Double Garmin-mount hack

The mount is fixed to the Sram Garmin-mount using threaded inserts that I put into the existing holes of the Sram part. I used 3mm inserts that I melted into the part with my soldering ironIt enables me to use my front light underneath the garmin on my handlebar. This way the handlebar stays nice and tidy. The mount is divided into three parts, for support-free printing. The base-plate can also be used to adapt mounts for other parts (eg. GoPro)