Interlocking Boxes

**UPDATE 3 Jun 23 **
Added version 4 (v4) of the SCAD file. Number of improvements, including an automatic notation scribed into the bottom of the box that records the dovetail and box size (useful if you have versions with multiple sizes). Also added in STLs for 1x2x20mm and 1x1x20mm, by request.

**UPDATE 17 Nov 19 **
Added version 3 (v3) of the SCAD file. This version adds the ability to give a rounded bottom to the box. This is useful when using for small parts storage, or like I am for