Originally posted by electricdawn:

No, you need specific materials to be able to craft workbench upgrades. Usually you get a recipe when you have gathered at least ONE of the needed materials. You don't need to hoard things (well, you should on some materials, because you always need them), to get recipes for upgrades.

You need the RIGHT materials.

Not atleast one, you only get the recipe when you have had atleast every item of the unknown recipe in your inventory.

Atleast thats how i remember it working when pick axes and stuff.
I always forget core wood.