3D Printed Rocket Injector

3D printed swirl rocket engine injector. It’s powered by 91% isopropyl alcohol and pressurized air. I’m still working out the exact mixture and flow rates I want in order to optimize the burn. Printer settings: .4 mm nozzle .1 mm layer height 60 mm/s print speed 100% infill 105% flow (to help get a good seal) NO STL FILES, this thing is too simple and too dangerous. I don’t feel comfortable releasing files because it could easily hurt someone who isn’t careful. If you want to hear more about the design process, here is an instructable I wrote: