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Candy Coffin Calculator

Standish WoodStory · Candy Coffin · v3 with cut coach

Cut list for any tip-to-toe length

Enter the overall length you want. Every outer face scales from the plan, and the short edges follow from stock thickness and the locked mitres. Angle arcs show the mitre saw setting at each corner. Tap a piece or a row — the How to cut coach walks you through each end.

Your coffin

Thickness is the frame border you see in plan. Board width is the third dimension — used only for the stock estimate.

How to cut

Tap a piece in the drawing or a row in the list to see how to cut each end.

Plan view, to scale. Each colour is one kind of piece. Tap a piece to highlight it in the list. Angle numbers are mitre saw settings off square — not the interior corner of the coffin.
QtyPieceLong edgeShort edgeCuts

How the numbers are made

  1. Tip-to-toe length L scales every outer face from the hand plan at 70 cm: foot 15.4, lower sides 45.2 each, upper sides 25.5 each, head 21.
  2. Mitre settings are locked: 41° off square at the head and foot corners, 8° at both waist corners. The exterior turn at each corner is twice the mitre, so the six corners close (360°).
  3. Each piece is a trapezoid. The short (inner) edge is the long edge minus thickness × (tan of each end mitre).
  4. The drawing walks the outer polygon counter-clockwise and offsets inward by thickness. The hand sketch has about a millimetre of walk closure error — the cut list uses the scaled outer lengths; the drawing nudges the last vertex closed.
  5. Board width does not change the plan outline; it only feeds the stock estimate (how much strip to buy).
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