In this design, the last sketch (sketch 4) on the upper snout http://a360.co/2Eu0Z5f I created a plane off of the circuit board of the PIR sensor. I wanted to extrude two mounting posts from that plane to the body in front of the snout. I was able to project the mounting holes of the circuit board then make center point circles to make up the post then extrude. When it extruded, the sides of the mounting post were clipped. When I went back to the sketch, I saw that at some point in time, after I closed the sketch, all of the geometry from the circuit board got automatically projected on to that sketch plane and was causing problems. I deleted the two problem vertices so I could move forward, but I see this often where a bunch of unwanted geometry gets projected from another part and I have a bunch of purple artifacts on my sketch.
The other thing that is odd, I think that the same geometry is projected two or three times. I have to select it multiple times and hit delete or I have to lasso the projected geometry and delete it.
What am I doing wrong ?? I turned off auto project geometry and auto project edges in my preferences but it still does it.
I would capture a video but this happens after I stop the sketch and I come back to it later and it just happens to be there.
Thank you
John Gentiin
