I have found a lot of success using MAAS and a hand towel. I removed a lot of tarnish and residue from very old razors with this simple method. It was surprisingly fast and easy. Just be careful with the rubbing/polishing when you near the edge. I would recommend you try by hand first and then move up to the dremel if you are not getting the results you want. You don't want to be kicking yourself after you break the razor because you rushed into something. Remember, straight shaving is meant to be a slow and enjoyable process.