Lute Top Replacement: Making Cauls By WP-Admin FVL | Published 12. April 2013 | Full size is 1936 × 2592 pixels Lute Top Replacement: Cleaning Up the Inside Lute Top Replacement: After the Top was Glued Making Cauls This is a caul in the making. It is essential to have cauls matching the radius of a lute neck, because strong clamps will be needed to glue the top in the neck block area. This caul was later outfitted with a cork cover. Bookmark the permalink.