I built a 3D scan platform here. You can either print it as a normal flat component or create the platform as a rotating platform. A ball bearing (6201Z) is needed for this

The rotating platform still needs some fine-tuning but works perfectly for me. You can find and buy the scan points either on Amazon or from the respective scanner manufacturers. I recommend a very dense distribution of points so that the scanner always finds a reference point

12.11.2025:

I have updated the print profile and added a new bottom part. The ball bearing now has very little play and the platform no longer wobbles back and forth. I had previously based it on a different bearing that also had an additional metal cage pressed in. Now it should fit