This is a simple SCAD file that generates a storage box and its cover. To create a box:

1. Open the ParametricBox.scad file with openScad ( http://www.openscad.org/ )
2. Modify the variables box_width_in_mm, box_length_in_mm, box_height_in_mm, box_tickness_in_mm, lid_height_in_mm, lid_tickness_in_mm and lid_tolerance_in_mm to suit your needs.
3. Press [F5] and then [F6] to generate the cover.
4. Export it as a STL file
5. Comment out the line make_box(); by adding // at the beginning of the line.
6. Remove the comment ( // ) at the beginning of the line make_cover();
7. Press [F5] and then [F6] to generate the cover.
8. Export it as a STL file

No support is needed.

This object main web page is: http://www.ctheroux.com/parametric-storage-box/.