Restoration of E. Sartory a Paris violin bow
Page 2, Restoration of the frog
The frog was in pieces. Both wings that hold the underslide had been broken off and reglued (with filler where several small pieces missing), and the underslide was bent and partially worn away at the thumb position. This frog was a good candidate for a cheval repair (replacing the ebony at the top of the frog as well as fitting a new underslide), but after discussing the repair with the owner, the decision was made to keep all parts of the frog original.
(Back to Page 1, Restoration of stick)
This was the starting point of the restoration on the frog. Both upper sides of the frog had been broken off and reglued (several times) in the past.
The first step was to realign and reglue the wings of ebony that had broken away. There were several small chips of missing ebony that were filled in with a filler made from ebony dust. The screws from the underslide were removed and the eyelet hole was bushed solid.
After straightening the underslide and resurfacing the trench where the it fits, the underslide
was glued in. The butt-end of the stick was used in the gluing process to ensure a correct fit of the frog to the stick. The stick was protected from the glue with a thin layer of tape, and once again, string was used as the method to apply clamping pressure.
Once the glue had thoroughly dried, the frog was removed from the stick, and the excess glue was filed away. The upper edges of the wings and underslide were worked down to match the width and profile of the stick. A new eyelet hole was drilled, and the screws securing the underslide were replaced.
The restored frog refitted to the restored stick.
These two pictures show the completed restoration.
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