BB Air Engine For Building Blocks

This model is designed to work with ‘building brick’ parts, turning a standard engine cylinder into a working air-powered engine. Once printed, you'll need to take these steps to get the engine working:Remove support materialFile/sand the parts of the valve housing and sealing cap that will touch each other to get rid of any excess support material. Check that the piston head travels smoothly into the cylinder. If there's any friction, gently sand the piston head.Insert the o-rings around the piston head (9mm), sealing cap (14mm), and into the bottom of the valve housing (8 mm) (3 o-rings total)Drill 2 exhaust ports into the ‘building brick’ engine cylinder, just below where the piston's o-ring travels at the bottom of the strokeSuperglue the valve housing to the top of the engine cylinderInsert an airsoft 6mm ball bearing into the valve housingUse two M3 bolts to secure the sealing cap to the valve housingConnect some 2mm (inner diameter) pneumatic hosing from the valve to