Principle: The stepper motor should be loaded as little as possible.

For this purpose, there are brackets that take over the forces. Unfortunately, this bracket was missing on Topsi, which he had now made up for.

The video shows a man with a milling machine made of chipboard repairing his broken engines with washers.... I would spend 10€ and buy a new motor. But no kidding, a CNC milling machine costs money and if you avoid the mistakes from the beginning, you don't pay even more.