MGS Guide Features
Multi-Position Stop
  • The MGS-20 guide is easily installed and removed from your tenon joiner with two captive thumbscrews (included) using the existing mounting holes on the bottom of your joiner. No modification of your joiner is required.
  • The stop dogs can be set to any position ranging from 3/8-inch to 2-5/8-inches from the centerline of the mortise. This means you can place a tenon in the center of board widths from 3/4-inch to 5-1/4-inches.
  • The stop dogs are easily flipped forward for use, and flipped back when not in use. Use any combination of stop dogs to suit your needs.
  • Each dog arm is equipped with an 8-32 threaded hole so that spacing or adjustment screws can be added to any stop dog.
  • For convenience, the two outside stop dogs already include spacing screws (stainless steel socket head cap screws and jam nuts).
  • When the position/adjustment screws are used, the minimum spacing between adjacent stop positions can be as small as 1/16-inch between positions.
  • Accurate and repeatable positioning is achieved by the rigidity of the stop dog mechanism and a torsional lock tab that prevents lateral movement.
  • The basic MGS-20 contains 2 pair of position stop dogs. Additional pairs of stop dogs may be ordered separately and added to the MGS-20 for up to 12 total positions (6 each side).
 Centering Plates and Torsional Tabs
Rigidity and Repeatability
With a tool as precise as the Domino tenon joiner, it is critical that mortise positioning be accurate every time. Every aspect of the MGS-20 was driven by rigidity and repeatability as the goal.
  • The backstop and Torsion Lock Tab on the Dog Arm assembly creates a torsional lock to prevent sideways deflection of the Dog Arm as you press the workpiece against it.
    • This rigidity eliminates variation from mortise to mortise that other types of position stops can experience when the user applies too much or too little pressure.
    • The dog pivot is loose enough to provide easy rotation, but is held firmly when engaged.
  • Adjustable Centering Plates align the MGS-20 to your Domino for repeatable installation.
    • These centering plates adjust sideways to capture the base of the Domino, ensuring that it is positioned exactly the same every time.
    • This eliminates the need to recalibrate the position stops each time the MGS-20 is installed.