tier-3-butt-hinge / `gpt-5-codex`

5 run / 累計 1153.3s / 累計 $0.9759

openai gpt 5 codex bare

bare (provider default effort)

run detail →

render

loading STL…

success 307.0s · 592/31882t · $0.3196

SCAD (80 lines)

$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}

```openscad
$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}
```

パラメータ (12) —

plate_thickness leaf_length leaf_height knuckle_outer_d knuckle_inner_d pin_d pin_length hole_d countersink_top_d countersink_depth hole_pitch hole_edge_offset

スライダを動かすと openscad-wasm で再レンダリング

prompt

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。

variant: `effort`

lownot run

—

medium (default) success →

307.0s · 592/31882t · $0.3196

SCAD (80 lines)

$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}

highnot run

—

maxnot run

—

xhighnot run

—

iteration: `iter-png`

i1 success →

108.1s · 2018/6080t · $0.0633

diff vs bare: +0/-0

  $fn = 96;
  
  plate_thickness = 2;
  leaf_length = 25;
  leaf_height = 30;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.6;
  knuckle_segment_len = leaf_height / 5;
  pin_d = 4;
  pin_length = 32;
  hole_d = 3.2;
  countersink_top_d = 6;
  countersink_depth = 1;
  hole_pitch = 8;
  hole_edge_offset = 7;
  
  function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;
  
  module knuckle_shell(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              difference() {
                  cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                  cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
              }
  }
  
  module knuckle_clearance(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
  }
  
  module pin_channel() {
      rotate([90, 0, 0])
          cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
  }
  
  module countersunk_hole(pos) {
      union() {
          translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
              cylinder(h = plate_thickness + 0.4, d = hole_d);
          translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
              cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
      }
  }
  
  module leaf(side = "left") {
      indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
      indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
      hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
      hole_positions_y = [-hole_pitch, 0, hole_pitch];
  
      difference() {
          union() {
              translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                  cube([leaf_length, leaf_height, plate_thickness]);
              for (idx = indices_self)
                  knuckle_shell(idx);
          }
          union() {
              for (idx = indices_other)
                  knuckle_clearance(idx);
              pin_channel();
              for (ypos = hole_positions_y)
                  countersunk_hole([hole_x, ypos]);
          }
      }
  }
  
  module hinge_pin() {
      rotate([90, 0, 0])
          cylinder(h = pin_length, d = pin_d, center = true);
  }
  
  union() {
      leaf("left");
      leaf("right");
      hinge_pin();
  }

SCAD (80 lines)

$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}

i2 success →

239.8s · 2018/12640t · $0.1289

diff vs i1: +0/-0

  $fn = 96;
  
  plate_thickness = 2;
  leaf_length = 25;
  leaf_height = 30;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.6;
  knuckle_segment_len = leaf_height / 5;
  pin_d = 4;
  pin_length = 32;
  hole_d = 3.2;
  countersink_top_d = 6;
  countersink_depth = 1;
  hole_pitch = 8;
  hole_edge_offset = 7;
  
  function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;
  
  module knuckle_shell(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              difference() {
                  cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                  cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
              }
  }
  
  module knuckle_clearance(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
  }
  
  module pin_channel() {
      rotate([90, 0, 0])
          cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
  }
  
  module countersunk_hole(pos) {
      union() {
          translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
              cylinder(h = plate_thickness + 0.4, d = hole_d);
          translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
              cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
      }
  }
  
  module leaf(side = "left") {
      indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
      indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
      hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
      hole_positions_y = [-hole_pitch, 0, hole_pitch];
  
      difference() {
          union() {
              translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                  cube([leaf_length, leaf_height, plate_thickness]);
              for (idx = indices_self)
                  knuckle_shell(idx);
          }
          union() {
              for (idx = indices_other)
                  knuckle_clearance(idx);
              pin_channel();
              for (ypos = hole_positions_y)
                  countersunk_hole([hole_x, ypos]);
          }
      }
  }
  
  module hinge_pin() {
      rotate([90, 0, 0])
          cylinder(h = pin_length, d = pin_d, center = true);
  }
  
  union() {
      leaf("left");
      leaf("right");
      hinge_pin();
  }

SCAD (80 lines)

$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}

i3 success →

191.4s · 2018/14205t · $0.1446

diff vs i2: +0/-0

  $fn = 96;
  
  plate_thickness = 2;
  leaf_length = 25;
  leaf_height = 30;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.6;
  knuckle_segment_len = leaf_height / 5;
  pin_d = 4;
  pin_length = 32;
  hole_d = 3.2;
  countersink_top_d = 6;
  countersink_depth = 1;
  hole_pitch = 8;
  hole_edge_offset = 7;
  
  function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;
  
  module knuckle_shell(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              difference() {
                  cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                  cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
              }
  }
  
  module knuckle_clearance(idx) {
      translate([0, knuckle_center(idx), 0])
          rotate([90, 0, 0])
              cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
  }
  
  module pin_channel() {
      rotate([90, 0, 0])
          cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
  }
  
  module countersunk_hole(pos) {
      union() {
          translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
              cylinder(h = plate_thickness + 0.4, d = hole_d);
          translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
              cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
      }
  }
  
  module leaf(side = "left") {
      indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
      indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
      hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
      hole_positions_y = [-hole_pitch, 0, hole_pitch];
  
      difference() {
          union() {
              translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                  cube([leaf_length, leaf_height, plate_thickness]);
              for (idx = indices_self)
                  knuckle_shell(idx);
          }
          union() {
              for (idx = indices_other)
                  knuckle_clearance(idx);
              pin_channel();
              for (ypos = hole_positions_y)
                  countersunk_hole([hole_x, ypos]);
          }
      }
  }
  
  module hinge_pin() {
      rotate([90, 0, 0])
          cylinder(h = pin_length, d = pin_d, center = true);
  }
  
  union() {
      leaf("left");
      leaf("right");
      hinge_pin();
  }

SCAD (80 lines)

$fn = 96;

plate_thickness = 2;
leaf_length = 25;
leaf_height = 30;
knuckle_outer_d = 8;
knuckle_inner_d = 4.6;
knuckle_segment_len = leaf_height / 5;
pin_d = 4;
pin_length = 32;
hole_d = 3.2;
countersink_top_d = 6;
countersink_depth = 1;
hole_pitch = 8;
hole_edge_offset = 7;

function knuckle_center(idx) = -leaf_height / 2 + (idx + 0.5) * knuckle_segment_len;

module knuckle_shell(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            difference() {
                cylinder(h = knuckle_segment_len, d = knuckle_outer_d, center = true);
                cylinder(h = knuckle_segment_len + 0.2, d = knuckle_inner_d, center = true);
            }
}

module knuckle_clearance(idx) {
    translate([0, knuckle_center(idx), 0])
        rotate([90, 0, 0])
            cylinder(h = knuckle_segment_len + 0.2, d = knuckle_outer_d, center = true);
}

module pin_channel() {
    rotate([90, 0, 0])
        cylinder(h = leaf_height + 0.4, d = knuckle_inner_d, center = true);
}

module countersunk_hole(pos) {
    union() {
        translate([pos[0], pos[1], -plate_thickness / 2 - 0.2])
            cylinder(h = plate_thickness + 0.4, d = hole_d);
        translate([pos[0], pos[1], plate_thickness / 2 - countersink_depth])
            cylinder(h = countersink_depth, r1 = hole_d / 2, r2 = countersink_top_d / 2);
    }
}

module leaf(side = "left") {
    indices_self = (side == "left") ? [0, 2, 4] : [1, 3];
    indices_other = (side == "left") ? [1, 3] : [0, 2, 4];
    hole_x = (side == "left") ? (-leaf_length + hole_edge_offset) : (leaf_length - hole_edge_offset);
    hole_positions_y = [-hole_pitch, 0, hole_pitch];

    difference() {
        union() {
            translate([(side == "left") ? -leaf_length : 0, -leaf_height / 2, -plate_thickness / 2])
                cube([leaf_length, leaf_height, plate_thickness]);
            for (idx = indices_self)
                knuckle_shell(idx);
        }
        union() {
            for (idx = indices_other)
                knuckle_clearance(idx);
            pin_channel();
            for (ypos = hole_positions_y)
                countersunk_hole([hole_x, ypos]);
        }
    }
}

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

union() {
    leaf("left");
    leaf("right");
    hinge_pin();
}

tier-3-butt-hinge / gpt-5-codex

prompt

variant: effort

iteration: iter-png

tier-3-butt-hinge / `gpt-5-codex`

variant: `effort`

iteration: `iter-png`