Creation Lathe

In ancient times, Solus Prime once utilized the Creation Lathe, a holographic lattice that she could project from her body. Designed to be wielded alongside her famous Forge, the Creation Lathe allowed Solus Prime to design the architecture and components that her vast, supernatural smithing efforts might require. The Lathe supplied the vision behind the strikes of the Forge, allowing Solus Prime to forge the myriad Artifacts of the Primes.

It apparently had six sides.

The Covenant of Primus
Solus Prime used the Lathe to create numerous weapons and artifacts for the battle against Unicron. Only Solus Prime could use the Lathe properly, because of her unique processing architecture.