sheath. Roughen up the attachment site with sandpaper, a utility knife, or a wood rasp. Using your tool of choice, carefully score the top 2 inches of the belt loop and the area inside the pencil markings on the sheath. 5 Apply glue to attachment sites. Coat the attachment sites with a fine layer of contact cement glue. Put the sheath aside and allow the glue to cure. When it feels dry to the touch, you are ready to proceed. Dampen the leather at the fold of the belt loop with a spray ...