The workpiece is fixed on a table using stops and hold-downs. The table adjusts vertically to locate the bit on the thickness of the workpiece. Another feature I like is the dust collection. It sounds a little lame, but many router-based machines and jigs spew dust and chips all over. The shroud on this machine registers the workpiece and collects chips before they can get away. For more details download the CAD file from our cadbull site. This can be used by architects and engineers. Download this 2d AutoCAD drawing file.