I happened upon this and thought it pretty neat.
Tex and Bodgy's excellent adventure with a horizontal mortiser. - Woodwork Forums
They way they built it with a very simple sliding table and adjustable stops is pretty ingenious. Coupled with the threaded-rod based height adjustment and the plunge action of the router, I bet it makes for some pretty reproducible mortises with good XYZ control.
Tex and Bodgy's excellent adventure with a horizontal mortiser. - Woodwork Forums
They way they built it with a very simple sliding table and adjustable stops is pretty ingenious. Coupled with the threaded-rod based height adjustment and the plunge action of the router, I bet it makes for some pretty reproducible mortises with good XYZ control.