bare-high/gpt-5.5 / tier-3-butt-hinge

success tier 3

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SCAD (106 lines)

$fn = 96;

leaf_y = 30;
leaf_x = 25;
leaf_t = 2;

pin_d = 4;
pin_len = 32;

knuckle_od = 8;
knuckle_id = 4.6;
knuckle_r = knuckle_od / 2;
seg = leaf_y / 5;

root_overlap = 0.25;

hole_d = 3.2;
csk_d = 6;
csk_depth = 1;
screw_edge_margin = 7;
screw_ys = [-8, 0, 8];

eps = 0.02;

function seg_y(i) =
    -leaf_y / 2 + seg / 2 + i * seg;

function plate_outer_x(side) =
    side < 0 ? -(knuckle_r + leaf_x) : (knuckle_r + leaf_x);

function screw_x(side) =
    side < 0
        ? plate_outer_x(side) + screw_edge_margin
        : plate_outer_x(side) - screw_edge_margin;

module screw_cut(x, y) {
    translate([x, y, 0])
        cylinder(h = leaf_t + 2 * eps, d = hole_d, center = true);

    translate([x, y, leaf_t / 2 - csk_depth])
        cylinder(h = csk_depth, d1 = hole_d, d2 = csk_d, center = false);

    translate([x, y, leaf_t / 2 - eps])
        cylinder(h = 2 * eps, d = csk_d, center = false);
}

module knuckle_segment(yc) {
    translate([0, yc, 0])
        rotate([-90, 0, 0])
            difference() {
                cylinder(h = seg, d = knuckle_od, center = true);
                cylinder(h = seg + 2 * eps, d = knuckle_id, center = true);
            }
}

module flat_plate(side) {
    if (side < 0) {
        translate([-knuckle_r - leaf_x, -leaf_y / 2, -leaf_t / 2])
            cube([leaf_x, leaf_y, leaf_t]);
    } else {
        translate([knuckle_r, -leaf_y / 2, -leaf_t / 2])
            cube([leaf_x, leaf_y, leaf_t]);
    }
}

module knuckle_root(side, yc) {
    if (side < 0) {
        translate([-knuckle_r, yc - seg / 2, -leaf_t / 2])
            cube([root_overlap, seg, leaf_t]);
    } else {
        translate([knuckle_r - root_overlap, yc - seg / 2, -leaf_t / 2])
            cube([root_overlap, seg, leaf_t]);
    }
}

module hinge_leaf(side) {
    ids = side < 0 ? [0, 2, 4] : [1, 3];

    difference() {
        union() {
            flat_plate(side);

            for (i = ids) {
                knuckle_root(side, seg_y(i));
                knuckle_segment(seg_y(i));
            }
        }

        for (yy = screw_ys)
            screw_cut(screw_x(side), yy);
    }
}

module hinge_pin() {
    rotate([-90, 0, 0])
        cylinder(h = pin_len, d = pin_d, center = true);
}

color([0.55, 0.57, 0.60])
    hinge_leaf(-1);

color([0.48, 0.50, 0.53])
    hinge_leaf(1);

color([0.12, 0.12, 0.12])
    hinge_pin();

```openscad
$fn = 96;

leaf_y = 30;
leaf_x = 25;
leaf_t = 2;

pin_d = 4;
pin_len = 32;

knuckle_od = 8;
knuckle_id = 4.6;
knuckle_r = knuckle_od / 2;
seg = leaf_y / 5;

root_overlap = 0.25;

hole_d = 3.2;
csk_d = 6;
csk_depth = 1;
screw_edge_margin = 7;
screw_ys = [-8, 0, 8];

eps = 0.02;

function seg_y(i) =
    -leaf_y / 2 + seg / 2 + i * seg;

function plate_outer_x(side) =
    side < 0 ? -(knuckle_r + leaf_x) : (knuckle_r + leaf_x);

function screw_x(side) =
    side < 0
        ? plate_outer_x(side) + screw_edge_margin
        : plate_outer_x(side) - screw_edge_margin;

module screw_cut(x, y) {
    translate([x, y, 0])
        cylinder(h = leaf_t + 2 * eps, d = hole_d, center = true);

    translate([x, y, leaf_t / 2 - csk_depth])
        cylinder(h = csk_depth, d1 = hole_d, d2 = csk_d, center = false);

    translate([x, y, leaf_t / 2 - eps])
        cylinder(h = 2 * eps, d = csk_d, center = false);
}

module knuckle_segment(yc) {
    translate([0, yc, 0])
        rotate([-90, 0, 0])
            difference() {
                cylinder(h = seg, d = knuckle_od, center = true);
                cylinder(h = seg + 2 * eps, d = knuckle_id, center = true);
            }
}

module flat_plate(side) {
    if (side < 0) {
        translate([-knuckle_r - leaf_x, -leaf_y / 2, -leaf_t / 2])
            cube([leaf_x, leaf_y, leaf_t]);
    } else {
        translate([knuckle_r, -leaf_y / 2, -leaf_t / 2])
            cube([leaf_x, leaf_y, leaf_t]);
    }
}

module knuckle_root(side, yc) {
    if (side < 0) {
        translate([-knuckle_r, yc - seg / 2, -leaf_t / 2])
            cube([root_overlap, seg, leaf_t]);
    } else {
        translate([knuckle_r - root_overlap, yc - seg / 2, -leaf_t / 2])
            cube([root_overlap, seg, leaf_t]);
    }
}

module hinge_leaf(side) {
    ids = side < 0 ? [0, 2, 4] : [1, 3];

    difference() {
        union() {
            flat_plate(side);

            for (i = ids) {
                knuckle_root(side, seg_y(i));
                knuckle_segment(seg_y(i));
            }
        }

        for (yy = screw_ys)
            screw_cut(screw_x(side), yy);
    }
}

module hinge_pin() {
    rotate([-90, 0, 0])
        cylinder(h = pin_len, d = pin_d, center = true);
}

color([0.55, 0.57, 0.60])
    hinge_leaf(-1);

color([0.48, 0.50, 0.53])
    hinge_leaf(1);

color([0.12, 0.12, 0.12])
    hinge_pin();
```

パラメータ (13) —

leaf_y leaf_x leaf_t pin_d pin_len knuckle_od knuckle_id root_overlap hole_d csk_d csk_depth screw_edge_margin eps

スライダを動かすと openscad-wasm で再レンダリング

runId	`bare-high_gpt-5.5-a6ba99f94538-2026-04-28T17-30-54-528Z`
matrixId	`bare-high/gpt-5.5`
signature	`a6ba99f945387efa…`
provider	openai
model	gpt-5.5-2026-04-23
harness	bare
status	success
duration	250.37s (wallclock: load + prompt eval + generation + network)
tokens	592 in / 13182 out
wallclock tok/s	52.7 tok/s (end-to-end)
cost	$0.1326
createdAt	2026-04-28T17:30:54.528Z
gitCommit	`be87c9f2adaf`
openscad	OpenSCAD version 2026.04.27

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OpenSCAD で、家具用の小型バット蝶番(butt hinge)を作ってください。
3 つのパーツ(左板、右板、ピン軸)が組み合わさって動作する完成品を、
「開いた状態(180°)」で 1 つの SCAD ファイルに配置して出力します。

寸法と配置:
- 板(leaf)2 枚: 30mm × 25mm × 厚さ 2mm の鉄板形状
  - 縦 30mm の辺がピン軸に沿う(ヒンジ軸方向)
  - 横 25mm の辺が回転で開く方向に伸びる
- ピン軸: 直径 4mm の円柱、長さ 32mm(両端 1mm ずつ knuckle から飛び出す)
- knuckle(筒部): 縦 30mm を 5 等分(各 6mm)に区切り、左板に 3 個・右板に 2 個を
  互い違いに配置(左板は外側 2 個 + 中央 1 個、右板は中間 2 個)
- knuckle 外径 8mm、内径はピン軸 + 0.3mm クリアランス(= 4.6mm 穴)
- 左板と右板はピン軸を共有して回転可能。180° 開いた状態で、両板の
  平らな面が同一平面に来るように配置する
- 各板の knuckle から離れた側に、M3 用の皿穴を 3 個ずつ
  (穴ピッチは板の縦方向に 8mm 間隔、皿穴は表面から見て直径 6mm × 深さ 1mm
  のテーパ + 直径 3.2mm の貫通穴)

座標系:
- ピン軸の中心線を Y 軸に重ねる(ピン軸は +Y 方向)
- 板の平らな面は Z 軸に直交し、左板が x<0 側、右板が x>0 側に伸びる(180° 開)
- knuckle は X=0 を中心とし、Y 方向に 6mm ずつ並ぶ

完成したコード全体を ```openscad ... ``` のフェンスで囲んで出力してください。
コードのみで、追加の説明は不要です。

bare-high/gpt-5.5 / tier-3-butt-hinge

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