Hot Stuff

Hot Stuff is a reforge stone that applies the Heated reforge bonus to mining tools. It can be obtained from Forging materials in The Forge, requiring (4). The reforge does not give any base stats. The reforge bonus grants for every 2 blocks down you are on the Y-level. There is no requirement to forge or use.

Formula
The mining speed bonus is calculated using the following formula: $$(localY-playerY)/2$$

$$localY$$ depends on the island, being 384 for the Dwarven Mines, 512 for the Crystal Hollows and 128 everywhere else. The bonus cannot be negative, and will not reduce your speed further when above the localY.

Trivia

 * Because the Crystal Hollows is below the Dwarven Mines, which itself is below the Deep Caverns, the Heated reforge bonus accounts for your height beginning at the Deep Caverns when in either the Crystal Hollows or the Dwarven Mines. This means that if you want to use this reforge to the best of its abilities, it is best used firstly in the Crystal Hollows, secondly in the Dwarven Mines, and thirdly in the deeper levels of the Deep Caverns.
 * There used to be a way to craft the reforge stone using 96 Enchanted Hard Stone and an Enchanted Lava Bucket but this was removed sometime in July 2021 in a shadow patch.