I took my own advice and bought the Flashforge Creator X 3D printer. It has two MK8 print heads, for printing two colors, and an aluminum plate. So far I like it. I’m using ABS plastic and so far have had no jams. I’ve replaces the Kapton(tm) build plate covering once so far. I beat it up after seven or eight builds. The initial instructions suggest a plate temperature of 90C. I’ve had better luck with parts sticking to the build plate at 110C.
My initial interest in 3D printing is to make model rocket nose cones with a capability of carrying small payloads. Getting a 3-D printer has given me a opportunity to develop some ideas. I’d like to have a nosecone that can carry small circuit board payload. The version described here does not have that capability, but it is a step toward that goal. It includes a shell of a nosecone. I’ve included some internal bulkheads, though I’m not sure they are needed. The nosecone needs to survive the launch pressures. The bulkheads will need to be reduced, but could be thickened, to carry a payload.