Originally posted by vinyblaster:

Originally posted by M6Hurricane:

That isn't available to me, it just says "flint knife."

You need tin to unlock the recipe at the forge.

And of course you must have smelted some tin. The forge needs copper, so you must have collected BOTH tin and copper ore. And to smelt those the smelter needs 5 of those cores to be found in burial chambers. So sum it up, if you haven't progressed into the black forest already, your boars still have some happy time ahead