I got some filament yesterday from Amazon. I can't believe I got a package on Easter Sunday; the USPS label indicates Sunday delivery! I will PM you my details, I would like to try to print the Estes Titan nose cone you rendered.

For cutting fins and centering rings I was also looking at getting a DIY CNC Router Kit like: https://www.amazon.com/Control-Engr...YKAWS86XK2F3PWK

I didn't go this route because I want to cut all three or four fins (or centering rings) out of a stack of wood, all at the same time, so they are all exactly the same size. It is not clear to me if the CNC router like these can handle a 1" thick stack of birch ply. I may purchase a CNC router in the future after some more research. It seems to me that router bits are currently much cheaper than laser tubes, which is why I didn't even consider a laser cutter. Also it seems both of these cutters require a dedicated computer unlike a 3D printer.

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Bruce S. Levison, NAR #69055