Introducing the Piston Baby Rattle to turn every baby into the gear head you have always wanted. This little rattle can be filled with a child-safe noise maker of your choosing (rice, barley, etc.)

Print in PETG on a slow speed for optimal layer adhesion with several walls (3mf file is set at 5). Ensure the ‘pause at layer height’ is present on your slicer before it seals off the piston.

Wash on top shelf of dishwasher as necessary, or by hand. The PETG can handle it just fine.