There has been much discussion on the Bridge City Kerfmaker, but I didn’t find where it was used on a table saw without using a sled with a stop. I am sure I just missed it, but here is my version of the set-up.
The Kerfmaker references off a stop on a fence, which works very well for a fence on a radial arm saw or table saw sled. But using the table saw fence to cut slots for my box bottoms and lids, I discovered there was not reference point for the Kerfmaker. I made a simple block using magnets to secure it. There is a lip on the bottom to keep it straight on the table saw rail. I started with 2 magnets, but it didn’t hold as well as I wanted, so I added 2 more. Stronger magnets would work as well, but these were what I had. I tried it with a c-clamp, but if you have checked out my jigs, you know I don’t like messing with c-clamps on my jigs.
Set the fence for the first cut and place the kermaker on the rail and place the stop next to it, carefully keeping it free from chips and squared with the rail. The lip on my block is made to fit between the rail and the saw to help do this. Make the first cut, flip the kerfmaker as usual, move the fence, and make the second cut. Then saw out the waste between as usual. I am not going into detail of using your kerfmaker. If you have one you should know the basics already. That has been covered here on Ljs and on Bridge Ciy’s website.
I think the pictures are self-explanatory, but ask if you have questions.