This instrument required a lower center seam repair near the saddle. After removing the broken saddle and opening the lower seams, the joint was cleaned and reglued with hot hide glue. A thin piece of plastic was slipped between the top and the block to prevent accidental adhesion during clamping, allowing the center seam to close perfectly flat before the top was reattached.
Center Seam Repair Steps
Remove the broken saddle: Carefully take out the damaged saddle to allow proper access to the lower center seam.
Open the lower seams and separate the top from the block: Gently release both lower bouts and the top from the lower block to gain full access to the joint.
Clean the center seam: Remove old glue and debris to ensure a clean bonding surface.
Work hot hide glue into the seam: Apply fresh hot hide glue thoroughly along the joint.
Insert a protective slip: Place a thin piece of plastic between the top and the lower block to prevent unintended glue adhesion during clamping.
Clamp the top flat using a mold: Use a mold to ensure the top returns to a perfectly flat and natural position.
Apply lateral clamping: Add side pressure to close the seam evenly along its length.
Allow to dry overnight: Remove the clamps and the protective plastic the following day.
Reattach the top to the block and ribs: Reglue the top to the lower block and ribs once the center seam is secure.
Seal the exposed crack area: Lightly seal the repaired area to protect it from dirt and environmental exposure.
Fit a new saddle: Install a properly fitted saddle, leaving a slight clearance on each side to allow for seasonal wood movement.
