Things you'll need:
a hacksaw blade
propane torch (and striker)
cup of water - for cooling/quenching the metal
grinding wheel suitable for steel
Next, in order to be able to work with the steel on the grinding wheel, it must be softened. This is done by annealing it.
To anneal the steel, heat it the portion that you need to be softened - 2 inches should do - using a propane torch until it turns red hot. Then let the metal cool slowly in air (don't quench it). You probably won't be able to get the entire 2 inch portion to be red hot all at the same time, this is okay, just heat it small portions at a time.
After the metal has cooled, it is soft. To confirm that it has been softened correctly, try bending it. If it bends, it is soft; if it breaks, the metal needs to be heated more or cooled more slowly.