These are insert boxes for Auer Packaging assortment boxes. 

They have been re-engineered to allow more flexible use than the standard injection molded boxes Auer Packaging sells. They are fully backward compatible with the Auer Packaging insert boxes and most importantly their assortment boxes that you can put these bins inside.

There are different print profiles for different variants of the boxes with different features. 
Most profiles contain the boxes in sizes 1x1, 1x2, 2x1, 2x2, 2x3, 3x2, and 3x3. One of each on the plates, clone them as needed and only print those you need, as you need them. 

Features:

• Optional fingerslide on the south side of the box: the bottom is curved into the south wall allowing the user to slide small items from the bottom up onto the wall without having to grab a hold of the item inside the box on the bottom. Try it for yourself: it's really handy with e.g. small washers and such.
• Optional place to affix a dymo style labels - or use it to grab the box out of the assortment box.
• Choice between full height like the original Auer bins, or half height bins that can be stacked inside the assortment boxes. NOTE: due to the design of the Auer assortment boxes it's not possible to use half height bins at the edges of the assortment boxes. In some places they can be forced in, but they'll interfere with the operation of the lid.  
• Optional internal dividers
• Optional sliding lids to help deal with tiny items (e.g. M2 washers or so) as they could otherwise escape out of the boxes. 
• Fully stackable regardless of size: you can stack larger insert boxes on top of smaller ones and they'll lock in place.
• No support needed.
• No assembly and no glue needed
• Fits the Auer Packaging grid
• Fully backward compatible with the Auer Packaging assortment boxes and their insert boxes.

Printing

• IMPORTANT: The slicer must not be set to automatically pick the direction for bridges as it will make extremely long bridges. This WILL lead to print failures. Instead set it at 45 degrees to keep the bridge length under control.  This is set properly in my print profiles. Do NOT set it to 0 (automatic)!
• I printed mine in PLA, but PETG or such will be more than fine as well. Try to avoid plastics that shrink too much as you'll get warping due to the size of larger boxes, as well as tolerance issues. 
• Make sure to have a clean print plate (water and soap).
• Use glue as needed for your plate/filament combo.  

Why not gridfinity?

I understand the love for gridfinity, and I do like the ecosystem. So why did I chose to make a somewhat similar system that's not compatible with it? I wanted the far larger assortment boxes with their fully transparent poly carbonate lids that Auer Packaging sells. Also the amount of time and filament a printer needs to print things like the popular schuylab boxes felt wrong when I could just buy injection molded ones that were a better match with my needs. But hey - if you like gridfinity better: I fully understand. To each their own.

Design goals:

• Backward compatible with the Auer Packaging system
• Stacking insert boxes on top of one another even if their sizes are a bit of a mismatch
• More options like labels, fingerslides, half height, lids, separator walls, etc. 
• Fully parametric originals in openscad. This is not included at this time, I will release it later - I need/want some feedback first - so leave some constructive criticism :-) 
• Keep the amount of filament and printer wear and tear under control.
• No need to print the assortment containers, and have fully transparent injection molded lids on those outer containers.

Inspiration:

• The idea of not replicating the feet of the original boxes by @mrkp57's  [https://makerworld.com/en/models/2302719-auer-assortment-boxes-multiple-sizes#profileId-2513283](https://makerworld.com/en/models/2302719-auer-assortment-boxes-multiple-sizes#profileId-2513283) 
• The whole Gridfinity ecosystem, too many to point out, but let's start with the ability to stack boxes other of a mismatched size.