Compound miter calculator
Saw miter and blade-tilt angles for assembling N tapered sides into a sloped vessel — sloped boxes, hopper joints, planters, crown molding installed at an angle.
Saw miter: 44.007°
Blade tilt: 10.545°
The formula
tan(M) = cos(slope) × tan(180°/N); sin(T) = sin(slope) × cos(180°/N). Slope = 0 reduces to a flat polygon miter; the blade tilts further as the sides lean in more steeply.