What's new

Alibre is misbehaving


Alibre Super User
This happens pretty much when time when using reference geometry to place planes and it's been happening for years. I may have reported it in the past, can't remember. Don't recall others reporting this but I'm not really that active here anymore.

I have a part that requires a 3D curve for a swept cut. To achieve this I create a thin extrude feature that passes through the main feature. I also use a dimension from the thin extrude sketch to place the plane for the swept cut profile using the equation editor. In this case it is the dimension D8.

Screenshot 2024-03-15 172358.png

Screenshot 2024-03-15 172618.png

Screenshot 2024-03-15 172643.png

The problem: The D8 value is 4mm. However it was first 2.5mm, I then changed it to 4mm. Now, no matter what I do it won't change the value to 4mm. I can enter the 4mm value but as soon as I press 'ok' it reverts back to 2.5mm. The only remedy is to delete the plane and create a new one, but this voids the sketch.

Screenshot 2024-03-15 172729.png

Screenshot 2024-03-15 172857.png

The result is a swept cut that starts 1.5mm shy of where it should.

Screenshot 2024-03-15 172936.png

It's a problem. And as I say I've been seeing this for quite some time. Part added for testing.


  • 24901-10101-00.AD_PRT
    301 KB · Views: 6


Staff member

If a dimension won't accept a new value, it typically indicates it has become corrupted. In many cases, deleting the dimension altogether and substituting a replacement will resolve the issue.

Editing D8 in your file was no problem for me, and it moved the plane.