Right now it sounds like hammering, sawing, and sanding wood. If a player were crafting a food item it sounds out of place. The idea is to have sounds that make sense given the material being used to construct.

I like that idea. So if you make food, it should make the sound of mixing or chopping, like you'd hear in a kitchen. For metal items (stuff involving iron/gold/mod metals like copper, tin, etc.), the hammering sound from Tinker's Construct would do great. Leather armor could have a dull hammering sound, like hammering pins into leather, or a sewing machine sound.