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The Pencil Mill cycle (and Operation) is used to clean up material remaining from a previous (finishing) cycle, for example cusps left at the end of a Parallel Lace cycle and consists of a single pass along internal surface edges and intersections.
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You can select any number of surfaces for this cycle which will then detect all internal intersections and place a toolpath at that point. The order of machining should, where possible, try to link intersections together to form a continuous path. This will have the effect of keeping the tool down on the surface.
A "shortest path" between successive curves will be taken to reduce the length of non-cutting moves (see example).
As part of the data input for this cycle, you will be able to define containment boundaries. Any pencil curves outside the specified boundaries will be discarded and those that cross the boundaries will be trimmed to their edges.
The Cut Surface Creases parameter on the Advanced tab of the Pencil Mill cycle allows you to specify in more detail where the cycle should look for pencil curves. Check this box if you want the cycle to try and find pencil curves within an individual surface. If this feature is disabled there will be a performance improvement because only the edges of the surface are checked.
The Pencil Mill cycle only supports ballnose cutters.
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