Dwarven Reinforcement Feat 5
Source Pathfinder Advanced Player's Guide
Prerequisites expert in Crafting
You can use your knowledge of engineering and metalwork to temporarily strengthen thick objects and structures.
By spending 1 hour working on an item, you can give it a +1 circumstance bonus to its Hardness for 24 hours. If you're a master in Crafting, the bonus is +2, and if you're legendary, the bonus is +3.
You can reinforce a portion of a structure, though 1 hour usually reinforces only a door, a few windows, or another section that fits within a 10-foot cube.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
DwarfA creature with this trait is a member of the dwarf ancestry. Dwarves are stout folk who often live underground and typically have darkvision. An ability with this trait can be used or selected only by dwarves. An item with this trait is created and used by dwarves.