A single piece of pre-cut vellum for gluing on the bridge under the E or A string.
The vellum needs to be glued to the bridge over the string groove. For best results ensure the bridge is clean and free of grease or old rosin. Superglue is recommended. Fitting should ideally be undertaken by a suitably qualified workman.
4 out of 6 found the following review helpful
Pros: I found my A string was cutting into the bridge so used a little epoxy resin to raise the seat of the slot, redressed the slot to a slightly greater width to account for the additional vellum material, stuck one side of the vellum to the bridge with super glue, bent the vellum over and used an edge to push vellum into the slot to profile a groove. Fitted A string and tuned up so everything was under working load, then carefully stuck the other side of vellum to bridge. Dead easy.
Cons: No complaints, although a little pricey for what it was.