Use Test Cuts for Accurate Machine Setups
Check with an accurate square first, but confirm your results with test cuts
Synopsis: David Hyatt offers setups for checking your machine setups, including checking a tablesaw blade for an accurate 90° angle, squareing a tablesaw crosscut sled, setting up a tablesaw for accurate miters, and checking a jointer fence.
Building furniture or other projects with strong, square-fitting joints requires woodworking machines that are set up to make accurate 90° cuts. Checking with an accurate square might seem like all that’s needed, but it’s really just a starting place.
A square won’t register some factors such as variations in the flatness of a tabletop. Some squares aren’t as square as they should be. And, using a square alone, very small errors can be hard to see. The following test cuts can finish the job that the square started, making errors more visible by multiplying them.
Tablesaw: Square the blade and miter gauge
A very reliable way to check a tablesaw blade…