I just made a POP/sand forge with a 20lb canister, boy is that heavy! (Yes a You Tube Follower, or was,) I was searching to see how long i need to let it dry before I use it, and then Voila, I found this site. xxxx. I just wasted $20. Question #1. Is it safe to use. #2. I only have a couple of things that need to be bent, can I still use it for those projects? #3. Is there something else that I can put in the canister, (once I dig out the plaster), to do very light metal moving / Bending?