Wasn't sure where else to put this, so into the general thread it goes. Although I have a basic hammer, I am unable to extract copper ore from the very copper-chunkful looking rocks on the mountain path. Instead, I use my hands to grab a single rock, despite having just gathered a bunch of limestone using the same hammer near the river minutes before. My stone-based gathering now seems stuck on no-tool mode. I thought perhaps my hammer lost durability or something and tried to craft a fresh one, but then got a message that I already had one of that tool and couldn't make a replacement.

Short version: I made a hammer, and used it, but then did some base progress and can't use it again for whatever reason. Help plz.