How to Tune a Table Saw to Rip 45 Degrees

Locate the bevel adjustment wheel. Loosen the lock down knob located in the center of the wheel by turning it counterclockwise until the wheel turns freely. Decide whether you intend to cut your bevel to the left or right. Most blades will tilt either way.

Turn the wheel until the arrow indicator is aligned with the 45 degree mark on the miter gauge around the bevel adjustment wheel. If your saw is freshly tuned, this will be all there is to it; if not ,check the tilt of the blade and fine tune the adjustment.

Place a rafter square on the table, with the 45-degree bevel aligned to the table saw blade. Slide the square up to the side of the blade until the blade is resting on its top edge. If the teeth of the blade hit the square first, turn the wheel back until the blade rests evenly on the square. If the square hits the center of the blade, turn the wheel further in the original direction, until the teeth make contact and the blade rests evenly.

Twist the lock knob in the center of the bevel adjustment wheel clockwise to lock the blade in position. Use a screwdriver, or allen wrench, depending on the saw, to release the tune setting, typically located behind the miter gauge. Shift the gauge right or left until the indicator is precisely aligned with the 45-degree mark on the miter gauge and tighten the set screw to complete the task.