Use spine curves to create aSpine finishing toolpath.
Note: PartMaker uses Spine curves only if they are associated to a 4- or 5-axis simultaneous toolpath that uses the Spine finishing strategy.
When you select Spine Curve as the curve type, only the Distance from Face Origin setting is available on the Curve Properties dialog:
Distance From Face Origin — Enter the distance from the Face Origin at which PartMaker displays the 2D curve. The distance is measured in the direction that is perpendicular to the Face plane. This value must be the same for all curves in a Surface group. Therefore, if you change this value, PartMaker automatically updates all other curves in the group to use the same value.