New for Bambu Lab's first-gen CoreXY machines, E3D now offers Bastion Coated Gears – a £45 (~$60) drop-in replacement for the X1C, X1E, P1S and P1P 3D printers. The main draw is a diamond-like carbon coating on the drive gears and hobbs that's hard-wearing and self-lubricating, E3D says.

Colorway completionists won't be able to pair them with the purple high-flow ObXiDian 500 nozzles – only the newer Bambu Lab machines get those – but as a standalone upgrade for your long-running X1C, X1E, P1P, or P1S, it's likely a fine and funky addition all the same.