TigerHawk & tbzep
I 3D printed my square micro rockets myself. I use printed nose cones in a few of the square kits. I have a variety of 3D printers. I really haven’t done any round 3D parts yet. I’m not sure my printers are good enough quality. The square 3D cones sand easily because of the flat sides. I’m planning on trying to print some round parts, just down the road a bit. ERockets have Prusa 3D printers both FDM and SLA type.

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Rick Randol
NAR #28062, ROCI Section #625
http://www.indyrockets.org
NewWay Space Models-We Cornered Model Rocketry