Pass Depth
The maximum depth of cut the tool can cut. The Pass Depth controls the number of z level passes that are calculated for a toolpath. For example, creating a pocket 1" (25.4 mm) deep using a tool that has a Pass Depth of 0.25" (6.35 mm) will result in the toolpath making 4 passes.
Stepover
The distance the cutter moves over when doing area clearance cutting. For example, when raster machining the cutter will machine along the X axis, stepover in the Y direction and return parallel to the first line of cut. The greater the stepover the faster the job will be machined, but this must be balanced with the material being cut and the tooling being used, to ensure that the tool does not break. When stepovers greater than 50% of the cutter / tip diameter are used the software automatically adds 'Tail' moves in the corner regions of toolpaths to ensure material is not left on the job for offset based strategies.
When using V-Bit Tools, the Stepover fields automatically change to use the following
options.
Final Pass Stepover
The distance the cutter moves over when finish machining and is usually set to be a
relatively small distance to produce a smooth surface finish on the job.
Clearance Pass Stepover
Only used when a V-Bit tool is being used to rough machine at multiple Z levels down to a specified flat depth. This stepover can be much larger than the Final Pass Stepover because the tool is only rough machining material away. Increasing the Clearance Pass Stepover will reduce the machining time, but you must be careful to ensure it is not too great for the material being cut.