Here is a closeup of the fin surface. I haven't sanded anything yet, the pictures are as they came off the printer. I printed at a 0.1mm resolution and the surface is very smooth, you can barely feel any of the layering.

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Tim

"You know, it, uh, won't fly unless somebody pushes the button." From the movie October Sky.

I am SAM # 0167
NAR 98303 Southwestern Ohio Rocketry Association (SORA) #624
https://www.rocketryohio.com