I have taken my original design and changed the way the supports and handles are attached. I have also, added a version that has six extra holes for magnets. These extra minis won't be as secure as the other fifteen, but they are great if you only need a bit more storage space.
With the old design, getting the spacers to stand straight was a pain. With this new design, all you need to do is thread them in place.
These use the same spacers as my Stackable Miniature Storage Trays. If you need a spacer longer than 55mm, you can use the ones from that.
For each bin you will need:
1x bottom platform
1x top platform
4x spacers - Pick the size that best fits the minis you are storing.
4x handles - Pick the same size as the spacers.
1x 3qt. flip top bin
30x 6x2mm magnets - optional
42x 6.2mm magnets - optional - If using the version with extra holes
The threads are modeled with a 0.2mm offset to allow for printers that aren't perfectly calibrated.
I am open to suggestions if you find any issues or anything that can be improved upon.
I have added a tool to help with indexing the magnets. The side labeled "S" is for the storage tray and the "B" side is for bases. I put a magnet into a base and stuck another magnet to it, to index the "B" side correctly. For the "S" side, I just made sure the base repelled from the magnet I inserted.
The author hasn't provided the model origin yet.