bare-high/gpt-5.4-nano / tier-3-butt-hinge

success tier 3

bare (gpt 5.4 nano)

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success 93.7s · 592/15016t · $0.0091

SCAD (99 lines)

$fn = 64;

EPS = 0.01;

// Plate
plateX = 25;      // open/close direction
plateY = 30;      // along pin axis
plateT = 2;       // thickness
xHalf  = plateX/2;
zMid   = plateT/2;

// Hinge pin
pinD = 4;
pinL = 32;

// Knuckle
knOD = 8;
knID = pinD + 0.3; // clearance
knLen = 6;          // each segment length
knYLeft  = [-12, 0, 12]; // 3 knuckles (outer + middle)
knYRight = [-6, 6];      // 2 knuckles (interleaving)

// Screw holes
holeThroughD = 3.2;
holeCsD      = 6;
holeCsR      = holeCsD/2;
holeCsDepth  = 1;
holePitch    = 8;
holeInset    = 5; // from the far edge

module tubeSegment(od, id, lenY) {
  rotate([90, 0, 0]) {
    difference() {
      cylinder(d=od, h=lenY, center=true);
      cylinder(d=id, h=lenY + 0.02, center=true);
    }
  }
}

module knuckle(side, yCenter) {
  // Keep knuckle only on the leaf side (x<0 for left, x>0 for right)
  intersection() {
    translate([0, yCenter, zMid]) tubeSegment(knOD, knID, knLen);

    // Large clipping half-space
    if (side < 0) {
      // x <= -EPS
      translate([-100, -100, -100]) cube([100 - EPS, 200, 200], center=false);
    } else {
      // x >= +EPS
      translate([EPS, -100, -100]) cube([100, 200, 200], center=false);
    }
  }
}

module countersunkHole(x, y) {
  // countersink cone from top surface (z = plateT) down by holeCsDepth
  translate([x, y, plateT - holeCsDepth])
    cylinder(h=holeCsDepth, r1=0, r2=holeCsR, center=false);

  // through hole
  translate([x, y, -1])
    cylinder(h=plateT + 2, d=holeThroughD, center=false);
}

module leaf(side) {
  knY = (side < 0) ? knYLeft : knYRight;
  xPlateCenter = side * xHalf;
  xHole = side * (plateX - holeInset);

  difference() {
    union() {
      // Flat leaf plate
      translate([xPlateCenter, 0, zMid])
        cube([plateX, plateY, plateT], center=true);

      // Knuckles
      for (yCenter = knY)
        knuckle(side, yCenter);
    }

    // 3x M3 countersunk holes (y: -8, 0, +8)
    for (i = [-1, 0, 1]) {
      countersunkHole(xHole, i * holePitch);
    }
  }
}

// Assembled open state (180°): left leaf at x<0, right leaf at x>0, pin along +Y
union() {
  color([0.75, 0.75, 0.75]) leaf(-1); // left
  color([0.70, 0.70, 0.70]) leaf(1);  // right

  color([0.95, 0.55, 0.15]) {          // pin axis
    translate([0, 0, zMid])
      rotate([90, 0, 0])
        cylinder(d=pinD, h=pinL, center=true);
  }
}

```openscad
$fn = 64;

EPS = 0.01;

// Plate
plateX = 25;      // open/close direction
plateY = 30;      // along pin axis
plateT = 2;       // thickness
xHalf  = plateX/2;
zMid   = plateT/2;

// Hinge pin
pinD = 4;
pinL = 32;

// Knuckle
knOD = 8;
knID = pinD + 0.3; // clearance
knLen = 6;          // each segment length
knYLeft  = [-12, 0, 12]; // 3 knuckles (outer + middle)
knYRight = [-6, 6];      // 2 knuckles (interleaving)

// Screw holes
holeThroughD = 3.2;
holeCsD      = 6;
holeCsR      = holeCsD/2;
holeCsDepth  = 1;
holePitch    = 8;
holeInset    = 5; // from the far edge

module tubeSegment(od, id, lenY) {
  rotate([90, 0, 0]) {
    difference() {
      cylinder(d=od, h=lenY, center=true);
      cylinder(d=id, h=lenY + 0.02, center=true);
    }
  }
}

module knuckle(side, yCenter) {
  // Keep knuckle only on the leaf side (x<0 for left, x>0 for right)
  intersection() {
    translate([0, yCenter, zMid]) tubeSegment(knOD, knID, knLen);

    // Large clipping half-space
    if (side < 0) {
      // x <= -EPS
      translate([-100, -100, -100]) cube([100 - EPS, 200, 200], center=false);
    } else {
      // x >= +EPS
      translate([EPS, -100, -100]) cube([100, 200, 200], center=false);
    }
  }
}

module countersunkHole(x, y) {
  // countersink cone from top surface (z = plateT) down by holeCsDepth
  translate([x, y, plateT - holeCsDepth])
    cylinder(h=holeCsDepth, r1=0, r2=holeCsR, center=false);

  // through hole
  translate([x, y, -1])
    cylinder(h=plateT + 2, d=holeThroughD, center=false);
}

module leaf(side) {
  knY = (side < 0) ? knYLeft : knYRight;
  xPlateCenter = side * xHalf;
  xHole = side * (plateX - holeInset);

  difference() {
    union() {
      // Flat leaf plate
      translate([xPlateCenter, 0, zMid])
        cube([plateX, plateY, plateT], center=true);

      // Knuckles
      for (yCenter = knY)
        knuckle(side, yCenter);
    }

    // 3x M3 countersunk holes (y: -8, 0, +8)
    for (i = [-1, 0, 1]) {
      countersunkHole(xHole, i * holePitch);
    }
  }
}

// Assembled open state (180°): left leaf at x<0, right leaf at x>0, pin along +Y
union() {
  color([0.75, 0.75, 0.75]) leaf(-1); // left
  color([0.70, 0.70, 0.70]) leaf(1);  // right

  color([0.95, 0.55, 0.15]) {          // pin axis
    translate([0, 0, zMid])
      rotate([90, 0, 0])
        cylinder(d=pinD, h=pinL, center=true);
  }
}
```

パラメータ (13) —

EPS plateX plateY plateT pinD pinL knOD knLen holeThroughD holeCsD holeCsDepth holePitch holeInset

スライダを動かすと openscad-wasm で再レンダリング

runId	`bare-high_gpt-5.4-nano-edc7ca863e2b-2026-04-28T17-23-28-042Z`
matrixId	`bare-high/gpt-5.4-nano`
signature	`edc7ca863e2b16c8…`
provider	openai
model	gpt-5.4-nano-2026-03-17
harness	bare
status	success
duration	93.67s (wallclock: load + prompt eval + generation + network)
tokens	592 in / 15016 out
wallclock tok/s	160.3 tok/s (end-to-end)
cost	$0.0091
createdAt	2026-04-28T17:23:28.042Z
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-5.4-nano / tier-3-butt-hinge

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