How do I get a keyhole slot cut in my mounted poster?

hanging a picture ledge) so that the screw heads slip up into the narrow part of the keyhole, thus locking the shelf in place NOTES: For Plasterboard: Big

Keyhole mounting is a method of securing or hanging an object as flush as possible against a flat surface Shelves with built-in keyhole slots can mount to a

income tax slot One problem with a key slot is keep the plaque hanging straight I usually put in two key-slots so if it won't hang straight another screw can

play with cleo slot Add this as a negative volume on your PrusaSlicer and you'll be able to add hanging slots to any of your prints quick and easy! It works well for #6 screws