Anyway they are done and they don’t show and work as they should.
The SOSS hinge is a neat invisible hinge but it is a tough install. The company will sell you a jig for 70 dollars. Their jig does work but it is not stable and hard to mount in cramped spaces. So Imade my own for a job where the customer wanted those type of hinges. I hate it when they go to a Rocklear store to shop for hardware.