Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Beta Crafting other than Iron Weapons/Armor

I like how you can use the harvested iron ore to craft your own weapons. Also the option to improve existing weapons with the grindstone.

My question is, has anyone found out how to sew or use leather to make leather armor. Also is there some way to improve bows/staffs and the other equipment parts like you can do with the grindstone on Iron weapons?