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:

Repairing Broken Bows Near the Frog: Step-by-Step Guide

Repairing an Inexpensive Bow with Breaks Near the Frog

This bow had multiple breaks near the frog, requiring a secure repair to restore its function. Below are the basic steps I followed:

  1. Clean the Crack: Remove any dust or debris from the cracked area to ensure a strong bond.
  2. Apply Glue: Work glue thoroughly into the crack, making sure it penetrates deeply.
  3. Protect the Screw: Cover the bow screw to prevent any glue from interfering with its movement.
  4. Tightly Wrap the Bow: Secure the broken area by wrapping it snugly.
  5. Wrap with Monofilament Line: Use clear monofilament line for additional reinforcement, ensuring a tight and even wrap.
  6. Secure the Ends: Overwrap both ends of the monofilament to hold everything firmly in place.
  7. Apply Glue to the Wrapping: Work a small amount of glue into the wrapping to strengthen the bond.
  8. Slide the Wrap into Position: Ensure the wrapping is properly aligned, allowing the frog to slide back fully.
  9. Check Clearance: Confirm that the frog can move freely and that there is a small gap between the wrapping and the end of the bow.
  10. Pull the Ends Tight: Pull both ends of the monofilament wrap as tightly as possible to maximize compression and support.
  11. Trim the Ends: Carefully cut the excess monofilament for a clean finish.
  12. Rehair the Bow: Once the repair is set, proceed with rehairing to restore full functionality.

This method reinforces the break while allowing the bow to ;function as intended, extending its usability.

 

IMG 20250211 170047 337

IMG 20250211 170047 337

IMG 20250211 170047 337
IMG 20250213 134938 177

IMG 20250213 134938 177

IMG 20250213 134938 177
IMG 20250213 135951 068

IMG 20250213 135951 068

IMG 20250213 135951 068
IMG 20250213 142029 345

IMG 20250213 142029 345

IMG 20250213 142029 345

 

Repairing a Bow with Breaks Near the Frog Mortise

This bow had a couple of significant breaks near the frog mortise. While I don’t have pictures of the clamping process, here’s the complete step-by-step repair method I used:

  1. Clean the Cracks: Carefully remove any debris or old glue from the cracks to ensure a strong bond.
  2. Protect the Screw: Apply Vaseline to the bow screw and wrap it in a single layer of plastic wrap to prevent glue from sticking to it.
  3. Apply Glue: Work glue thoroughly into both cracks, making sure it penetrates deeply.
  4. Insert the Screw: Reinsert the screw (without the frog) to help maintain alignment during the repair.
  5. Wrap the Bow with Thread: Tightly wrap the broken section of the stick with thread to reinforce the cracks and hold everything securely in place.
  6. Ensure Proper Alignment: Double-check that the cracks are perfectly lined up before the glue sets.
  7. Check Screw Rotation: Make sure the bow screw can still rotate freely and hasn’t been glued in place.
  8. Clamp if Necessary: If the cracks require extra pressure, use clamps in addition to the thread wrapping.
  9. Remove Excess Glue: Clean up any glue squeeze-out before it dries to keep the repair area neat.
  10. Polish the Repair: Lightly polish the area to blend the repair with the rest of the stick.
  11. Apply a Clear Wrap: Use a layer of clear wrap at the end of the stick to ensure the frog can still move all the way back into the mortise.
  12. Secure the Thread Wrapping: This wrap does not use knots. Instead, both ends are over-wrapped and pulled tight to hold everything in place.

 

IMG 20250102 100252 968

IMG 20250102 100252 968

IMG 20250102 100252 968
IMG 20250102 100353 458

IMG 20250102 100353 458

IMG 20250102 100353 458
 
IMG 20250103 114231 875

IMG 20250103 114231 875

IMG 20250103 114231 875
IMG 20250103 114336 778

IMG 20250103 114336 778

IMG 20250103 114336 778
 

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