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Author Archives: Kari Azure

Repairing a Broken Bow with a Headspline

A headspline is a common way to repair a bow that has been irreversibly broken at the tip. Once the bow is glued back together, a piece of pernambuco is inserted crossgrain to help support the glue joint from coming apart. Tools and Materials Thin Cyanoacrylate Adhesive Toothpick sharpened into a paddle Mini straightedge Lathe […]

Cheval

A cheval is a form of wood replacement. Often, due to a bow frog’s small size, an entire section of wood has to be replaced with new wood to reinforce the structure and to supplement missing wood. Traditionally, a cheval is performed by planing away original material and replacing it with new wood. A rounded cheval maximizes the surface area […]

Fill Stick at Thumb Projection with Optical Epoxy

Often, a musician will wear a divot in the bow where the thumb contacts the stick. The use of the optical epoxy to fill the worn area is a noninvasive and reversible restoration and looks good as well. MATERIALS AND TOOLS -good-quality, non-stretching transparent packing tape – modelling clay or candle wax – 1 dental dappen dish – […]

Conical Through Patch, Edge, and Underlay: C-Bout

This viola came in with some serious damage to the treble c-bout edge due to the bow hitting it. The purpose of the conical patch is to use the existing wood and raising it into a position that is past the damage so that the joint is almost invisible. In this case in particular, there […]