Sunday, February 20, 2011

gotta make a bridge for Lyndsay

The Bridge blank.  It a piece of Brazilian Rosewood that is a tad over 6 inches long and a hair wider than one inch

Her I lay off the center line and mark off the position of the outside strings

This ruler marks off the string spacing on the bridge, which will be 2.25 inches, but it allows for a little more space between bass strings and a little less between treble strings.  The gaps between strings should be equal 

Belot you see the confusing array of lines, the center line, string spacing lines (where I will drill the bridge pin holes. and the limiting lines for the saddle slot, and finally the only lines that go all the way across the bridge showing the limits of the center section of what will be a pyramid bridge.


This metal milling machine is what I use to make the saddle slot.  There is a 1/8th bit in the chuck


In the holding vice I tip the bridge forward some so that the saddle slot is angled back a little.  (about 2 degrees)  This has several benefits, not the least of which is that the scale length is longer by a fraction the higher the string action.  Since high string action needs more compensaton, this automatically does the deed.

Some action shots of the slot being cut and other things on the bench next installment

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