weapons changes

I want to change weapons by making wood swords have a 10% chance to wood cut someone. Stone swords can randomly break because its stone but 0.5 second cooldown. Copper tools can start better then iron but become worse and oxidize. Full durability can do 8 damage 3/4 durability can do 5 damage 2/4 durability can do 3 damage, and 1/4 durability can do 1 damage. Iron is good so skip to gold. Gold swords should have the durability as a stone sword not less than a wood sword.