Anyone had this happen? I mixed a whole Weld-on kit & stuck the windshield on the 10. Had almost 1/2 pot of Weld-on left. I set it on the spar stub and dropped into a chair to look at plans. Behind me I heard a gunshot and turned around to find the Weld-on on the floor with smoke curling out of the jar. I gave it a spooky glance and set it upright. While going for my video thingy on my phone, it blew again. By the time I got the video going it was down to a little sizzle. That's a pretty peppy exotherm, don't ya think?