Mix the development chemicals. Follow the manufacturer's instructions for mixing.
Turn out the lights. Make sure that the room is completely dark, with no light cracks, as the smallest amount of light can ruin the film.
Hold the film cartridge on its side, at a slight angle, against a sturdy surface. Strike the top of the cartridge with the hammer to crack it. Pry open the cracked cartridge to reveal the film.
Gather the entirety of the film and put all of it into the development tank and seal it.
Follow the chemical manufacturer's specifications for the processing and development time.
After the final rinse, specified in the manufacturer's processing instructions, hang the entire film on a shower rod. Use the blow dryer to gently blow-dry the entire film.