Way back when I still had some memory left, and could remember which step I was at, I used to do a lot of those spacer, cut it, stop here, and insert there, kind of work arounds. Now I have got a really good dado blade, and one of these.
Thing even tells me which parts, and pieces of the Dado set to use to build it up to the correct width. The only figuring I need to do is where I want to stick the Dado. I guess I swapped memory for $$$$$. :-)
I saw your kerfmaker, and everyone should have something like it though.
