Because the original model did not include any information about size, I just recreated the design to fit my needs. My design is optimized for the Cucina & Tavola cutting board (20x29 cm and 25x37 cm) available at Migros but can be customized for your needs both in terms of dimensions and amount of cutting boards.
Stick some double sided tape to the bottom and stick it next to the wall of your cabinet
The attached Fusion360 file allows you to change various parameters:
Just change the parameters to your desired size, combine all the bodies to one solid and export to your slicer.
The author remixed this model.