it is in sully's steam powered paraphernalia
you break it with your rubber mallet.
You find it on the island al the way to the left.After that, you break it with the mallet and pour it on the hot thing to get into the building
how to do the bridge terminal on poptropica's steamworks island
steamworks island
It's Steamworks Island #14th Island
the crab on steamworks island is next to the living quarters
Steamworks island
It is in a junk pile inside Sully's (to the left).
Beat the island.
you go in it
Steamworks Island.
Jump on it.