TLDR: Don't print this unless you want to waste PLA. This is just a proof of concept.
I was wondering if I could make Rubik's cube as a print-in-place model. It did work - more/less. This is made for 0.2mm layer height. The spaces are just large enough to leave a defect between the different parts. The temperature needs to be high enough to allow better vertical strength, but not too high to cause the layers to fuse. I used 220 for the 1st layer followed by 215C. I wasted a lot of PLA trying to print this. This will not work with PLA that has additives (ie silk / shiny). I had good results with Overture, particularly PLA+.
If you do end up printing this, you will need to use a knife to gently separate the layers.
The author hasn't provided the model origin yet.