That instructibles method should work ok too . I ' d recommend that instead of using the tube and metal washers , to make larger wood blocks that do the same thing . You ' ll need a washer on the top of the block for the bolt to butt up against , but a wood block can be made larger to spread the pressure out over a greater area of the body . And you can sand the edges of the block so there ' s no sharp corners to dig into the body . All the companies I ' ve worked for have little jigs similar to that to remove string ferrules . ABM makes 12 saddle bridges , but they ' re over $ 100 each . But the locking saddles on the Duesenberg are a huge improvement . I used to work in the Jackson custom shop , and we used bridges from a company called Merlin 5 . They had 12 saddles on screws like a standard tuneomatic , but with that design you ' ll get vibration between saddles because they ' re tall , narrow , topheavy , and pivot on the screw . I ' m definitely gonna pick up one of those the next few months for a new build . I ' m gonna do a 12 string with the octave tuners behind the bridge like the BC Rich Bich 10 string , so I need a tune o matic style rather than the hardtail Strat style . I haven ' t been able to find a good bridge until you posted this .