My Domino would not cut a mortise wide enough so I made a jig to accurately overlap two Domino slots. It took quite a bit of trial and error to get the hole spacing on the jig just right.
|The jig served as a reference fence for the Domino|
|The centre line on the jig marked the centre line for the mortise|
|The outside hole on the jig marked the location for Domino pin to cut the first slot|
|First mortise complete|
|The mortise is now complete|
|The walnut tenon fits perfectly|