Rocket Nozzle - Fits inside 1in PVC pipe
thingiverse
This is a super simple rocket nozzle created with a 90 degree convergence angle and a 30 degree divergence angle made to fit 1in PVC pipe. The throat diameter is 6.6mm while the nozzle diameter is around 26.5mm, for an expansion ratio of 16. (Which is way to high, but you can drag the divergence side through the floor of your build plate to get an optimal expansion ratio for your pressure). Recommend printing with 100% infill due to instantly melting upon ignition, and running a test partial print (or several) to dial in the scaling as your printer may vary. Full disclosure I have not tested this, and have no idea if it will work. Enjoy!
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