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Published on Jun 18, 2009
Unless you have a farm or friends property to use an Orange gun on I suggest you don't build one because they are inappropriate and too dangerous for city use. The gun is made of PVC pipe, commonly used for plumbing in modern construction for drainpipes, sewerage, gutter downpipes and so on. It is a fairly cheap material although the gun uses parts that are uncommonly used so may not be widely available. There are 5 PVC parts the barrel which is straight pipe, the reducer, the T intersection and the 2 end caps. The T intersection pipe section must be of larger diameter than the barrel pipe section, this is so there is a large chamber for combustion. The reducer has two sizes at each end and these must match the sizes of the T intersection and the barrel to join the two together.