OK, this is a hack of code Cronel has on his snippets site, which allows players with the skill and a sharpening stone to sharpen their weapons to do more damage.
I removed the success train functions, and fixed some of the function calls to match AFK's setup. The original snippet is here
To make it easier to read, I've moved the snippet instructions to here
As always this is tested as working, and is on Wolf's Lair if anyone wants to see it.