Many of us know this, when you are working with the Dremel or a bigger grinding drum, and after some time the surface is dirty. Further work would bring no good results. Now you would have to take a new one or try to clean it somehow. Use a Cleaning stones made of plastic, you can buy this in your local hardware store. Start your tool and hold the cleaning stone slightly to you dirty tool. Move it up and down, as long as almost all the dust is gone. A very inexpensive alternative is a used PE plastic bag or a simple garbage bag that is shaped into a ball and wrapped with masking tape. Perform the bag gently to the current device. The sanding dust is removed and the paper is clean again. Something very important, please make this process only at moderate speeds, otherwise you will melt the bag or the cleaning stone by the heat of the rotation and you get exactly the opposite. Grinding drum about 800 rpm Dremel only on level 4-6 I hope I could help some folks around here to improve their working skills… Hello Admin / Jörg, it is possible to make a separate category for it, so that everyone can show us his tips and tricks? That would be great, thank you…!