The Domino as a morticer

A while back I began using a DW500 for loose tenon joinery. That is, requiring mortices wider than the standard dominos. Looking for a way to mark these accurately, I used this little marker to build 10mm wide mortices for a bed rail ...


https://i.postimg.cc/y6jnWjJY/3.jpg


Marke the one side, then the other, and clean up the centre ...


https://i.postimg.cc/NFs4p9nc/2.jpg


https://i.postimg.cc/vHmhnn97/4.jpg


Marking accurately is even more important when you make through mortices, which are routed from each side, and especially when in curved chair legs ...


https://i.postimg.cc/SxkLpkc6/Legs5.jpg


https://i.postimg.cc/pTNXcJP2/New2.jpg


I came up with a new marker, which is much easier to use. This is simply a clear saddle square ...


https://i.postimg.cc/8zGb1RPc/6.jpg


This will do 6mm, 8mm and 10mm mortices.


Note that a 6mm domino is 20mm wide, the 8mm is 22mm wide, and the 10mm is 24mm wide. The centre marks the spot.


As we know, the mid point of a Domino mortice is aligned so ...


https://i.postimg.cc/CdTzss6q/2.jpg


Start by marking the outer boundaries of the mortice ...


https://i.postimg.cc/NjxkLK54/3.jpg


Set the left side of the marker on the left end of the mortice (A) and then mark the centre of the domino cut (B).


https://i.postimg.cc/HsX2DZmF/4.jpg


Repeat at the other end ...


https://i.postimg.cc/KcdNWX6n/5.jpg


Now domino the mortice ...


https://i.postimg.cc/wxt2FxGq/1.jpg


Regards from Perth


Derek