I modified my basic protective case for the Google Pixel 2 with a hexagon cutout pattern, inspired by Screwyluie's XL design.

The case is designed for a secure snap fit around the corners, while still being relatively easy to remove. I've left wide cutouts around the power and volume buttons so they remain easily accessible, and a wider cutout around the USB C port to accommodate my USB C headphones' over-sized plug.

The case shell is 1.2mm thick

I've included STL, SLDPRT (SolidWorks) and STEP files of the design, at least one of which should be compatible with most CAD software for editing.