Many of my projects mount to the wall. In North America, that means using #8 wood screws.
After some experimenting, I have found that this stl creates a void that allows the screw to pass through tightly, while having a countersunk area so that finishes flat against the design surface.
It will import as a solid, just flip it to a void to make an empty space.
The author marked this model as their own original creation.