Butt frame and panel¶

from woodwright.examples import frames

design = frames.butt_frame_and_panel(stile_length=625)

stile  500 x 60 x 20 mm  oak, 2 pieces: stile_left, stile_right
       - stopped groove 6 mm, 10 deep, in back_edge, 50 mm short of left_end and 50 mm short of right_end
rail   300 x 60 x 20 mm  oak, 2 pieces: rail_top, rail_bottom
       - groove 6 mm, 10 deep, in back_edge
panel  400 x 320 x 10 mm  oak
       - tongue 6 mm thick, 10 long, on front_edge
       - tongue 6 mm thick, 10 long, on back_edge
       - tongue 6 mm thick, 10 long, on right_end
       - tongue 6 mm thick, 10 long, on left_end

def butt_frame_and_panel(
    stile_length: float = 500,
    rail_length: float = 300,
    width: float = 60,
    tongue_length: float = 10,
    stock: Stock = OAK,
    panel_stock: Stock = THIN_OAK,
) -> Assembly:
    """A frame butt-joined at the corners, a panel tongued on all four edges
    into grooves along its inside edges.

    The panel's design size is the opening of the frame, the tongues add to
    it; it is centered in the frame's thickness. The grooves in the rails
    run through, into those in the stiles, which are stopped where the
    rails' grooves meet them, so that they don't show at the stiles' ends.
    The glued corners hold little (end grain on long grain): a frame for a
    light panel, or one to be screwed or dowelled (not modelled).
    """

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

    asm, (stile_left, stile_right, rail_top, rail_bottom) = _frame(
        "butt_frame_and_panel", corner, stile_length, rail_length, width, stock
    )
    panel = asm.add(Board("panel", panel_stock, length=stile_length - 2 * width, width=rail_length))
    stop = width - tongue_length  # where the rails' grooves end
    for groove, edge, stopped in [
        (
            stile_left.back_edge,
            panel.front_edge,
            {stile_left.left_end: stop, stile_left.right_end: stop},
        ),
        (
            stile_right.front_edge,
            panel.back_edge,
            {stile_right.left_end: stop, stile_right.right_end: stop},
        ),
        (rail_top.back_edge, panel.right_end, None),
        (rail_bottom.front_edge, panel.left_end, None),
    ]:
        asm.join(
            TongueAndGroove(
                tongue=edge,
                groove=groove,
                tongue_length=tongue_length,
                across=CENTERED,
                stopped=stopped,
            )
        )
    return asm