Anyone know of an easy way to generate a spiral toolpath to machine a smooth (upwards pointing) cone please? Trying to do it the obvious way (3D model > .stl file > CAM > G-code) isn't cool as the polygons in the .stl seem to result in lots of G01 instructions rather than cutting it in arcs/helical sections. If all else fails I'll have to write a spreadsheet to do it, but I fancy it could be a bit of a ball-ache.