tier-3-butt-hinge / `gemini-3.1-flash-lite-preview`

6 run / 累計 27.7s / 累計 $0.0027

gemini flash-lite 3.1 preview bare

bare (provider default effort)

run detail →

render

loading STL…

success 3.4s · 515/642t · $0.0003

SCAD (57 lines)

// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module hinge() {
    // Left Leaf (x < 0)
    difference() {
        union() {
            translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [0:2:4]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([-10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Right Leaf (x > 0)
    difference() {
        union() {
            translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [1:2:3]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 60;
hinge();

```openscad
// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module hinge() {
    // Left Leaf (x < 0)
    difference() {
        union() {
            translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [0:2:4]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([-10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Right Leaf (x > 0)
    difference() {
        union() {
            translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [1:2:3]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 60;
hinge();
```

パラメータ (9) —

leaf_w leaf_h leaf_t knuckle_outer_d knuckle_inner_d pin_d pin_l knuckle_count hole_dist

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: `thinking`

off success →

3.9s · 515/863t · $0.0004

SCAD (74 lines)

// パラメータ設定
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
pin_dia = 4;
clearance = 0.3;
hole_dia = 3.2;
knuckle_od = 8;
knuckle_id = pin_dia + clearance;
knuckle_h = 6;
num_segments = 5;

// メインモデル
union() {
    // 左板
    color("silver")
    difference() {
        union() {
            translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            // Knuckle (左板: 外側2個 + 中央1個 -> 0, 2, 4番目)
            for (i = [0, 2, 4]) {
                translate([0, -leaf_h/2 + i * knuckle_h + knuckle_h/2, 0])
                rotate([-90, 0, 0])
                cylinder(d = knuckle_od, h = knuckle_h, center = true);
            }
        }
        // 貫通穴
        for (i = [0, 2, 4]) {
            translate([0, -leaf_h/2 + i * knuckle_h + knuckle_h/2, 0])
            rotate([-90, 0, 0])
            cylinder(d = knuckle_id, h = knuckle_h + 0.1, center = true);
        }
        // 皿穴と貫通穴 (左板)
        for (i = [-1, 0, 1]) {
            translate([-leaf_w/2, i * 8, -1]) {
                cylinder(d = 3.2, h = 4);
                cylinder(d1 = 6, d2 = 3.2, h = 1);
            }
        }
    }

    // 右板
    color("gray")
    difference() {
        union() {
            translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            // Knuckle (右板: 中間2個 -> 1, 3番目)
            for (i = [1, 3]) {
                translate([0, -leaf_h/2 + i * knuckle_h + knuckle_h/2, 0])
                rotate([-90, 0, 0])
                cylinder(d = knuckle_od, h = knuckle_h, center = true);
            }
        }
        // 貫通穴
        for (i = [1, 3]) {
            translate([0, -leaf_h/2 + i * knuckle_h + knuckle_h/2, 0])
            rotate([-90, 0, 0])
            cylinder(d = knuckle_id, h = knuckle_h + 0.1, center = true);
        }
        // 皿穴と貫通穴 (右板)
        for (i = [-1, 0, 1]) {
            translate([leaf_w/2, i * 8, -1]) {
                cylinder(d = 3.2, h = 4);
                cylinder(d1 = 6, d2 = 3.2, h = 1);
            }
        }
    }

    // ピン軸
    color("lightgray")
    translate([0, 0, 0])
    rotate([-90, 0, 0])
    cylinder(d = pin_dia, h = 32, center = true);
}

adaptivenot run

—

dynamic (default) success →

3.4s · 515/642t · $0.0003

SCAD (57 lines)

// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module hinge() {
    // Left Leaf (x < 0)
    difference() {
        union() {
            translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [0:2:4]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([-10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Right Leaf (x > 0)
    difference() {
        union() {
            translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            for (i = [1:2:3]) {
                rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        // Countersunk holes
        for (i = [-1, 0, 1]) {
            translate([10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 60;
hinge();

iteration: `iter-png`

i1 success →

4.6s · 2289/791t · $0.0005

diff vs bare: +13/-11

  // Parameters
  leaf_w = 25;
  leaf_h = 30;
  leaf_t = 2;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.3;
  pin_d = 4;
  pin_l = 32;
  knuckle_count = 5;
  knuckle_len = leaf_h / knuckle_count; // 6mm
  hole_dist = 8;
  
  module hinge() {
      // Left Leaf (x < 0)
      difference() {
          union() {
              translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
-             for (i = [0:2:4]) {
-                 rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
+             // Left knuckles: index 0, 2, 4
+             for (i = [0, 2, 4]) {
+                 translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
+                 rotate([90, 0, 0]) 
+                 cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
              }
          }
-         // Pin hole
          rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
-         // Countersunk holes
          for (i = [-1, 0, 1]) {
              translate([-10, i * hole_dist, -1]) {
-                 cylinder(d1 = 6, d2 = 3.2, h = 1);
+                 cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                  cylinder(d = 3.2, h = leaf_t + 2);
              }
          }
      }
  
      // Right Leaf (x > 0)
      difference() {
          union() {
              translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
-             for (i = [1:2:3]) {
-                 rotate([90, 0, 0]) cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
+             // Right knuckles: index 1, 3
+             for (i = [1, 3]) {
+                 translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
+                 rotate([90, 0, 0]) 
+                 cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
              }
          }
-         // Pin hole
          rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
-         // Countersunk holes
          for (i = [-1, 0, 1]) {
              translate([10, i * hole_dist, -1]) {
-                 cylinder(d1 = 6, d2 = 3.2, h = 1);
+                 cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                  cylinder(d = 3.2, h = leaf_t + 2);
              }
          }
      }
  
      // Pin
      rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
  }
  
- $fn = 60;
+ $fn = 100;
  hinge();

SCAD (59 lines)

// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module hinge() {
    // Left Leaf (x < 0)
    difference() {
        union() {
            translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            // Left knuckles: index 0, 2, 4
            for (i = [0, 2, 4]) {
                translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                rotate([90, 0, 0]) 
                cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        for (i = [-1, 0, 1]) {
            translate([-10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Right Leaf (x > 0)
    difference() {
        union() {
            translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
            // Right knuckles: index 1, 3
            for (i = [1, 3]) {
                translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                rotate([90, 0, 0]) 
                cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        for (i = [-1, 0, 1]) {
            translate([10, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 100;
hinge();

i2 success →

4.3s · 2362/800t · $0.0006

diff vs i1: +26/-23

  // Parameters
  leaf_w = 25;
  leaf_h = 30;
  leaf_t = 2;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.3;
  pin_d = 4;
  pin_l = 32;
  knuckle_count = 5;
  knuckle_len = leaf_h / knuckle_count; // 6mm
  hole_dist = 8;
  
- module hinge() {
-     // Left Leaf (x < 0)
-     difference() {
-         union() {
-             translate([-leaf_w, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
-             // Left knuckles: index 0, 2, 4
-             for (i = [0, 2, 4]) {
+ module leaf_with_knuckles(is_left) {
+     union() {
+         // Plate
+         // knuckleの端(半径4mm)からプレートが伸びるように配置
+         translate([is_left ? -leaf_w : 0, -leaf_h/2, 0]) 
+             cube([leaf_w, leaf_h, leaf_t]);
+             
+         // Knuckles
+         for (i = [0:knuckle_count-1]) {
+             // 左板は0, 2, 4番目、右板は1, 3番目
+             if ((is_left && (i % 2 == 0)) || (!is_left && (i % 2 != 0))) {
                  translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                  rotate([90, 0, 0]) 
                  cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
              }
          }
-         rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
-         for (i = [-1, 0, 1]) {
-             translate([-10, i * hole_dist, -1]) {
-                 cylinder(d1 = 6, d2 = 3.2, h = 1.1);
-                 cylinder(d = 3.2, h = leaf_t + 2);
-             }
-         }
      }
+ }
  
-     // Right Leaf (x > 0)
+ module hinge() {
      difference() {
          union() {
-             translate([0, -leaf_h/2, 0]) cube([leaf_w, leaf_h, leaf_t]);
-             // Right knuckles: index 1, 3
-             for (i = [1, 3]) {
-                 translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
-                 rotate([90, 0, 0]) 
-                 cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
+             leaf_with_knuckles(true);
+             leaf_with_knuckles(false);
+         }
+         // Pin hole
+         rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 1, center = true);
+         
+         // Screw holes (Left)
+         for (i = [-1, 0, 1]) {
+             translate([-15, i * hole_dist, -1]) {
+                 cylinder(d1 = 6, d2 = 3.2, h = 1.1);
+                 cylinder(d = 3.2, h = leaf_t + 2);
              }
          }
-         rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
+         // Screw holes (Right)
          for (i = [-1, 0, 1]) {
-             translate([10, i * hole_dist, -1]) {
+             translate([15, i * hole_dist, -1]) {
                  cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                  cylinder(d = 3.2, h = leaf_t + 2);
              }
          }
      }
  
      // Pin
      rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
  }
  
  $fn = 100;
  hinge();

SCAD (62 lines)

// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module leaf_with_knuckles(is_left) {
    union() {
        // Plate
        // knuckleの端(半径4mm)からプレートが伸びるように配置
        translate([is_left ? -leaf_w : 0, -leaf_h/2, 0]) 
            cube([leaf_w, leaf_h, leaf_t]);
            
        // Knuckles
        for (i = [0:knuckle_count-1]) {
            // 左板は0, 2, 4番目、右板は1, 3番目
            if ((is_left && (i % 2 == 0)) || (!is_left && (i % 2 != 0))) {
                translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                rotate([90, 0, 0]) 
                cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
    }
}

module hinge() {
    difference() {
        union() {
            leaf_with_knuckles(true);
            leaf_with_knuckles(false);
        }
        // Pin hole
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 1, center = true);
        
        // Screw holes (Left)
        for (i = [-1, 0, 1]) {
            translate([-15, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
        // Screw holes (Right)
        for (i = [-1, 0, 1]) {
            translate([15, i * hole_dist, -1]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                cylinder(d = 3.2, h = leaf_t + 2);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 100;
hinge();

i3 success →

8.1s · 2322/912t · $0.0006

diff vs i2: +15/-13

  // Parameters
  leaf_w = 25;
  leaf_h = 30;
  leaf_t = 2;
  knuckle_outer_d = 8;
  knuckle_inner_d = 4.3;
  pin_d = 4;
  pin_l = 32;
  knuckle_count = 5;
  knuckle_len = leaf_h / knuckle_count; // 6mm
  hole_dist = 8;
  
  module leaf_with_knuckles(is_left) {
+     // 回転の中心(X=0, Y=0)に対して、板を接線位置から開始させる
+     offset = is_left ? -leaf_w : 0;
+     
      union() {
-         // Plate
-         // knuckleの端(半径4mm)からプレートが伸びるように配置
-         translate([is_left ? -leaf_w : 0, -leaf_h/2, 0]) 
+         // Plate: knuckleの外周に接するように配置
+         translate([is_left ? -leaf_w : 0, -leaf_h/2, -leaf_t/2]) 
              cube([leaf_w, leaf_h, leaf_t]);
              
          // Knuckles
          for (i = [0:knuckle_count-1]) {
-             // 左板は0, 2, 4番目、右板は1, 3番目
+             // 左板(is_left=true)は0, 2, 4番目、右板は1, 3番目
              if ((is_left && (i % 2 == 0)) || (!is_left && (i % 2 != 0))) {
                  translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                  rotate([90, 0, 0]) 
                  cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
              }
          }
      }
  }
  
  module hinge() {
      difference() {
          union() {
              leaf_with_knuckles(true);
              leaf_with_knuckles(false);
          }
-         // Pin hole
-         rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 1, center = true);
+         // Pin hole (貫通)
+         rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
          
-         // Screw holes (Left)
+         // Screw holes (左板: X軸負方向)
          for (i = [-1, 0, 1]) {
-             translate([-15, i * hole_dist, -1]) {
-                 cylinder(d1 = 6, d2 = 3.2, h = 1.1);
-                 cylinder(d = 3.2, h = leaf_t + 2);
+             translate([-13, i * hole_dist, 0]) {
+                 cylinder(d1 = 6, d2 = 3.2, h = 1.1); // 皿穴テーパ
+                 translate([0,0,-2]) cylinder(d = 3.2, h = 5); // 貫通穴
              }
          }
-         // Screw holes (Right)
+         // Screw holes (右板: X軸正方向)
          for (i = [-1, 0, 1]) {
-             translate([15, i * hole_dist, -1]) {
+             translate([13, i * hole_dist, 0]) {
                  cylinder(d1 = 6, d2 = 3.2, h = 1.1);
-                 cylinder(d = 3.2, h = leaf_t + 2);
+                 translate([0,0,-2]) cylinder(d = 3.2, h = 5);
              }
          }
      }
  
      // Pin
      rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
  }
  
  $fn = 100;
  hinge();

SCAD (64 lines)

// Parameters
leaf_w = 25;
leaf_h = 30;
leaf_t = 2;
knuckle_outer_d = 8;
knuckle_inner_d = 4.3;
pin_d = 4;
pin_l = 32;
knuckle_count = 5;
knuckle_len = leaf_h / knuckle_count; // 6mm
hole_dist = 8;

module leaf_with_knuckles(is_left) {
    // 回転の中心(X=0, Y=0)に対して、板を接線位置から開始させる
    offset = is_left ? -leaf_w : 0;
    
    union() {
        // Plate: knuckleの外周に接するように配置
        translate([is_left ? -leaf_w : 0, -leaf_h/2, -leaf_t/2]) 
            cube([leaf_w, leaf_h, leaf_t]);
            
        // Knuckles
        for (i = [0:knuckle_count-1]) {
            // 左板(is_left=true)は0, 2, 4番目、右板は1, 3番目
            if ((is_left && (i % 2 == 0)) || (!is_left && (i % 2 != 0))) {
                translate([0, -leaf_h/2 + i * knuckle_len + knuckle_len/2, 0])
                rotate([90, 0, 0]) 
                cylinder(d = knuckle_outer_d, h = knuckle_len, center = true);
            }
        }
    }
}

module hinge() {
    difference() {
        union() {
            leaf_with_knuckles(true);
            leaf_with_knuckles(false);
        }
        // Pin hole (貫通)
        rotate([90, 0, 0]) cylinder(d = knuckle_inner_d, h = leaf_h + 2, center = true);
        
        // Screw holes (左板: X軸負方向)
        for (i = [-1, 0, 1]) {
            translate([-13, i * hole_dist, 0]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1); // 皿穴テーパ
                translate([0,0,-2]) cylinder(d = 3.2, h = 5); // 貫通穴
            }
        }
        // Screw holes (右板: X軸正方向)
        for (i = [-1, 0, 1]) {
            translate([13, i * hole_dist, 0]) {
                cylinder(d1 = 6, d2 = 3.2, h = 1.1);
                translate([0,0,-2]) cylinder(d = 3.2, h = 5);
            }
        }
    }

    // Pin
    rotate([90, 0, 0]) color("silver") cylinder(d = pin_d, h = pin_l, center = true);
}

$fn = 100;
hinge();

tier-3-butt-hinge / gemini-3.1-flash-lite-preview

prompt

variant: thinking

iteration: iter-png

tier-3-butt-hinge / `gemini-3.1-flash-lite-preview`

variant: `thinking`

iteration: `iter-png`