give-me-all-the-hetalia-boys: snowcoveredsunflower: deadmomjokes: barfingunicorn: 823-hauntingconman: capnskull: the drum is filled with hot steam and then sprayed with cold water. the pressure on the outside of the drum is far more than inside.
tags: skleero,
from: https://skleero.tumblr.com/post/134489844193