The re-beveling didn't do that much, added a bit more volume and gave a somewhat cooler tone with greater articulation. Since they already came with a speed bevel, I figured the gains would be incremental. however, in these days I decided to try the thinner versions, and bought a bag of 1.3 (still small triangle, smooth), and I didn't liked them on the mandolin: they are lighter in weight, the sound is thinner losing a lot of bass frequencies, and the too harsh on the high strings. they also transfer less strength to the strings, so the overall volume is less and, in particular, they can't handle heavier dynamics, so if I dig a bit more on the strings, I can't get "more" volume. the strumming is interesting, lightening the sound and making it play like a classic "bright acoustic guitar", but I don't like it for bluegrass chops. I have three engraved small triangle TP 40's and love 'em! The 45/1.14 is nice too, the 50/1.25 starts to loose presence, but still nice.

I did play around with them a bit to see what I could get. Rounded two of the three tips to give me a point, a rounded point, and a fully rounded edge. I also deepened the bevel to the full edge width on all points.