The Router Base is a great addition to add to your Ultra High Speed Engraver. This is a tool depth holder that allows you to set the depth on the surface you would be working on. This product works best with wood or other soft materials. This only works with your POWERCRAFTER, not on your ROTORAZOR or LADYCRAFTER. The Router base attatches to the front of your POWERCRAFTER for depth control and right angle work, creating inlay channels or cutting fret lines are made easy with this attatchment.