pic: twenty zera niner hub

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2009 drivetrain wheel hub render.

What platform did you render this in? If it’s Inventor, you might want to check the resolution settings, as you should be able to clean this up a lot. Solidworks has similar settings.

Poke around, there’s much to be learned from the rendering engines in each!

Unless you have already made these, I would recommend you put a fillet in there.