Trim a toolpath

Fusion Manufacturing Extension

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

Note: When trimming, use the orthographic view. Right-click the ViewCube and select Orthographic.

  1. In the Browser, select the toolpath you want to trim.

  2. On the Manufacture workspace toolbar, click Milling > Modify > Trim. The Trim dialog appears.

  3. In the Trim dialog, select a Trim Type option:

    • Polygon: Lets you place three or more points to create a polygon that covers an area of a toolpath.
    • Plane: Lets you specify a plane to cover an area of a toolpath.
    • Boundary: Lets you select a closed contour on the model to use as a boundary and contain an area of a toolpath.
    Note: Planes and boundaries are associative to the model, meaning they can be regenerated if changes are made to the model.

  4. Select a Keep option:

    • Outside: Keeps the part of the toolpath that is outside the polygon or boundary.
    • Inside: Keeps the part of the toolpath that is inside the polygon or boundary.
    • Both: Keeps both parts of the toolpath, resulting in two separate toolpaths.
    Note: If you select a plane for the Trim Type, the options are to keep Side 1 or Side 2 of the toolpath instead of Outside and Inside. The toolpath that gets trimmed is highlighted in red.

  5. (Optional) To add notes as an aid to later recall why you were performing the modification, type some text in the Notes box. The notes appear when you place the pointer over the modification in the timeline.

  6. Click OK.

Trim by polygon - The basics

Watch this video to view the very basics of how to trim a toolpath using a simple example.

Length: 02:55

Trim by boundary or plane - The basics

Watch this video to view how to trim a toolpath using a plane or boundary using a simple example.

Length: 02:35

Examples - Inside or Outside options

Watch this video to view how you can use toolpath trimming to reduce machining time and toolpath programming time.

Length: 06:31

To watch an example on how to use toolpath trimming to combine two different strategies to machine a complex area on a part, watch this video on our Autodesk Fusion YouTube channel.

Examples - Keep Both option

Watch this video to view how to split a toolpath, then reorder the resulting toolpaths so that top areas are machined before bottom areas on a part. Also view how to split a toolpath and then use the Change Tool modification on it.

Length: 3:34

Parent page: Toolpath trimming