Retainer 

A retainer, or circlip, is a fastener used to secure components on a shaft or in a housing, preventing axial movement. They are commonly used in mechanical assemblies.

Key Features:

• Shape: Circular or semi-circular with open ends to snap into a groove.
• Material Options:
  • PLA: Easy to print, biodegradable, suitable for light-duty.
  • ABS: Durable, heat-resistant, for medium-duty.
  • PETG: Strong and durable, combines PLA’s ease of printing with ABS’s strength.

Retainers for M3, M4, M5 Shafts

1. M3 Retainer: Fits 3 mm shafts, for small assemblies.
2. M4 Retainer: Fits 4 mm shafts, for medium-sized assemblies.
3. M5 Retainer: Fits 5 mm shafts, for larger assemblies.

These 3D-printed retainers ensure components stay securely in place on their shafts, with material choices to suit various applications.