I've been using a 14" Powermatic band saw for years, but the older I get the more difficult I find the small tensioning knob. After looking at the cost of aftermarket options, I decided to make my own using leftover plywood. I started off with a few pieces of 3⁄4" and 1⁄2" stock, then created a template of the original tensioner knob. Using the template and a pattern bit in my router, I cut out a space for the original knob in one layer of the body. On the top layer I cut a dado to fit the handle at the table saw. Over at the band saw I cut out the hole in the base for the tensioning shaft. Next I made the handle and rounded off the edges. The cutouts allowed me to screw together the new tensioner right over the original knob.