Gears

"OH NO. WHAT HAVE I DONE TO YOU?"

- WX-78

Gears are items dropped by Clockwork Knights, Clockwork Bishops and Clockwork Rooks, can be found by digging up Graves (chance of 3.07%), and have a chance of dropping from Tumbleweed.

Gears can be used to build an Ice Box and a Divining Rod, as well as boost the max stats of WX-78 by simply consuming them. In the Ruins, repairing Broken Clockworks with 3 Gears will spawn a friendly damaged chess monster (Damaged Bishop, Damaged Knight, or Damaged Rook).

Clockwork Knights, Clockwork Bishops, and Clockwork Rooks and their broken counterparts will not respawn, nor will graves after being dug. Therefore, Gears are a non-renewable resource.

Reign of Giants
The Reign of Giants DLC introduced renewable Tumbleweeds which have a chance of dropping Gears.