Lines snapping to unwated places in 3d modell

this has probably been up before, but i can’t seem to find a solution for it.
But im trying to draw/ trace a line on to a surface in the Right viewport. All i want is a possibility to draw a line and then keep it flat / 2 dimensional. But it connects to many different points in the model. I can however use set pt afterwards to get it flat. But might there be another way to do it? I hope this image below can explain my problems. Thank you
I only make sure i have Onsnap activated.

Hello - set ‘Planar’ in the status bar, and then use Project in the Osnaps if needed.

Does that help?


Thank you Pascal. It somehow worked. But I will try some other ways. Using SetPt has been a helpful tool as well-Helena