
These grinding discs work great when properly installed and used with a light touch. small size. By using increasingly aggressive abrasives, I can quickly remove light corrosion in hard-to-reach places in and around raised metal letters. (I would like to compare them to a more expensive product from 3M. It would be very interesting, I just don't want to afford such a product.) I have a hard time imagining a more effective abrasive of this type for the type of work I do. The only problem with my order was that there was no paper disc to attach to the mandrel on either side of the wheel - no big deal. Finally, when I look at the cartridge head-on, my Dremel tool rotates counter-clockwise. What this means to me is that when the grinding wheel is set correctly, the indentation on one side of the wheel is not visible when you look at the tool from the chuck side.

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