>>3009278 >>3009289 >>3009292 finally got around to printing this, first attempt is 95% a failure. At least the fan passed the fit check. End of the day, the threads don't mate and they seem to be too close to the diameter/tolerance of the tube itself for them to even begin mating. I feel like there's a higher level process to "designing threads and picking thread diameters" that I don't know about.