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Bridle frame

frames.bridle_frame

A frame with bridle joints at the corners.

Bridle frame, assembled

Bridle frame, exploded

Parameters

Parameter Default
stile_length 400
rail_length 250
width 50
stock 20 mm board, oak

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

from woodwright.examples import frames

design = frames.bridle_frame(stile_length=500)

Drawings

The plans in one PDF: plans.pdf.

Assembly

assembly

Parts

parts

Rail

rail

Stile

stile

Cut list

stile  400 x 50 x 20 mm  oak, 2 pieces: stile_left, stile_right
       - slot mortise 8 mm, 50 deep, in right_end
       - slot mortise 8 mm, 50 deep, in left_end
rail   350 x 50 x 20 mm  oak, 2 pieces: rail_top, rail_bottom
       - tenon 8 mm thick, 50 long, on left_end
       - tenon 8 mm thick, 50 long, on right_end

Code

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

def bridle_frame(
    stile_length: float = 400,
    rail_length: float = 250,
    width: float = 50,
    stock: Stock = OAK,
) -> Assembly:
    """A frame with bridle joints at the corners."""

    def corner(rail_end: SideRef, stile_edge: SideRef, position: Position, outer: SideRef) -> Joint:
        return Bridle(tenon=rail_end, slot=stile_edge, position=position)

    asm, _ = _frame("bridle_frame", corner, stile_length, rail_length, width, stock)
    return asm

Exported with woodwright 0.9.0 on 2026-10-25.