Mortise Rail MR4
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Mortise Rail MR4

The MR4 takes mortising on the WoodRat to new levels of speed, accuracy and versatility. 

A precision engineered, aluminium trough holds multiple pieces, solid and square - ready to be cut in any way you wish. Accurate, repeatable mortices are now a easier than ever. And (being WoodRat) there's more. . .


  • Heavy duty aluminium extrusion
  • Generous 90mm trough holds several pieces
  • Fits in seconds using the holes for the fences
  • Holds long and heavy pieces
  • Can be mounted upside down to support a table for routing boards flat
  • There are stops to control your cuts - their length, width and position


  • Pieces can be morticed, grooved, drilled and even tenoned.
  • Work can be tracked the entire 900mm of the WoodRat's length!
  • The complex job of cutting multiple, matching mortises in several pieces is now made easy

Going Large

By cutting from both sides you can now produce mortises up to 5" deep. Add a simple shop made table and you can easily cut 5" tenons to match. Ideal for making room height panelled doors or a five bar gate. 

Note: The Mortise Rail is available in 870mm and 600mm lengths. The Longer for the WR900 and the shorter one is for the discontinued WR600.