It sure is an ugly duckling but we’re impressed with it’s performance. The air tank is an old spent fire extinguisher. The stock valve was removed and the insides were cleaned out. Out of ...

On June 4, 2004, Marvin Heemeyer, a welder and former Air Force serviceman, unleashed chaos on Granby, Colorado, with a DIY tank. His creation—a heavily armored, modified Komatsu bulldozer ...

With the increased pressure, the O2 can be added to a SCUBA tank that contains high pressure air to create what’s known as NITROX. The idea is to increase the percentage of Oxygen in order to ...