Machining a Two-Stroke Engine out of Aluminium

Recently [Camden Bowen] took a swing at machining a two-stroke engine out of billet aluminium , following adventures in 3D printing such an engine , as well as building one out of parts largely sourced from a hardware store . The sketchiest part here is probably the use of only a basic mill and lathe, making the milling of certain shapes a definite OSHA violation. Two-stroke internal combustion engines are pretty simple from a mechanical point of view, with designs readily available.