selflocking door handle

thingiverse

A Simple yet Effective Solution: Keeping Cupboard Doors Closed. To keep your cupboard doors firmly shut, consider installing a mechanism that locks into place as the door closes. This ingenious device is designed to be mounted behind a small hole in the door itself. To unlock it, simply press the lever with your finger through the pre-drilled hole. Assembling this clever contraption requires just two essential components: a nail and a spring. However, users should note that the holes provided for the nail may be slightly too small for most standard nails, necessitating a quick trip to the drill to enlarge them. When it comes time to mount your new cupboard door keeper, you'll find that the designated screw holes are perfectly suited for 4mm flat-head screws.