Milling Passes in SculptPrint

When manufacturing a part on a mill, several passes are typically required to achieve the final product: first, a roughing pass to cut away the bulk of the unnecessary material, followed by more detailed finishing passes. Larger tools are used in the roughing pass so that a lot of material can be removed quickly.  Then smaller tools which take longer to remove the same amount of material can be used on the finished passes to incorporate detail and sculpt the specific shape of the part.

The image above shows the path of a roughing pass, as well as its starting and ending volumes. Below, a sequence of finishing passes sculpt out the final part (head) from the volume created in the roughing pass.

  

To further increase efficiency, SculptPrint allows users to create cross section passes for the roughing.  A cross section pass is much quicker than a typical pass because it’s movements are less specific to the part, making it more effective for removing material.

In a finishing pass, the tool’s movements are specific to the part, as shown below.

In a cross section roughing pass, the tool either moves in a raster or radial pattern, both of which are much easier and faster for the tool to cut.

Raster:                                                                 Radial:

  

Raster: A raster pattern moves the tool across only the x or y axis. This technique is most effective when cutting from block stock.

Radial: A radial pattern consists of concentric circles; the tool begins cutting large circles that get progressively smaller. This technique is ideal when cutting from cylinder stock.

SculptPrint’s features are designed as easy and efficient tools for creating the most effective tool paths.