have metallic powder in it? I don't think that would be a good idea around high current DC armature windings. Plain old 2-part epoxy is an insulator. I've seen JB Weld rust when used to patch engine block cracks.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!