Twisted Block of Dark Iron
Dark Iron is the only block in the known universe that can be bent against the alignment of reality with minimal fuss. Simply slap a sprocket on, and give it a twist!
Other blocks can be placed against the dark iron block (up to a point), and the original block can be removed if desired.
Placing a Twisted Block against another turned dark iron block will not, as some have feared, form a world-devlouring black hole; instead it will merely twist the original block slightly. It's perfectly safe!
The same may not be true of all other blocks; it would be wise to keep bold experimentation well away from any planet you have fondness for.
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Twisted Block of Dark Iron
