Using the original Quad Lock Handlebar/Stem Mount to start from (see picture), this Adapter replaces the handlebar part to fit on a Garmin mount. I did that for the time I ride my bike indoor on Zwift and want to have my mobile phone rather than my Garmin bike computer on the handlebar.
For the M5 thread, you can either have a thread insert installed or thread directly into the Adapter.
Prusament PC Blend was my choice for resistance reasons, but PETG should also do the job.
The author marked this model as their own original creation.