Ok, I just started black smithing today and ran into a bit of a problem. I got the forge and it works great, its a cast iron bowl with a hand crank blower. I lit the fire and threw in a piece of metal, at first I used a little charcoal but that didn't seem to get it hot enough, so I add a lot more and this worked. The problem is i burned through a 14$ bag in 3 hours and just flattened a piece of metal. Sense i am new to this i am not sure if this is normal, I need help why am i burning through so much charcoal!