Used a stylized dovetail pattern to split the small tracker book into two parts. The split pattern I chose already provides some structural support in the X and Y direction, and for structural support in the Z direction I added dovetail slots along the split line and included dovetails keys to fill those slots to be used with a bit of glue.
It's not ideal having to split the gorgeous original model, but 220x220 print beds (like on my K1C) or smaller are very common, and I think the dovetail pattern I went with gives a pleasant look to the design.
Largest part (the tracker/book part) now only requires an area of 151x137 mm, whereas the original required 249x137 mm.
So, for a single small tracker book you'll need to print the following:
Also included a folder with 5x3 magnet holes instead of the original 6x3, since the former is what I had at hand.
Printed on a Creality K1C with a 0.4mm nozzle, using 0.24mm for the layer height, except for the text, which was 0.12mm via the Height Range Modifier in OrcaSlicer (range between 34.0 and 34.4). Used tri-color (red, blue, orange) silk PLA for the covers, pins, and wheels, white PLA for the pages, and black PLA for the text.
I only did the small book, because I didn't need the version with the spell cards. Please let me know if you need the larger tracker book split using this pattern and I'll give it a shot when I get the chance.
Note: The included pictures depict prints with shallower dovetail slot (and shorter key): 1.4mm vs the safer 2.0mm depth included with the models.
The author remixed this model.
Split the small book into two parts to make it possible to print on smaller printers, and included a version with smaller 5x3 magnet holes.