Ouch! Nah, the worst thing I will do is put them in isolation and I don't want to do that. I don't eat my chickens.....or even my beef cattle. Yeah, I know it doesn't make any sense, and it would be a lot healthier than store bought, but I just can't do it.Well there is another cure that works . This may seem harsh or cruel to some but better than the ax . Trim the beak to the point of it bleeding . A dog toenail trimmer works . Have blood stop powder handy or be ready to cauterize the wound with a hot knife blade or soldering iron . Most of us do not have a debeaking machine like commercial operations . The idea is to make the beak sore so they stop pecking on hard things .By the time it heals they have forgot about breaking eggs . It is best to do all birds in the pen . Otherwise another bird may break the eggs and the habit continues .