This is a box that is designed to be laser cut. It can be used for the storage and counting of screws and nuts and has a notch for stacking alignment. A divider is installed while the box is being used for storage to prevent any nuts or screws from falling out of the sorting holes.

I designed this for sorting 4-40 nuts and 1/2" long 4-40 screws. I used 1/8" hardboard for the material. You ideally want the material that the box is made from the be the same thickness as the parts that you are sorting. The 1/8" hardboard is a little thicker than the nuts, so you sometimes get 2 in one sorting hole. Running your hand over the sorting area you can easily feel when there are 2 in a hole and correct the situation. When I sell a 6 Packer (http://www.thingiverse.com/thing:16290, for sale at timogiles.etsy.com) I need to count out 22 screws and 22 nuts to be packaged. This box makes counting much faster and does a great job storing them when I'm done!

1. You can download the openscad file and modify the design as needed. The variables are pretty well commented so you will know what you are doing :D
2. Hit F6 in openscad to render the design
3. Export as a .DXF
4. Import into inkscape with a manual scaling factor of 0.0254
5. Apply the creation tools of your liking
6. Glue together
7. Box!