This mount has recessed holes in the bottom so that it fits snugly onto the body of the Android Auto unit and slotted holes to account for any deviations in the mount or device.
I've had good success printing them with .15 layer height and 100% infill. It's probably possible to back off on the infill and still have good results, but filament is cheap and you don't want your ball to become separated.
The author marked this model as their own original creation.
