Q:
I’m learning to cut mortise-and-tenon joints by hand, but I only have a marking gauge with one cutter. How can I use it to lay out the joint accurately?
Ismael Salazar, Schaumberg, IL
A:
You don’t need a two-cutter mortising gauge to lay out this joint. Just mark the two sides of the mortise and tenon one at a time, and be sure to lay out all the lines using the same face of your parts as a reference. That way, the joints will align perfectly even if your stock thickness varies slightly. Although it might seem intuitive to set your marks from each side to ensure a centered tenon, it is more accurate to mark all lines from the same face.
![](https://images.finewoodworking.com/app/uploads/2011/04/20105033/qa_219_4-700x387.jpg)
![](https://images.finewoodworking.com/app/uploads/2011/04/20105321/qa_219_5-700x623.jpg)
![](https://images.finewoodworking.com/app/uploads/2011/04/20105402/qa_219_7-700x465.jpg)
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