Polarstar Kythera VFC v2 gearbox spacer

prusaprinters

This is a spacer that secures a Polarstar Kythera HPA engine to the alignment nub, removing back and forth travel as well as preventing some rotation. Print 2 copies, one for each side of the gearbox.This spacer is secured through friction. To install, put the spacer on the nub with the open end facing backwards on the left shell piece. Place your Kythera engine as if you were installing it with proper alignment. Rotate the engine so it can test fire successfully.Add another spacer onto the HPA engine, the 2 halves should sit flush.Test fit and fire again to verify.