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Tongue

cuts.tongue

A tongue along an edge; the board grows by its length.

Tongue, assembled

Parameters

Parameter Default
length 10
thickness 12
stock 40 mm board, oak

Change them in a design file (see Change an example):

from woodwright.examples import cuts

design = cuts.tongue(length=12.5)

Drawings

The plans in one PDF: plans.pdf.

Board

board

Cut list

board  600 x 160 x 40 mm  oak
       - tongue 12 mm thick, 10 long, on back_edge

Code

From woodwright/examples/cuts.py, which imports the names it uses (see From an example to your own design):

def tongue(length: float = 10, thickness: float = 12, stock: Stock = THICK_OAK) -> Assembly:
    """A tongue along an edge; the board grows by its length."""
    asm, board = _board("tongue", stock, width=150)
    board.cut(Tongue(board.back_edge, length=length, thickness=thickness))
    return asm

Exported with woodwright 0.9.0 on 2026-10-25.