Callier-Scollard Violins
Craig Scollard

50 E. Green St. Suite 142
Pasadena, CA 91105
(626) 795-2870

Mon, Tue, Wed 10:00-1:00.
Thu, Fri, Sat 2:00 to 5:00

Intercom Access Code, Press:
142 and then the CALL button:

Cello Top Crack and Edge Repair | Broken Edge Restoration and Crack Reinforcement

This cello came in with significant edge damage, likely from being blown over in a strong wind and landing on its edge. The edge was broken into multiple small pieces, and there was also a crack running through the top, although it was fortunately away from the soundpost. The repair involved piecing the edge back together, reinforcing the crack from the inside, and rebuilding the missing section where the damage was too severe to simply glue back. The goal was to bring the structure back together cleanly and make the area solid again while keeping the repair as unobtrusive as possible.

Cello Top Crack and Edge Repair Steps

  • Assess the damage: Assemble all the small shards to see what is missing and how everything fits back together.
  • Open the lower rib: Unglue the right lower rib to relieve tension and gain better access to the repair area.
  • Glue the main crack: Bring the crack back into alignment and glue it, using a bit of pressure to close it properly.
  • Install internal cleats: Place three cleats through the f-hole to reinforce the crack, allowing one day per cleat for proper curing.
  • Stabilize the edge: Use a very thin putty knife to help support and align the damaged edge while working.
  • Reassemble the edge pieces: Carefully glue the smaller edge fragments back into position.
  • Rebuild the missing section: In areas where the pieces were too small to reuse, create a mold and fill the section.
  • Shape the repair: Remove the mold and reshape the rebuilt section to match the original edge.
  • Glue the top seam: Reglue the top right seam once the structure is back in alignment.
  • Seal the crack: Apply a clear seal over the crack to protect the repair.
  • Touch up the varnish: Do a light varnish touch-up on the edge to blend the repaired area.
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This was a smaller student cello, so the goal was to make a solid, functional repair that would hold up over time. Repairs like this can keep an instrument in use for many more years. If this had been a higher-end cello, the approach would have been different, likely involving removing the top and rebuilding the edge using wood from the inside and out. That method can produce a cleaner result, but it is also much more time-consuming and expensive.


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