Stereo GoPro mount for Sunpak 6200 tripod

Base is designed for Sunpak 6200, may or may not work with other tripods (dimensions: bottom square 42x42 mm, top square 34x34 mm, height 8 mm.) Eye separation 75 mm (a bit high, but you can't go lower without redesigning camera enclosures or hanging one upside down.) Extra care taken to fine-tune a good fit between clamps and enclosures, and to add reinforcement ribs (3D-printed clamp lips are flimsy and snap off easily, especially when printed in the "natural orientation" for this mount, with