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: The Best Ship in the Multiverse!,
from: https://gallifreyinfinite.tumblr.com/post/153064309076