For a long time I have been looking for an inexpensive, continuously rotating, low-noise and energy-efficient turntable.
It occurred to me, what if I put together a clock mechanism with 3D printing?
So, design this Turntable, just buy the mechanism of a watch that is about 1€ and with that we will have a functional turntable!
It gives a complete turn per hour, so it is perfect for those models of your room that you want to rotate progressively.
The battery will last for months or years and it can handle models up to 100 grams!!!!
The watch used is a standard, affordable one from any store or bazaar, here an example: