Demolishing

A demolishing weapon is made to destroy constructs. Damage inflicted on a construct with a demolishing weapon continues to spread throughout the creature-cracks form, linkages fail, surfaces erode-and otherwise dismantle its body. When you damage a construct using a demolishing weapon, you deal an extra 1d6[persistent,force] damage. On a critical hit, you deal an extra 1d12[persistent,force] damage instead