I have a Roto Zip mounted on my 1100, 30,000 rpms. Most of my engraving was in wood, some 6061, brass ect. I just used router bits or dremel tooling. All worked fine. I do have the diamond drag engraver. That works great too because it is spring loaded. It only marks fine though not as wide as you would like. You can see the Roto Zip in the photo, I just made a simple mount it works. I always leave it on and I can still use the ATC.