I got the power series transition aft tailcone with four fin slots, airframe tube, centering rings, phenolic motor mount, fin jigs, and the nosecone into Solidworks today. The nosecone quotes I'm getting to laser sinter it are $70 and it's hollow. Then another $147 for the aft transition with four aft fin slots. That's why you see a lot of "casting" ops in volume order kits, and because the 3d printing is slowest process. Granted its SLS Nylon 12 usually cheaper than their ABS offering which is accurate to 1/1000th of an inch. I screwed up my screenshot of the model and it is corrupted white or something odd, all my model .sldprt files are fine. Got home and its corrupted white, after four hours of modelling it. I'll try to get a picture of the assembly uploaded tomorrow or later this week. We are at a point of manufacture on iteration 1 prototype right now. Need to look into component masses for real.
For example a custom 29mm nosecone for a university bird was only $50 from them... Usually 4-7 days shipped to door. I left the aft transition on this rocket basically solid for structural integrity around that motor liner since its a fin mount too.
Right now I have a fin jig for the main fins which glue on MD style. Let me know if a fin tab setup is preferred. Thinkin' 3/32" fins G10 fiberglass sheet. Granted the SAAB 372 didn't exist in kit form for 54mm airframes, and doing it first time always $$.