Work with machining undercuts

Fusion Manufacturing Extension

This feature is part of an extension. Extensions are a flexible way to access additional capabilities in Fusion. Learn more.

Machining undercuts with 3-axis motion

  1. On the Manufacture workspace toolbar, click Milling > 3D > Steep and Shallow steep and shallow icon.

    The Steep and Shallow dialog opens.

  2. Complete the necessary steps of selecting a tool, defining any machining boundaries, and setting the heights.

    Tip: Lollipop, disc, barrel, or dovetail cutters are best suited for 3-axis undercut machining.

  3. On the Passes tab, set the Threshold Angle to 0 degrees. When the threshold angle is set to 0 degrees, in the Steep Passes group, the Machine Undercuts checkbox appears.

  4. In the Steep Passes group, click the Machine Undercuts checkbox.

  5. Type the Stepdown value.

  6. Click OK.

Watch this video to view an example of machining undercuts with a 3-axis toolpath.

Machining undercuts with 5-axis motion

  1. On the Manufacture workspace toolbar, click Milling > 3D > Steep and Shallow steep and shallow icon.

    The Steep and Shallow dialog opens.

  2. Complete the necessary steps of selecting a tool, defining any machining boundaries, and setting the heights.

    Tip: Ball-nosed tools are best suited for 5-axis undercut machining.

  3. On the Passes tab, set the Threshold Angle to 0 degrees. When the threshold angle is set to 0 degrees, in the Steep Passes group, the Machine Undercuts checkbox appears.

  4. In the Steep Passes group, click the Machine Undercuts checkbox.

  5. Type the Stepdown value.

  6. On the Multi-Axis tab, from the Primary Mode drop-down menu, select a nonvertical option.

  7. Click OK.

Watch this video to view an example of machining undercuts with a 5-axis toolpath.

Parent page: Machining undercuts