Need a custom hinge sized to your own project instead of hunting Printables or Makerworld? A print-in-place hardware hinge: two flat leaves with screw holes, joined by a piano-style knuckle strip. Prints already interlocked and free-swinging — screw each leaf to its own surface, e.g. a wooden box and its lid.
01 Leaf
02 Knuckle
03 Screw holes