This is a simple guide to make your own 3x3 sliding puzzle - whether it is a map or not - using Tinkercad, thanks to the model @Nikolaos Babetas uploaded of the puzzle itself without any image on top of it.
The aim of this remix is to make as easy as possible the process of modeling your own puzzle by putting the shape you want on top of it - specially because this shape needs to have the same gaps than the pieces from the puzzle so these can slide.
As an example, this is one of my custom designs (I'm leaving a picture of it above as well): https://www.printables.com/es/model/243064-mandalorian-3x3-sliding-puzzle
Here's the link to my Tinkercad 3D model, where I explain the modeling process step by step: https://www.tinkercad.com/things/0bx90F22RZG
Even though it is said in the instructions on Tinkercad that your shape has to be 2mm tall, it can be made shorter than the original maps puzzle shape from @Nikolaos Babetas - I recommend a minimum height of 0.6mm. However, I wouldn't advise making your shape even taller than 2mm.
In case it was useful for you, please leave a like ❤️ and upload your make!
I'd be very thankful as well to hear from your advice to get some feedback and improve.
The author remixed this model.