Brompton Garmin Holder/Stem Mount

Best to print it in ASA, as it does not deteriorate over time. I personally used quite high infill of 75% for strength, but lower infills can be used. It will look odd on the flat bars, but with any riser bars it shortens the distance between the unit and the eyesight.

It is best printed tipped on one of the sides with organic tree support, high 5 lines raft and 5 lines brim. 

The original model did not have the mount itself, just the place to mount it.