Once the inside of the body has been sanded smooth, the tailblock is carved so that there are no sharp corners, and then the kerfed lining is glued in place along the inside, top edge of the body.  The kerfed lining is a triangular strip of wood with cuts made all along its length about every quarter of an inch.  The cuts allow the lining to be bent very easily by hand, and you don’t need to use a hot bending iron.  The linings are glued in a little proud of the top edge of the body and held in place with spring clamps.

After the glue has dried, sand the top edge of the body and kerfed linings perfectly flat by rubbing the body, with the edge down, on a flat plate covered with 80 grit sandpaper.