Custom Sized Sorting Boxes for Norma / Kraft Werkzeuge Organizer

Product info

German discounter NORMA regularly sells small-parts-organizers by KRAFT WERKZEUGE (Kraft Tools). 
While most of these are the usual crappy, thin and flimsy “Chinesium” stuff that we all know quite too well, they sometimes also have a better variant with 2x4 grid on sale. It may also be available through NORMA24.
They seem to be originally produced by Walter Werkzeuge.

The one I'm speaking of is made of thick and sturdy plastics. The robust lid is made of clear-view acrylic with a sealant strip all around to make it water-proof. The individual boxes are notched out at the bottoms and key into a protruding part on the bottom of the case itself thus preventing shifting. 
The cases themselves are stackable and lock to each other with aluminium brackets. 

From a quality point of view, these plays in league on their own.
The last time (August 2025) they went over the counter for 10 bucks a piece. This is a bargain imho.

Motivation

The only downside I experienced was, that the organizers only come with 1x1-sized boxes, eight of them, thus limiting layout flexibility. So what to do, if you like to put something bigger or oddly shaped in it?

As a solution, I designed these replacement boxes for said organizer.  I tried staying as far as possible at the original design. As the horizontal and vertical spacing is not the same, you can't put a vertical arrangement horizontally and vice versa. So I needed to go the extra mile and designed all the shapes and sizes I could think of. 

Sizes / Layout

Print-settings

I printed everything in PLA. The material thickness on all sides is 2mm which is simmilar to the original ones. With a 0.4mm nozzle a wall setting of 2 usually leads to the walls being printed solid, which is fine.

The design prints well in bigger layer heights like 0,24 or even thicker, because there is not much detail.
You can save a lot of time that way. If you also want to save on material, set walls to 1 and infill to 10-15% cubic or gyroid. Saves up to 40% material and is plenty strong also.

All boxes have overhangs on the bottom. Use auto-supports or place fewer supports manually (see screenshot). This will make it easier to remove after the print is finished. 
The rim on the top of the boxes has 45° angles and won't require supports.

Overhang settings and performance is deeply dependant on your printer's capabilities and layer cooling. 
You know what works best for your setup. Please adjust accordingly. Look at the final print direction on the bottom and manually set 1 or 2 support strips perpendicular to it (see screenshot).

Optional

If you dont want to emply supports at all, you may also split the parts into two separate pieces within your slicer. Then glue them together afterwards (cutting position 3mm from the bottom up). I wouldn't recommend the hassle as the overhang parts are not to be seen, as they are only on the bottom.

Quick reference:

• Material: PLA, PETG, …
• Layer height: select what you prefer, I used 0,2 but higher is faster
• Supports: yes (preferred manual)
  One or two small support lines perpendicular to print direction is fine
• Layer count top/bottom: 3/3
• Walls
  • Set 2 walls: Side walls get printed solid
  • Set 1 wall: Side walls are infilled (10-15%, gyroid or cubic)
    Saves up to 40% material
    • if you set 1 wall, you might consider pushing line width up a bit
      for my 0,4mm nozzle at 0,2mm height, I could set outer walls to 0,65
       

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