# How to use mesh as a reference object in Solidworks?

Suppose I want to design some device against a scanned 3D model like eyeglasses. I have imported STL model and drew a reference plane by three points of it.

I can sketch on this plane, but I can't see where plane intersects with an object. How to compute this?

Or I can only draw extra planes and lines?

In the following picture an intersection is visible, but it is only visible during plane definition stage. Once defined, plane becomes 100% transparent.

• Can you not use "Intersection curve" like normal? Iirc there is an option to use the exact mesh intersection or an approximation? It's in the drop-down under project entities – Jonathan R Swift Jan 2 at 15:51
• Aaaa, it worked thanks! – Dims Jan 2 at 16:13