Here is a bone bridge saddle I cut for Glossop fiddle player Jamie Knowles. He ownes a lovely hand built acoustic guitar. After checking it over for intonation problems. I found the bridge had been set very slightly too far forward. Resulting in an unobtainable intonation. My solution was to cut a compensating bridge saddle from a piece of bleached bone. It needed to be oversized so that I could build in the correct amount of compensation..