Fully Parametric Screw Box Organizer

An OpenSCAD script to create fully parametric boxes.

Initial intent was to create storage boxes to mount on a wall to organize screw boxes, inspired by projects by makers CHEP, April Wilkerson and DIYTyler. See video from CHEP here https://youtu.be/UcZq6gPM_sk

Default dimensions should work for common U.S. screw boxes.

The script has parameters for common metric and standard counter sink screws (a.k.a. flat head screws). The screw holes can be omitted as needed. If a screw dimension is specified, the screw holes are added. If a metric screw side is specific, any value for a standard screw is ignored.
The screws are always placed on the bottom of the box.

It has the option to add slots for connecting boxes together for stacking.
It has some validation on slot parameters. E.g. slots will be omitted if their width is less than 4 times the length of the side they are requested for.