Need a 35x35mm tripod quick release?  This should do the trick.  It fits my Sunpak tripod, but should fit most that take a square model with two angled sides. 

My current configuration with this has a 5/8 inch ¼ 20 bolt through the bottom, secured by a 4mm thick ¼ nut which nestles into the square opening on the top.  That gives me enough room for it to secure snugly against my camera/lights, or to swivel a touch if needed. 

Plastic between bottom and top has minor threading to help hold it snuggly. 

Print with long side down.  Supports questionable, works with and without.   Infill determines strength. 

Two versions are uploaded.  One that has the long side parallel with the angled sides, and one that has it at a 90 degree angle. Both will work, but it's a matter of preference.