Possible Duplicate:
What does durability do?
I noticed that I have to repair my weapons every so often (as I am now above level 10), and I was wondering how the durability percentage affects the weapon, if at all.
Is it something like: 100%- no effect 80%- 10% damage reduction 60%- 20% damage reduction etc.
Or does the weapon just break when the durability reaches zero with no effect on the weapon before it reaches this point?