I designed this as a reusable screw mount insert that can be dropped into any model needing wall mounting or screw slots. The shape is built by combining primitives and setting them as negatives, creating a keyhole-style mount: a larger circular opening for the screw head that tapers into a narrower slot for the screw shaft.

This makes it easy to hang or secure your prints with standard screws, while still allowing the part to be removed when needed. The design is simple, functional, and can be scaled for different screw sizes (M3, M4, M5, etc.).

I created this with the idea of making it a universal negative shape — something you can reuse in Tinkercad, Fusion, or any other CAD workflow. Just import the piece and subtract it from your model to instantly add reliable screw mounting holes.