Machine sets

I refer to as Machine sets or Multiplets, the set of machines related to each other by symmetry. If interested, read about general considerations in symmetrical machines. 

4 Step set.

Balleninja set.

Isostar set and Osostar set.

Futurina set and Futurouta set.

Hop set.

Ninja Star and Nunchuck - these are in the same set.

Piterina set and Piterouta set.

Trap Door set.

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