When it comes to accurate tapers, it’s tough to beat the table saw. The only drawback is that it requires a jig, or sled, to carry the workpiece through the blade at the proper angle. One of the simplest approaches is the sled you see here.
It’s just a base that rides between the blade and rip fence. Three support blocks secure the workpiece at the proper angle. To set up and use the sled, start by marking each end of the taper on the workpiece. Align the marks with the edge of the base, and press it firmly in place over strips of double-sided tape. Then add the support blocks to the front, back, and side of the workpiece with screws.
Now all that’s left is to position the rip fence so the edge of the sled is even with the blade. A glue line rip blade leaves a smooth surface. So it only takes a few passes with some sandpaper for a clean, smooth taper.