topic Re: -1 Dimension Needed in Inventor Forum

-1 Dimension Needed

MattK4VWA — Tue, 20 May 2025 08:06:39 GMT

Hey Inventor Team,

I am currently fixing a drawing made by one of my colleagues, and i have run into something strange.

see attached screenshot (Sorry i had to cross out the names of my files due to workplace).

the Drawing is requiring -1 Dimension Needed, usually an error of over constrained will occur, but i have never seen this before.

Just wondering if anyone else has run into this issue?

thanks team

Re: -1 Dimension Needed

kacper.suchomski — Tue, 20 May 2025 09:19:22 GMT

Please attach your file with sketch?

Re: -1 Dimension Needed

johnsonshiue — Tue, 20 May 2025 19:51:35 GMT

Hi! This usually means the sketch is corrupted or at least some parameters are corrupted. Try deleting the driven dimensions and see if the DOF hint becomes normal again. Or copy the sketch can paste it to a new sketch. Please share the file here. The forum experts can help take a look.

Many thanks!

Re: -1 Dimension Needed

MattK4VWA — Wed, 21 May 2025 09:31:25 GMT

Thank you,
I deleted all the previous driven dimensions and this fixed it.

I believe the sketch was corrupted as there were also a lot of overlapping arcs, which once deleted and redefined fixed this.