up the jig is fairly simple. First clamp the jig to your fence (Fig. 1).
Then mark the dado locations on the workpiece (Detail a) and position it
against your fence so that the dado blade aligns perfectly with the inside
shoulder of the dado (Figs. 1 and 1a). Now, before making any cuts, reposition
the workpiece and adjust the hardboard stop so that it aligns perfectly with the
outside shoulder of the dado.
Once the jig is set up, you're ready to put it into action. Make the first cut
with the end of your board butted against the fence to define the inside
shoulder of the dado.
To make the second cut, slide the board away from the blade and butt the same
end against the hardboard stop. This defines the outside shoulder of the
dado. To complete the dado, simply clear away the waste between the two shoulder