Save time figuring for miter joints and prevent material waste resulting when a miter joint does not fit properly. Exchanging that T-bevel and protractor for the miter gauge demonstrated here will let you measure, calculate and convert angles to miter saw settings, and improve your productivity in a single step. All that is left is cutting the perfect miter.
Place the legs of the adjustable tool against the work angle and read the setting for the miter saw, as indicated by the red arrow. The angle is already converted to the correct setting--in this demo, 38 degrees.
Adjust the miter saw left 38 degrees and cut one side of the miter joint. Readjust the miter saw right to 38 degrees and cut the other side of the joint.
Align the mitered end of the pieces of molding together on top of the corner or outside work angle. They join in a perfect miter joint as determined with the miter gauge.
Open the tool so that it fits into an inside angle and place the legs flat against each wall. In this demonstration, the setting on the miter saw will be 41 degrees.
Set the miter saw to 41 degrees left and cut the first piece of crown molding in the demonstration, then readjust to 41 degrees right for the second piece. Join the pieces for the inside work angle.
Prepare to cut a wide baseboard by measuring the work angle with the tool and then setting the miter saw for a bevel cut at the angle indicated.
Use the tool to measure in corners for single angle cuts like those on the ends of flooring planks. For that purpose, read the setting on the inside scale on the miter gauge.
Choose either the full-size or mini-version of this miter gauge. The smaller version works identically to the first, but is small enough to fit in a back pocket or a tool belt.