Do you have an old classical guitar where the action is too high? Have you shaved down the saddle as much as you can and found that the tone of the guitar is different? Or have you not been able to shave enough off of the saddle to adjust the action to a comfortable height? This is leading you in the direction of thinking about sanding down the bridge to make the saddle even smaller. I have been there done that.
I got to the point with my Sada Yairi Soloist where I had no break angle at all left at the saddle. This really affected the tone. The strings were way too loose and I could not play anything near the bridge with any snap at all. I was not willing to give up on this guitar as the spruce top on this guitar is amazing and produces a magical sound. I did two things. I drilled new, lower holes on the bridge to increase the angle after filling the old holes with a mixture of bicarbonate of soda and superglue (works really well). But this was not enough. I then discovered the idea of using beads and used some of my wife's metal spacer beads for a while just tying knots in the ends but although they worked fine and solved my problem - I now had the break angle I needed - now and then a string would break at the knot. This was frustrating and lead me to my current solution of using these bone bridge beads that I make myself and now offer to you.
If you have a break angle of less than 45 degrees currently and am looking to tweak or improve the sound of your instrument these might do it for you. They have certainly made a big difference to my guitar life with my vintage guitars.
Here is my youtube video explaining it a bit and showing you how to string a bridge bead.