Dr. Howell- Now that's an experiment I could get behind! Kinda reminds me of some stupid things I did in my youth, which wasn't too long ago! A friend and I would 'experimenting' with various types of gunpowder, PVC, bolts, and a torque wrench! It's a good thing we had lots of fuse!!! [Linked Image] We stopped when one of the bolts used to plug the ends of the PVC completely went through a tree that we were standing by! I'm suprised we never got arrested.