Can't get Auto Smooth to work on extruded spiral This should be super simple but somehow I can't get it to work


Create a spiral
Give it some extra turns
convert to mesh
extrude a little on the x-axis (so it looks like a roll of paper)
tick auto smooth


But it still looks like this:


I've also tried the Smooth Modifier but no difference there either .... ?
To create the spiral enable the Add Curve: Extra Objects plugin.



Then do Add->Curve->Spirals



For a smooth curve, don't convert your spiral into a mesh, keep it as curve and extrude it on the geometry section:



To add thickness use a solidify modifier: