How much effort should one put into the back side of a sculpture? One that will hang on a wall so that the back won't be seen. Shaping the metal plate is so difficult. I can heat and heat and heat the metal, but the shape of the fish seems to dissipate the heat away. Some kind of magic geometry? Today I made two cuts in the metal to create a concave shape to the back of the fish. Many hours... and I'm still wishing for an acetylene torch.