Compressed Air Engine

grabcad

Please use this product at your own risk and always wear eye and ear protection. Do not pressurize the engine without conducting safe pressure tests, as 3D print quality may vary, potentially compromising the bottle cap/cylinder head's ability to handle high pressures. Watch the build video for guidance (https://www.youtube.com/watch?v=YLPY8CY5Fm4). Look forward to updates on the lid-mounted cylinder head. Print settings include a nozzle diameter of 0.2mm, print width of 0.25mm, layer height of 0.1mm, six top/bottom layers, six outer walls, and 50% infill using rectilinear infill type. The material is PLA, with a print speed of 50mm/s, nozzle temperature of 220°C, and bed temperature of 40°C. Note that these settings are specific to the print, while others may be adjusted based on personal printer and filament preferences. Several parts require support during printing: the crankcase, cylinder, and piston. Hardware needed includes six M2x10 bolts, one M2x20 bolt, one M3x25 bolt, six 0.5mm thick rubber sheet, a 2.5mm thick rubber sheet, a 6mm BB pellet, a brass tube with ID 2mm and OD 3mm (6mm length), a PVC clear tube with ID 4mm and OD 6mm, a 1pc rubber O-ring with an outer diameter of 8mm and cross-section of 2mm, a plastic bottle, a Presta valve for tubeless tires, six pneumatic fittings, a propeller with at least an 8-inch diameter, CA glue (superglue), silicone spray lubricant (such as WD40 with a yellow cap), 1200 grit wet/dry sandpaper, scissors, a vice or clamp, 1.5mm and 2mm hex drivers, and a drill with a 6mm drill bit.