DAVID_T
           
                I tried the concrete in the egg method a time or two myself. These "Easter eggs" come cheap at Wal-Mart the day after. Easter, that is. Second hand stores, GoodWill, Dollar Tree, ect. I used fast setting mortar 'cause it is smoother (no gravel) and sets in about 8 minutes. This is available at any hardware store. Problem. It sets fast, which is good, but I could only mix a two egg batch at a time or it would just set up in the bowl. Also had trouble getting the "egg" off afterwards. I gave it up and just left the plastic on. A couple of impacts did the job for me. I dropped the whole idea after awhile due to the amount of production time per egg. I did figure out, during this phase, that if I filled only half the egg with quick setting hobby plaster (less than 5 minutes) put it back together and rolled it round and round in my hand, the plaster coated the inside surface and produced a hollow plaster egg!
                   What I want is a pick-up full of ammo fast and cheap enough to "let lay". Think about this. If you were to take a length of corrugated steel drain pipe, mounted in such away that it will rotate on an incline (with rotation and incline adjustable), you should be able to drop a pre-measured scoop of "stiff" morter in one end. As it rolls inside of and down the spiral groove, it will (should, might) set up in a spherical shape as fast as you can scoop it in. That is my theory anyway. An incline may not be needed.
                  Anyway, there you go.
                                                           
                                                                Todd
                                                     

Todd,


Cool Idea!! You should give it a try. I may if I ever find time.  Dave