Ok, so I have searched CB and found many posts, but not one offers a definitive answer for exactly what I am looking for. I am looking to buy or build a confetti cannon that uses co2 cartridges. Its for personal use, and very on the cheap. Compressor is out of the question. Manual triggering, or very simple electronic switch triggering. I need 2 cannons for less than $80 total, not including expendables. Im sure that you guys will help me figure out a way to do it, safely. Feel free to PM me with any suggestions too.