Build your own wooden contour gauge using these free instructions with pictures. A contour gauge is handy to have when you need to quickly measure and duplicate uneven surfaces. It will record an irregular shape which you can then transfer the profile to your wood.
Build a finger joint jig using the free step-by-step tutorial at the link. There is also a video you can watch if you need extra help.
Follow along with the step-by-step instructions, pictures and video to make your own star knob jig.
Build the worlds simplest box joint jig using these free step-by-step instructions.
Follow along at the link and you will be able to sharpen wood chisels, plane blades, turning gouges, and more using your drill press and this sharpening jig.
Follow along at the link and watch the video to build your own circular saw cross cut jig.
If you are building something that requires a lot of dowels the same size, you should build this dowel cutting jig first. It also helps prevent tearout.
This crosscut guide is for cutting down larger sheets of plywood into more manageable sizes using a circular saw. Here is how to build it.
This diagonal measuring jig is easy to build using scrap wood and will help you when you are trying to measure on the diagonal.