I understood that Dorothy's Big hammer was a dangerous tool.... I have kept it away from the kiddos for obvious reasons but thought that I would be able to wield it safely. Perhaps I was wrong. After pounding three 18 inch spikes into our Colorado hard pack yesterday I came up with a very sore forearm and this lovely bruising. Wonder if I gave myself a fracture - at least it wasn't due to bad temper this time only hard ground.