Summary

I used the customizable rocket nozzle generator by waterside to generate a convergence divergence nozzle to work with a black powder rocket engine. I printed the engine in PLA, and despite its low melting temperature, the motor held up very well and has no damage. The integrity is in tact after firing it and I would consider it re-usable. The engine had a burn time of about five seconds and an estimated 20g of thrust.

Test video in slow motion.
https://youtu.be/7Pn3RLUfRmc

Print Settings

Printer Brand:

Robo 3D

                                            <p class="detail-setting printer"><strong>Printer: </strong>                     <div><p>R1 ABS + PLA Model</p></div></p>                                                                                <p class="detail-setting rafts"><strong>Rafts: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting supports"><strong>Supports: </strong>                     <div><p>No</p></div></p>                                                                                <p class="detail-setting resolution"><strong>Resolution: </strong>                     <div><p>0.3 mm</p></div></p>                                                                                <p class="detail-setting infill"><strong>Infill: </strong>                     <div><p>100%</p></div></p>                                                        <br>                        <p class="detail-setting notes"><strong>Notes: </strong>                    </p><div><p>No supports needed.</p></div>

PLA Rocket Engine