The problem with any featherboard is having to adjust its position for the proper pressure on a workpiece. This featherboard does this task for you. It’s made from a spring hinge used on storm doors. (Some spring hinges have a mechanism for adjusting the tension.)
This featherboard starts with a thick base block fastened to a runner that fits in the miter slot of your table saw. The “featherboard” is mitered at one end and rounded over at the end that makes contact with the workpiece. This allows the featherboard to maintain contact with the workpiece at a wide range of angles. (You may need to adjust the length to fit your saw.)
I added a piece of self-adhesive sandpaper to give it a little extra grip to reduce the chance of kickback. Finally, attach the spring hinge to connect the featherboard to the base.