In the first picture you can see the kerf I made along one edge of a board.
Tom Fidgen adapted his to have an adjustable fence, and that is of course useful. Mine is set to slightly more than 3 mm and that is fine for uke body material, but a bit thin for fretboards.
Here you can see how I rip the board after putting a kerf around all edges.
Believe it or not, but this rip saw has been subject to ridicule from my daughter Li. I can't see why.