How to combine two paths in Illustrator
Is it possible to combine an open path and a closed path in Illustrator?
I want to take these two paths:
And combine them to make a box like this, except I don't want the points of the diamond-shaped path to extend past the left and right side of the other path:
No. It's not possible. Each anchor point in Illustrator can only contain and in and out path. You can not have 3 paths using the same anchor point.
You could expand the strokes and then combine shapes, but you can't combine strokes.
A better method would be to draw the outer shape as one path, then inner paths separately rather than trying to combine paths to create the outer shape....