Remove Excess Gypsum from Patch

What happens here

With the cut-out drywall piece, place it face down (brown paper up). Using a utility knife or a putty knife, gently score the brown paper backing around the perimeter of the patch, about 1 to 2 inches in from the edge of the patch. The goal is to cut through the paper but not too deep into the gypsum. Then, carefully break off the excess gypsum board from around the scored edges, leaving only the paper backing attached to the central patch. The video demonstrates doing this by hand, breaking off the gypsum and peeling the paper back. If done correctly, you will have a drywall patch with a central gypsum core and a perimeter of paper backing. The video demonstrates one attempt where the paper tears, and then a successful attempt. The key is to avoid tearing the white paper on the face of the patch and to create a clean, thin paper edge.

Goal: Carefully remove the gypsum board from around the edges of the patch, leaving only the paper backing intact. This creates a feathered edge that blends seamlessly into the existing wall.