To lock the mount baseplate to the car's mirror ring you will need: - 2 pcs M3x10 mm countersunk bolts - 2 pcs M3 nuts To assemble the ballhead you will need: - 1 pc M4x30 mm hex headed bolt - 1 pc M4 nut - 1 pc M4 washer - 1 pc M3x10 mm countersunk bolt - 1 pc M3 nut The pictures are speaking for itself but here is the assembly HOWTO: 1. assemble the base - put the M3 nuts into their holes in "mirror mount clamp" - use an M3x10 bolt to join the "mirror mount clamp" with the "mirror mount main" component - put an M3 nut into its hole on the bottom of "mirror mount main" component - screw in the "ball joint sole" into "mirror mount main" by using an M3x10 bolt 2. attach the base to the car's windscreen - position the assembled base around the mirror base on the windscreen - lock it tight by using an M3x10 bolt 3. Assemble the mount of the G1WH camera - push the M4x30 hex-headed bolt thru the "ball joint middle" - add an M4 washer to the end of the protruding bolt - pull the prepared "ball joint middle" thru the "ball joint lock" component. Be careful - the thread on the "ball joint lock" component must look towards the ball. - push an M4 nut into the hex hole on the "dashcam clamp ring" - screw the M4x30 bolt into this nut - just make sure that the M4 nut and the "ball joint lock" - push the G1WH camera's optics into the "dashcam clamp ring" - screw in the M4x30 bolt to lock the camera in place - attach the camera to the base by screwing the "ball joint lock" to the "ball joint sole" component. That's all. I also made an assembly HOWTO video but at that time the "ball joint sole" component was the part of the "mirror mount main" component. Later I separated them for more precise thread printability. I printed every component with 25% infill, 0.2 mm layer height. If you would need to mount the G1WH dashcam to a 2015 Subaru Forester then print components "Forester mirror clamp bottom" and "Forester mirror clamp top" instead of "mirror mount clamp" and "mirror mount main".