Building my first kerfmaker has opened up an awesome door in my shop. I have used it for quite a few projects and think it is one of the most simple, useful, and easy jigs to make. I have taken the same approach with stop blocks lately. With a kerfmaker stop block you can make a perfect halflap or dado joint in the middle of your work piece without ever measuring. Here’s a link to the article on my site with two videos showing it. Precision is so easy!
-- Jay - http://www.jayscustomcreations.com