Hi Brian

Thanks for the reply but I can't seem to get this to work as you describe.

I think there may be a rendering issue here as it seems to be a bit hit and miss whether you see the correct lines or not.

Created a little video showing this -

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Also tried simply creating a triangle in a new design and revolving this round an axis and getting similar results and I wouldn't expect there to be any geometry issues here.


I'm not sure if this is just a coincidence but when I choose a height value of between 47 - 59 this is when I'm seeing most issues. Above or below that it seems to be more stable.