I brought lab metal and i was hopeing to use it as a filler similar to builders bog, but the $hit is watery as and it takes to long to build up thickness. I'm trying to find something that i can used to fill large dents and the likes. And i don't wanna have to wait two days before i can coat over it. In another forum some body mentioned a two part epoxy filler that can go up to 750 degrees. any body know what it is