Specialty Joinery & Cabinetmaking Calculators
Interactive geometric calculators with live CAD blueprints, reference charts, and printable shop cut-lists for tambour doors, Japanese Shoji & Kumiko grids, curved kerf bending, and unequal miter joints.
Tambour Door Slat Width & Track Radius Calculator (mm & inches)
Calculate exact maximum slat width, minimum router track curve radius, total slat count, and canvas backing dimensions for rolling tambour cabinet doors without binding.
Shoji Screen & Kumiko Grid Pitch Calculator (Notch Spacing & Mitsuke)
Calculate exact Kumiko strip spacing, clear cell opening, half-lap notch pitch (ai-kaki), aspect ratio, and lineal stock for Japanese Shoji doors and Kumiko grids.
Wood Kerf Bending Cut Spacing & Radius Calculator (Plywood & Hardwood)
Calculate exact center-to-center saw kerf spacing, number of relief cuts, cut depth, and outer arc length to bend plywood or solid wood around any radius curve.
Unequal Width Miter Joint Angle Calculator (Different Board Widths)
Calculate the two exact complementary miter saw angles when joining two boards, trim moldings, or picture frame rails of different widths at a 90 degree or custom corner.
Kumiko Asanoha Pattern Strip Length & Bevel Jig Calculator
Calculate exact infill piece lengths, 45, 22.5, and 67.5 degree bevel block setups, piece counts, and total strip stock for traditional Asanoha Kumiko panels.
Precision Geometry for Fine Cabinetmaking & Joinery
Unlike general construction carpentry, specialty furniture joinery—such as routing curved tracks for rolling tambour doors, indexing half-lap notches (ai-kaki) for Japanese Shoji screens, or kerf-bending Baltic birch plywood—depends on exact chord, arc, and trigonometric tolerances. Even a 0.5mm cumulative layout error across twenty Kumiko strips or tambour slats can cause a door to bind or a frame joint to gap. Every calculator on JoineryBench combines instant client-side math with live SVG technical diagrams and workshop reference tables.