topic Blue object lines in Assembly in 3D Part & Assembly Design

Blue object lines in Assembly

kleipold — Tue, 24 Feb 2026 20:41:02 GMT

I have a small class project. A number of students have bright blue lines shown on parts, but I do not. We're all in Creo +. The lines don't appear in the part view, just the assembly. They aren't visible sketches, and I've tried hiding all the different layers and I can't make them go away.

What am I missing?

Re: Blue object lines in Assembly

kdirth — Wed, 25 Feb 2026 13:14:03 GMT

Looks like copied edges. Can you show the model tree so that we can see what types of objects there are.

I would ask for the model, but you are most likely using a student version which most of us can not open.

Re: Blue object lines in Assembly

ArnoldCollett — Wed, 25 Feb 2026 14:48:17 GMT

They could be from the internal sketches used in the part features. There may be a config option that isn't set to hide internal sketches. You could create a layer and add them to it.

Re: Blue object lines in Assembly

kleipold — Fri, 27 Feb 2026 21:00:38 GMT

Nothing really odd about it - but when I opened it today - everything looked normal. I'm not sure what changed. I'll ask the class if they are still seeing similar issues.