3D Modeling and Printing on Chrome OS

I've got an Ender 3 Pro 3D printer, a Raspberry Pi 4, and a Pixel Slate. I can't interface directly with the printer over USB from the Slate (plus having to be physically connected to things is like so lame) so I installed Octoprint on the Raspberry Pi and connected that to the printer's USB interface. This gave me a pretty web interface for controlling the printer - but it's only accessible over the local network.