Weapons master

As a Minor role, you can spend ten minutes to sharpen or otherwise maintain a weapon. Until the end of the next combat encounter, this weapon has +1 to its damage. As a Major role, you can spend ten minutes to sharpen or otherwise maintain a weapon. For the next 3 combat encounters, this weapon has +2 to its damage.
You can sharpen as a part of light activity within a long rest.
At level 8 This always counts as light activity, so it can be done while taking a short rest. And the damage is increased to +3 and +5.

A dull weapon is a liability to yourself and everyone around you. A well-oiled mace, sharpened axe or rustfree blade will serve any purpose you throw at it and and split any skull you throw it at.

When it comes to maintaining weaponry there is no one better than you. Making sure the the axehead is on tight or the sword is sharp is very Important, and I know that the sound of my wetstone is driving you crazy but you are the one who insisted on breaking down a stone door, with a greatsword, A greatsword! Do you have any idea how hard it is to minimise the loss of material when removing nicks in the edge of a sword? And a greatsword at that, the edge has to be consistant the whole way up! That sword is almost as tall as me!