[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air ... build exceptional is the valve. [Ben] created a piston valve for this cannon that can be built with parts sourced from ...

[Michael Scarito] talks about the concepts behind radar, and then goes on to show that it’s not too hard or expensive to build a setup of your own. We’ve embedded his 45 minute talk after the ...