Been using this for months and it's great. I glued the USB C in with JB weld to make sure it could handle the temperatures of a parked car in the sun.
I also added a strip of fuzzy side industrial velcro for tolerance correction and easy load and unload.
The google pixel 1 doesn't have usb audio out so I also added a bluetooth unit to make it headphones free.
Made a video about it:
Should print fine on any printer you have access to.
suggest you add velcro for tolerance and glue the charger in with JB weld.