I do get some emails about making slots in tune-o-matic bridge saddles. Most of the questions are whether or not they are needed and the rest are how do you make the slots in a brand new blank saddle.
Here is a cool article from the Stewart MacDonald website. Eric Cloeman takes you through it step by step and shows you how it’s done. I do this procedure basically the same way but do not have all the specific tools that Eric uses.
Check out the article and feelfree to hit me up if you have any questions!!