waste of materials.
bring your spare antler (s) and repair them with a crude bench & roof setup until you get an upgraded iron (best there is)

I usually find it pointless to mine more than I can carry out. Even an antler pick will last that long usually. But if you insist, a repair station is better across the board. even if you need to make a forge to repair, the key is: you get the materials back when you tear it down. A second pick is materials lost forever once you don't need it anymore.