Useless Machine Project The Useless Machine simply has a switch that, when flipped, an arm comes out to shut it off. This project requires soldering, laser cutting, and 3D printing. Holder-Kicker-Bar-Rev-BDownload uselessmachinePLASTICPARTSDownload uselessmachineWOODPARTSDownload Useless-Machine-Assembly-instructions-June-2018Download Useless-Machine-Parts-list-BOMDownload