Dry ice to make CO2?

[flamerz14]

hmm..yes i'll be building a burst disk canon for this.would copper suffice for this?i can get or make a sleeving so i don't get a frostbite holdin the canon while it charges..

[pat123]

My first cannon i ever made was dry ice. I made it in the shape of a basic combustion I stuck a potato in one end and unscrewed the cap on the back i filled a coke bottle with water and a little piece of dry ice and put it in the chamber after about 20 seconds the gun exploded shards of it went every where one hit my leg and I still have a scar. one piece left a 3 inch deep hole in my garage.

[flamerz14]

o.o pat you used pvc right?im ot risking myself with that..