Spud gun for beginners?
Yeah, I agree. Ball valve pneumatics are definately the simplest to build and use and they are alot more fun (IMHO) because I hate pissing around with aresol or propane... compressed air or CO2 is much cleaner and to work with and its very portable (with a CO2 tank). I'm just biased tho cause I love pneumatics and other than mini combustion cannons which are pretty slick... they just dont really do it for me. Unless you go build a electronically controlled propane meter with stun gun and exhaust fans and the whole nine... pneumatics kick way more ass.