Maybe this is what you're trying to describe. You could draw the drawer box using a rectangular path, a section profile, and Follow Me. Then draw a "cutter" to intersect at the corners. Imagine you could saw out the lock rabbet with a coping saw blade. The cutter is the path the blade would follow. Then separate the sides into components through careful selection.
[image: 6mQ0_Screenshot-1_2_20189_07_25PM.png]
[image: Zu4I_Screenshot-1_3_20183_36_33AM.png]