For those who use these little cartridges, you know how quickly the price can add up. [steve] takes us through the process of adding a valve to a spent cartridge so it can be refilled.

12-GRAM CO2 POWERLETS - Compatible with most air rifles and air pistols SNUG FIT, SOLID SEAL - For reliable and consistent performance 5-COUNT BOX - Ideal for the air gun target sport enthusiast ...

They're incredibly simple, all of them act as a valve. Screw a CO2 canister on one end, screw the other onto your valve and either turn a knob or just press down and with a short blast of ...

The cap is where the magic happens. A tight seal and a small CO2 cartridge turn boring still water into something a little more exciting. You can screw the top on a water bottle Roam sells itself ...

Most of the parts can be picked up locally or through MoreBeer.com. CO2 cartridges are used to pressurize the bottle. To keep everything cool you can use a standard water cooler with a few simple ...