The helix shapes are created using a screw modifier. Everything looks good in the 3d view (with render preview on)

enter image description here

but when I actually hit render.. the helix shape is not rounded, and has a funny hard edge look.enter image description here


If you're using a subdivision surface modifier for the helix, keep in mind the modifier has different levels for previews and renders as seen here:

image of subdivision surface modifier

this may explain why your helix has a funny look when you render it

  • $\begingroup$ Thanks, I thought of that and no, I'm not using a subsurface MOD. it's just a circle that has a screw modifier added. $\endgroup$ – L. Penwell Dec 16 '18 at 20:10

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