Making a lowC extension for a double bass （低廉、扩展低音提琴,）.pdf

tRade secRets Makers reveal their special techniques Making a low-C extension for a double bass A guide to designing a custom-made extension for individual instruments By DaviD Briggs Luthier bAsed At robertson sons, ALbuquerque, new MexiCo, us The form of C exTension described here represents a This often meant cutting away large portions of the scroll and significant departure from earlier types of extension. Earlier pegbox to allow the extension to fit and function properly. C extensions were typically made of metal and mass-produced in The method described below shows how to fabricate a machine shops, where it was necessary to take a one-size-fits-all custom-made ebony extension for each individual double bass: approach to construction. These appliances were purchased by an extension that is much lighter and quieter, and less invasive shops that then needed to adapt them to the instrument at hand. to the instrument. 1 2 The extension is made from a piece of ebony After planing the ebony for the extension to a workable 2 thickness, I make the initial cut-out using the template as A cardboard template of t