Here is a quick tutorial on how to turn a mechanical pencil into a mini gun. Chronograph speed test: kinetic energy speed (m/s) speed (fps) Average 0.0847 J 22 m/s 72 fps Max 0.128 J 27 m/s 89 fps Don’t forget to check the 170 fps compressed air blowgun.
Hi everybody, I had a lot of request about selling laser ligthers… So after a small survey, the pre-orders are finally open.
Here is how to make colored smoke mix. In this video I show you how to make purple ones using rhodamine B. To produce color, the dye must be vaporized by the combustion heat and exit the reaction zone attached to the gasseous by-products where it will condense in air to re-form into solid dye […]
Here is how to make a powerful compressed air blow gun with a pen. Speed test (+-0.25% accuracy chronograph): – Average: 40 m/s = 131 fps = 89 mph – Max: 52 m/s = 170 fps = 116 mph Kinetic energy (0.3g bullet): – Average: 0.24 J – Max: 0.4 J