Here you can see it in action: https://youtu.be/9Cofmy4bZX4 Uh...didn't find a way to attach a package with .stl files. Here they are: https://drive.google.com/open?id=1hNs4ZOr_H-nXIlVeMiUy7iY9UJ5GkodB Made with Fusion 360. A toy car with double-acting 1-cylinder compressed air engine (like the steam locomotives have). Has steering, which even works. I call it "vapemobile" because of the remote shape). Apart from these printed parts, you'll need some extra ones to assemble it: * 623ZZ bearing (4x10mm, 3mm hole) (may poorly work without it) * Piece of 1.75mm filament * Rubber band * Thin plastic bag * 6mm silicon pipe (can be found in any aquarium shop) * 4mm pipe from intravenous dropper (or any that you could pull onto the syringe end) * Two 2ml syringes * 8mm piece of 4mm PTFE tube (optional) * Air balloon * Bolts: M3x6 x8, M3x8 x8, M3x10 x3, M3x12 x5, M3x14, M3x25, M3x50 * M3 washers x10 * M3 nuts x30