Circular milling strategy

Circular is used for milling cylindrical holes and bosses. You can only select circular faces when using this toolpath. Heights and depths are determined from the selected face. Circular will ramp on and ramp off for each pass around the profile.

2D Circular toolpath on a hole and a boss

To speed up the geometry selection process, you can use the options in the Geometry tab to automatically select geometry with the same diameter, or to automatically select holes and bosses based on minimum and maximum diameter ranges.

When compared with the Bore toolpath, the Circular toolpath generally results in a smaller G-code file size, which is useful for older machine tools. Circular can also machine with more of the flute length of the tool, which provides longer tool-life.