Here is a version I made over the weekend. Used 3/4" ply for the case and 1/2" for all the drawers. 350mm full extension slides that extend enough beyond the fronts so that you can open the case and get to the tool. Also used the LR-32 to do 32mm holes on the sides so that the slides can be adjust to fit different configurations and systainer sizes.
From the front all loaded.
The drawer pulled out.
Top of a systainer open.
From the front all loaded.

The drawer pulled out.

Top of a systainer open.
