Replacement gear for Onkyo amplifier A-9510 motorized input selector. The gear is driven by a worm gear.
Replacement gear 
Replacement gear 
Replacement gear in assembly, broken gear on the right
Replacement gear was tested for correct operation. It was created using a high precision 3D printer using durable Nylon material.
The gear might also fit into different Onkyo or Yamaha apmplifiers (? A-9511, A-9310 ?)
Product available in the e-shop