Toplionace220V Leather Polishing Burnishing Machine Leather Edge Grinding Machine 0-8000RPM (without Flexible Shaft Handle)

It looks like it should be a useful piece of machinery, however there is clearly zero quality control at the manufacturer. I started using it and within minutes there was a noise which quickly got louder and louder until the machine was vibrating badly. I've sent it back for a refund.Chinese manufacturers will make a product to whatever standard the customer wants. In this case "Topionace" clearly ticked the box "cheap as possible, don't bother checking them".