Simple parametric grommets for passing cables through holes, in round and oval versions.

Adjust parameters to your needs and print in TPU (I used Fiberlogy mattflex 40D). You may want to make the grommets slightly oversized for a press fit. Depending on your TPU tuning, the gap may need a little help after printing. I didn't need a knife, a little pull was enough to open the gap.

Enjoy :)