bare-high/o3 / tier-2-l-bracket

success tier 2

bare (o3)

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success 78.5s · 294/5298t · $0.0430

SCAD (44 lines)

// L-bracket with countersunk M4 holes
$fn = 64;

thickness = 3;
width     = 50;
length    = 40;          // depth of horizontal / height of vertical flange
hole_d    = 4.5;
sink_d    = 8;
sink_h    = 2;
xholes    = [10, width-10];

// Countersunk hole, axis along +Z, outer face at z = 0
module csunk(th = thickness) {
    // countersink
    cylinder(d = sink_d, h = sink_h, center = false);
    // through-hole (extra length to guarantee cut-through)
    translate([0, 0, sink_h])
        cylinder(d = hole_d, h = th + 1, center = false);
}

difference() {
    // -----------------------------------------------------------------
    // Solid bracket
    union() {
        // Horizontal flange (extends +Y, thickness in -Z)
        translate([0, 0, -thickness])
            cube([width, length, thickness], center = false);

        // Vertical flange (extends +Z, thickness in -Y)
        translate([0, -thickness, 0])
            cube([width, thickness, length], center = false);
    }

    // -----------------------------------------------------------------
    // Holes – horizontal flange (outer face at Z = -thickness)
    for (x = xholes)
        translate([x, length/2, -thickness])
            csunk();

    // Holes – vertical flange (outer face at Y = -thickness)
    for (x = xholes)
        translate([x, -thickness, length/2])
            rotate([90, 0, 0]) csunk();
}

```openscad
// L-bracket with countersunk M4 holes
$fn = 64;

thickness = 3;
width     = 50;
length    = 40;          // depth of horizontal / height of vertical flange
hole_d    = 4.5;
sink_d    = 8;
sink_h    = 2;
xholes    = [10, width-10];

// Countersunk hole, axis along +Z, outer face at z = 0
module csunk(th = thickness) {
    // countersink
    cylinder(d = sink_d, h = sink_h, center = false);
    // through-hole (extra length to guarantee cut-through)
    translate([0, 0, sink_h])
        cylinder(d = hole_d, h = th + 1, center = false);
}

difference() {
    // -----------------------------------------------------------------
    // Solid bracket
    union() {
        // Horizontal flange (extends +Y, thickness in -Z)
        translate([0, 0, -thickness])
            cube([width, length, thickness], center = false);

        // Vertical flange (extends +Z, thickness in -Y)
        translate([0, -thickness, 0])
            cube([width, thickness, length], center = false);
    }

    // -----------------------------------------------------------------
    // Holes – horizontal flange (outer face at Z = -thickness)
    for (x = xholes)
        translate([x, length/2, -thickness])
            csunk();

    // Holes – vertical flange (outer face at Y = -thickness)
    for (x = xholes)
        translate([x, -thickness, length/2])
            rotate([90, 0, 0]) csunk();
}
```

パラメータ (6) —

thickness width length hole_d sink_d sink_h

スライダを動かすと openscad-wasm で再レンダリング

runId	`bare-high_o3-47e39438d2db-2026-04-28T18-53-14-243Z`
matrixId	`bare-high/o3`
signature	`47e39438d2db6d5a…`
provider	openai
model	o3-2025-04-16
harness	bare
status	success
duration	78.49s (wallclock: load + prompt eval + generation + network)
tokens	294 in / 5298 out
wallclock tok/s	67.5 tok/s (end-to-end)
cost	$0.0430
createdAt	2026-04-28T18:53:14.243Z
gitCommit	`781e6c683dda`
openscad	OpenSCAD version 2026.04.27

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OpenSCAD で、L 字に折れた金具(L-bracket)を作ってください。

形状:
- 水平面と垂直面の 2 つのフランジが直角に繋がっている
- 水平面は 50mm × 40mm(幅 × 奥行き)
- 垂直面は 50mm × 40mm(幅 × 高さ)
- 板厚はどちらも 3mm
- 内側コーナーが原点になるように配置(水平面は +Y 方向、垂直面は +Z 方向に伸びる)

皿穴(countersunk holes):
- 各面に 2 個ずつ、合計 4 個
- M4 ねじ用(貫通穴 Φ4.5mm + 皿座面 Φ8mm × 深さ 2mm)
- 各面の中心線上で、面の縁から 10mm 内側、左右対称に 2 個並べる
- 皿座面は外側(ボルト頭が当たる側)に向ける

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/o3 / tier-2-l-bracket

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