Grommet for cat backpack

The plastic grommets that protect the airholes in our cat backpack became brittle and fell apart. I modeled these and they fit perfectly on the first try!

Fits holes with an approximate 23mm ID.

Just remove the old rings, place the inner and outer grommet through the hole, and snap together. Printed in PLA with 6 walls or so, 0.16 layer thickness worked well.



Here's the [OnShape model](https://cad.onshape.com/documents/5d4bf1202fe986d5dbd01de0/w/883852340f7d6fe449893414/e/4364102129f4ff602a008e22?renderMode=0&uiState=667350a25846263bac49a5b8) if you'd like to remix.