Repairing

When fighting or casting spells your equipped gear takes damage. It's strength lowers which lowers the effectivity of your gear. The amount the gear adds to your stats is based on it's effectivity.

To repair your gear you need to use silver of gold units on it. Silver units can repair up to 110% effectivity and gold units up to 120%.

When repairing silver/gold units add one to the strength for each units used on it. This means that using gold units has not benefit over silver units if repairing equipment under 110% effectivity but costs more. If repairing to over 110% effectivity alwats use silver units first and then gold units.

The cost of repairing can be lowered by having the Smith profession, being supported by someone with the Smith profession or being in a clan with the Smith bonus. The Smith profession and Smith clan bonus stack with each other.

The Smith profession lowers the cost of repairing by the amount of profession points invested into it%. So a Master Smith will receive a reduction of 25%. The Smith clan bonus lowers the cost or repairing by it's (level/2)%. So it max it's reduces the cost of repairing by 10%. When stacked they reduce the cost of repairing by 35%.

Being a Master Smith further reduces the cost of repairing with gold units by 10%. This perk applies only to the player with the Master Smith profession and not those being supported by a Master Smith. Even with this extra perk it is still more cost-effective to repair up to 110% effectivity with silver units first before using gold units.