I 3D Printed a Water-Cooled Rocket Part 2

https://pcbway.com/g/O532RF Thanks to PCBWay for sponsoring this project. They offer professional manufacturing services including industrial 3D printing, CNC machining, PCB fabrication, injection molding, and more. I tried redesigning my 3D printed water-cooled rocket engine to see if I could stop it from melting. After reducing the chamber wall thickness and rethinking the cooling design, the PLA version performed much better than before but I wanted to see how far I could really push it. So I had the redesigned engine manufactured in high temperature PEEK and put it through the same tests. Did it finally survive? Watch to see how both versions performed, what failed, and what I'll improve next. If you have any ideas on how you'd improve the design, let me know in the comments! Want to build your own version? The STL files for this project are available here: https://ko-fi.com/mrmoregooder