It is really simple. And as good as the domiplate is I do mot think it would really apply here, so save your money and try this. Mark reference lines at the intersection of the mating pieces. Now mark where the dominos are to be set. Remember that from the bottom of the domino machine the distance to the centerline of the cutter can never change. This is a constant value. Where you have marked for the domino placement will aid in the proper referencing of the domino cutter. For instance on the side piece to the cross piece you will have a line drawn across the side piece. Also you will most likely have a mark for where you need the domino. Extend the mark for the domino so you can see it while the fence is totally retracted out of the way. Now clamp a piece of straight edge onto your reference line. This is what you set the bottom of the domino unit on. Now plunge to proper depth. Now set your cross piece onto your bench. The fence on the domino may now be set to the 90 degree position. Now line up your mark and plunge to proper depth into the end grain. Assemble the pieces and check for proper alignment. This will take some practice but once you get the principle you will find it accurate and very cost effective as well. I do this all the time and so far the centerline of the cutter distance to the bottom of the domino machine has remained constant. And how many things in life can you say that about?
