This grip extension adds the palm swells from Steam Controller (2015) to the new Steam Controller (2026), which makes the trackpads feel better to use.

The only model included is for the right side grip. Because the controller is symmetrical, it is possible to mirror the model in your slicer to make the left side version.

No tolerance gaps were modeled in, as I am using a resin printer.

How to attach to your controller? ... Well, that's why this is overall just version 0.9 and not 1.0. My plan currently is to just use some double sided adhesive. I'll be exploring other methods in the future.