Bad surface finish on nearly vertical walls. If you are finishing across a nearly vertical surface, portions of a surface have larger scallops than other parts of the surface. Possible solutions include:
Use
Scallop stepover instead of fixed planar distance stepovers. This gives a constant scallop height over surfaces of the model. See item 3 below.
Finishing the surface in another direction with a projection technique. Finish going up the steep slope rather than across. Use a stock curve if you want to only mill a small portion of the surface milling feature.
Finishing the surface again with the same technique using a much smaller stepover value. The
Stepover is the distance between toolpath center lines. This distance is measured in the XY plane and then the toolpaths are projected onto the surfaces of your feature. This attribute does not apply if
Scallop height is enabled.
The toolpaths extend beyond the Edge of the surface. If a projection milling toolpath extends beyond the edge of the desired surfaces, it can be due to the projection of the surface. You should check and possibly modify your projection guide surface.
Bad finishing of vertical walls. Projection techniques do not finish vertical walls. Finish vertical walls with
Isoline or
Z level finishing.