topic Issue? Offset curves cannot properly identify internal profiles in Fusion Support Forum

Issue? Offset curves cannot properly identify internal profiles

NikosSprocket — Sun, 02 Aug 2026 20:53:00 GMT

When you offset a closed line like a spline and then draw a coincident line across the offset profile, Fusion does show the two new profiles divided by the coincident line.

Attached are the test drawing and some screenshots. I was able to repeat this issue everytime.

Re: Issue? Offset curves cannot properly identify internal profiles

jhackney1972 — Sun, 02 Aug 2026 22:46:15 GMT

You need to select Computer All, on the Utilities menu, or press Ctrl + B (Command + B) after you sketch the second coincident line and it will find the new profile every time.

Re: Issue? Offset curves cannot properly identify internal profiles

NikosSprocket — Mon, 03 Aug 2026 03:26:35 GMT

John, you are absolutely correct. When I reopened it, of course, all profiles were recognized, as Fusion did a full computation..

Thank you!

Nikos