Kerfmaker Ultimate for Table Saw (Tenonmaker)

thingiverse

This is a kerf maker. A tool that simplifies the process of cutting kerfs into wood when used with a table saw. Especially helpful for repeatedly cutting kerfs of the same size. There are many kerf-makers available here on Thingiverse, most with a similar design. One maker refers to "the real McCoy" as the source of inspiration, but I found a commercially available one from Bridge City, known as KM-1 or KM-2. These designs are sleek and cleverly constructed, but there is room for improvement: after the first cut you have to turn the kerfmaker 180°, then do the second and subsequent cuts. I chose a design that utilizes a long handle which makes it very easy to grab and turn the kerfmaker. What you need: • all five parts printed • 1 x M6 threaded bar, 57 mm length • 1 x M6 threaded bar, 33 mm length • 2 x M6 nut • 1 x M6 self-locking hex nut If you want to make bigger kerfs, print the "EXTRA WIDE" base and sliding block. You'll then have a maximum kerf width of about 63mm. How to assemble: • Put a hex nut into the hole on the flipside of the sliding block. Glue it in place if necessary. • Glue a hex nut into one hole of the small knob and a self-locking hex nut into the other one. NB1: The holes have different depths to accommodate the different heights of a normal nut and a self-locking nut (which is usually higher). NB2: The self-locking nuts have a job, namely to lock on the threaded bar. While we do want friction, it might be necessary to get the threaded bar more free-moving by removing some plastic from the inside of the self-locking nut. You will have to experiment. • Glue the 57 mm threaded bar into the blade distance piece. • Lay the base on a table and put the small knob into the base. I recommend letting the normal nut face the blade distance piece, less of the threaded bar to screw through the self-locking nut. • Stick the blade distance piece's threaded bar through the hole and start screwing it into the small knob. Go on till you come to the end, then stop. • Glue the 33 mm threaded bar into the big knob (handle). Take care that the threaded bar is sticking out 19mm. • Join the sliding block with the base using the big knob (handle). Done! You can see my Kerfmaker How-to video on YouTube.