Well, after only about 10-12 cooks, it's holding up good. I was scrubbing the grate last night and bouncing the kettle around, so I'll take a look and see if I've weakened it at all.
It was only one tab on one leg, so not a lot of JB Weld. I have..hack..hack..haven't seeeenn any s-s-s-side effects twitch..twitch from using the, um, um, grill? yeah, the grill. Dang, why's my finger loose?
Seriously, those are good questions. You know the washer will work. Like I said, just a thought
"When fully cured, J-B Weld is non-toxic. However, we do not recommend consuming the product."
"Original J-B Weld can withstand a constant temperature of 500º F. The maximum temperature threshold is approximately 600º F for a short term (10 minutes). Refer to individual product packages for more temperature information."
And more importantly, "Yes, it is microwave safe."
http://www.jbweld.com/faqs/