The pulsejet is based on the Lockwood-Hiller design, partly because that design used a 3″ pipe for the 180 bend in the middle of the engine. You can just buy that off Amazon.

Currently blocked by SkullRobo being a lazy fucker and wanting to get a proper rolling jig to make curved metal parts. Also, he can’t TIG weld for shit.

This guy made one out of “a Stainless Steel Ladle at Bed, Bath & Beyond. With 2 of these ladles, some 1″ Electrical Metal Tubing, some 1/2″ Electrical Metal Tubing (both purchased at a local ACE Hardware store) and a 3″ Exhaust Coupling (purchased at a local Checker Auto Parts)”