Why can not I play a tapered extrusion (15 degrees) of this surface? the result is a solid which tends to a point, then incorrect.
(I could use the gumball to do this, but I would like to know why with the command “Extrude tapered” does not work?)
How thick of an extrusion are you aiming for here with a 15 degree draft? I find it works well at a 1 or -1 unit distance when using ExtrudeSrfTapered. At greater distance values the trimming step seems to fail with this trim border. I’m not sure if it’s a limitation of the command or a bug so I’ll file it regardless for development.