The motor is making an unhappy noise / is whistling which hints at a broken bearing according to our research.
We will try next to open the spindle and grease the bearings. For that we need a face pin wrench which I have to order in.
Please don’t use the machine or use the area until speaking with @CNCtechs - the spindle is removed and there is a work in progress situation. Please don’t touch or we risk losing small parts. Cheers