Bench jeweler tip. Mandrel mod for small brushes Posted by atlasjewelers on October 11, 2014 Posted in: jewelry repair, Work shop. Tagged: bench, goldsmith, jeweler, polish, repair. Leave a comment When putting on a small brush on a mandrel, it helps to taper the end of the mandrel so the brush centers itself when you put it on. Share this:TwitterFacebookLinkedInPinterestEmailLike this:Like Loading... Related Posts navigation ← Ruby and diamond remount. Memory lane. My first rings. →