Miter Angle Calculator
Miter Angle
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Corner Angle
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Table Saw Blade Angle
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Calculating Miter Angles for Polygon Joints
Miter angle = half the interior angle. Interior angle = (n-2) x 180 / n. Hexagon: 120 degrees interior, 60 degrees miter.
Table saw blade angle = 90 minus miter angle. For 45 degree miter, set blade to 45. For hexagon 60 degree miter, blade at 30.
For non-regular polygons, enter the desired corner angle directly. The miter is always half the corner angle.
Frequently Asked Questions
Miter for picture frame?
45 degrees. Rectangle interior angle is 90 degrees, miter is half = 45 degrees.
Hexagon miter?
Interior angle 120 degrees, miter 60 degrees. Set miter saw to 60 or table saw blade to 30.
Why do joints have gaps?
Inaccurate angles, blade wobble, or boards not flat. Use digital gauge and test cuts on scrap.
Compound miter angles?
Combine miter (horizontal) with bevel (vertical) for tilted frames or crown molding. Requires trig.