is this just an optical issue ? or is it something i have to take care of ?
regards
looks like a visual thing to me.
you could duplicate those edges to make curves and double check.
Hello - yeah, the settings in the image are for a very coarse mesh - but that is where to make the changes.
See
https://wiki.mcneel.com/rhino/meshfaq
Note unjoined edges will generally always show some discrepancy if you zoom in enough.
-Pascal
ok thanks for explaining Pascal
his max angle is set extremely high i think, try 1 or 5