tier-2-l-bracket / claude-sonnet-4-6

// L-Bracket

// Parameters
w = 50;   // width (X)
hf = 40;  // horizontal flange depth (Y)
vf = 40;  // vertical flange height (Z)
t = 3;    // thickness

// Hole parameters
hole_d = 4.5;
cs_d = 8;
cs_depth = 2;
hole_offset_edge = 10;  // from edge along flange direction
hole_offset_side = w/2 - (w/4); // left/right: symmetric, at w/4 from center each side
// holes at X = -w/4 and X = +w/4 ... actually "left-right symmetric, 2 holes"
// Let's place at X = ±(w/2 - 10) ... no, "center line, left-right symmetric 2 holes"
// "各面の中心線上で、面の縁から10mm内側、左右対称に2個"
// I'll interpret: along width, symmetric about center, at X = ±(w/4) 
// Actually let's use X = ±(w/2 - 10) for nice placement
hx1 = -(w/2 - 10);
hx2 =  (w/2 - 10);

module countersunk_hole_vertical(depth_total) {
    // hole along Z, countersink at top (Z = depth_total, i.e., outside face going down)
    // Used for horizontal flange: outside is -Z face
    union() {
        cylinder(h = depth_total, d = hole_d, $fn=32);
        translate([0, 0, -cs_depth])
            cylinder(h = cs_depth + 0.01, d1 = cs_d, d2 = hole_d, $fn=32);
    }
}

module countersunk_hole_horizontal(depth_total) {
    // hole along Y, countersink at -Y face (outside of vertical flange)
    union() {
        cylinder(h = depth_total, d = hole_d, $fn=32);
        cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
    }
}

difference() {
    union() {
        // Horizontal flange: extends in +Y, lies in XY plane, thickness in Z (0 to -t)
        translate([-w/2, 0, -t])
            cube([w, hf, t]);
        
        // Vertical flange: extends in +Z, lies in XZ plane, thickness in Y (0 to -t)  
        // Wait: inner corner at origin, vertical goes +Z, horizontal goes +Y
        // Vertical flange: X from -w/2 to w/2, Z from 0 to vf, Y from -t to 0
        translate([-w/2, -t, 0])
            cube([w, t, vf]);
    }
    
    // Holes in horizontal flange (along Z)
    // Outside face is at Z = -t (bottom), countersink opens downward
    // Holes at Y = hf - 10 (10mm from far edge), X = hx1, hx2
    for (hx = [hx1, hx2]) {
        translate([hx, hf - hole_offset_edge, 0]) {
            // drill from Z=0 down to Z=-t
            translate([0, 0, -t])
                union() {
                    cylinder(h = t, d = hole_d, $fn=32);
                    // countersink at bottom (outside = -t face)
                    cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
                }
        }
    }
    
    // Holes in vertical flange (along Y)
    // Outside face is at Y = -t, countersink opens outward (-Y direction)
    // Holes at Z = vf - 10, X = hx1, hx2
    for (hx = [hx1, hx2]) {
        translate([hx, -t, vf - hole_offset_edge]) {
            rotate([-90, 0, 0]) {
                cylinder(h = t, d = hole_d, $fn=32);
                // countersink at start (Y = -t face, outside)
                cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
            }
        }
    }
}

// L-Bracket
// Inner corner at origin
// Horizontal flange extends in +Y direction
// Vertical flange extends in +Z direction

// Parameters
width        = 50;   // X direction
h_depth      = 40;   // Horizontal flange depth (Y direction)
v_height     = 40;   // Vertical flange height (Z direction)
thickness    = 3;    // Plate thickness

// Countersunk hole parameters
through_d    = 4.5;  // Through hole diameter (M4)
cs_d         = 8.0;  // Countersink diameter
cs_depth     = 2.0;  // Countersink depth
edge_offset  = 10;   // Distance from edge to hole center
lr_offset    = 15;   // Distance from center-line to each hole (left/right)

module countersunk_hole(depth, from_top=true) {
    // Cylindrical through hole + countersink cone
    // Hole axis along Z; countersink at +Z face when from_top=true
    union() {
        // Through hole
        cylinder(d=through_d, h=depth, center=false, $fn=32);
        if (from_top) {
            // Countersink at top face (z = depth)
            translate([0, 0, depth - cs_depth])
                cylinder(d1=through_d, d2=cs_d, h=cs_depth, $fn=32);
        } else {
            // Countersink at bottom face (z = 0)
            cylinder(d1=cs_d, d2=through_d, h=cs_depth, $fn=32);
        }
    }
}

difference() {
    union() {
        // Horizontal flange: lies on XY plane, extends in +Y
        // Z from -thickness to 0  →  but inner corner is at origin,
        // so horizontal plate occupies Z = [-thickness, 0], Y = [0, h_depth]
        translate([0, 0, -thickness])
            cube([width, h_depth, thickness]);

        // Vertical flange: stands in XZ plane, extends in +Z
        // Y from -thickness to 0, Z = [0, v_height]
        translate([0, -thickness, 0])
            cube([width, thickness, v_height]);
    }

    // --- Countersunk holes in HORIZONTAL flange ---
    // Bolt heads on top (outside = +Z face at z=0), so countersink at top.
    // Holes located at Y = h_depth - edge_offset (10 mm from far edge)
    // X positions: width/2 ± lr_offset
    for (xpos = [width/2 - lr_offset, width/2 + lr_offset]) {
        translate([xpos, h_depth - edge_offset, -thickness])
            // from_top=false → countersink at bottom (z=0 of the shifted solid = z=-thickness global)
            // Actually we want countersink on the OUTER (top) face which is z=0 global.
            // Hole goes from z=-thickness upward, countersink at the top (z=0 global).
            countersunk_hole(thickness, from_top=true);
    }

    // --- Countersunk holes in VERTICAL flange ---
    // Bolt heads on outer face (outside = -Y face at y=-thickness).
    // Holes located at Z = v_height - edge_offset (10 mm from top edge)
    // X positions: width/2 ± lr_offset
    // We'll rotate the hole so its axis is along Y.
    for (xpos = [width/2 - lr_offset, width/2 + lr_offset]) {
        translate([xpos, -thickness, v_height - edge_offset])
            rotate([-90, 0, 0])
                // Hole travels in +Y from y=-thickness to y=0
                // Countersink at top of hole cylinder = outer face (y=-thickness side)
                // from_top=false puts countersink at z=0 of local system = y=-thickness global
                countersunk_hole(thickness, from_top=false);
    }
}

// L-Bracket
// Inner corner at origin
// Horizontal flange extends in +Y direction
// Vertical flange extends in +Z direction

// Parameters
width        = 50;   // X direction
h_depth      = 40;   // Horizontal flange depth (Y direction)
v_height     = 40;   // Vertical flange height (Z direction)
thickness    = 3;    // Plate thickness

// Countersunk hole parameters
through_d    = 4.5;  // Through hole diameter (M4)
cs_d         = 8.0;  // Countersink diameter
cs_depth     = 2.0;  // Countersink depth
edge_offset  = 10;   // Distance from edge to hole center
lr_offset    = 15;   // Distance from center-line to each hole (left/right)

module countersunk_hole(depth, from_top=true) {
    // Cylindrical through hole + countersink cone
    // Hole axis along Z; countersink at +Z face when from_top=true
    union() {
        // Through hole
        cylinder(d=through_d, h=depth, center=false, $fn=32);
        if (from_top) {
            // Countersink at top face (z = depth)
            translate([0, 0, depth - cs_depth])
                cylinder(d1=through_d, d2=cs_d, h=cs_depth, $fn=32);
        } else {
            // Countersink at bottom face (z = 0)
            cylinder(d1=cs_d, d2=through_d, h=cs_depth, $fn=32);
        }
    }
}

difference() {
    union() {
        // Horizontal flange: lies on XY plane, extends in +Y
        // Z from -thickness to 0  →  but inner corner is at origin,
        // so horizontal plate occupies Z = [-thickness, 0], Y = [0, h_depth]
        translate([0, 0, -thickness])
            cube([width, h_depth, thickness]);

        // Vertical flange: stands in XZ plane, extends in +Z
        // Y from -thickness to 0, Z = [0, v_height]
        translate([0, -thickness, 0])
            cube([width, thickness, v_height]);
    }

    // --- Countersunk holes in HORIZONTAL flange ---
    // Bolt heads on top (outside = +Z face at z=0), so countersink at top.
    // Holes located at Y = h_depth - edge_offset (10 mm from far edge)
    // X positions: width/2 ± lr_offset
    for (xpos = [width/2 - lr_offset, width/2 + lr_offset]) {
        translate([xpos, h_depth - edge_offset, -thickness])
            // from_top=false → countersink at bottom (z=0 of the shifted solid = z=-thickness global)
            // Actually we want countersink on the OUTER (top) face which is z=0 global.
            // Hole goes from z=-thickness upward, countersink at the top (z=0 global).
            countersunk_hole(thickness, from_top=true);
    }

    // --- Countersunk holes in VERTICAL flange ---
    // Bolt heads on outer face (outside = -Y face at y=-thickness).
    // Holes located at Z = v_height - edge_offset (10 mm from top edge)
    // X positions: width/2 ± lr_offset
    // We'll rotate the hole so its axis is along Y.
    for (xpos = [width/2 - lr_offset, width/2 + lr_offset]) {
        translate([xpos, -thickness, v_height - edge_offset])
            rotate([-90, 0, 0])
                // Hole travels in +Y from y=-thickness to y=0
                // Countersink at top of hole cylinder = outer face (y=-thickness side)
                // from_top=false puts countersink at z=0 of local system = y=-thickness global
                countersunk_hole(thickness, from_top=false);
    }
}

// L-Bracket

// Parameters
w = 50;   // width (X)
hf = 40;  // horizontal flange depth (Y)
vf = 40;  // vertical flange height (Z)
t = 3;    // thickness

// Hole parameters
hole_d = 4.5;
cs_d = 8;
cs_depth = 2;
hole_offset_edge = 10;  // from edge along flange direction
hole_offset_side = w/2 - (w/4); // left/right: symmetric, at w/4 from center each side
// holes at X = -w/4 and X = +w/4 ... actually "left-right symmetric, 2 holes"
// Let's place at X = ±(w/2 - 10) ... no, "center line, left-right symmetric 2 holes"
// "各面の中心線上で、面の縁から10mm内側、左右対称に2個"
// I'll interpret: along width, symmetric about center, at X = ±(w/4) 
// Actually let's use X = ±(w/2 - 10) for nice placement
hx1 = -(w/2 - 10);
hx2 =  (w/2 - 10);

module countersunk_hole_vertical(depth_total) {
    // hole along Z, countersink at top (Z = depth_total, i.e., outside face going down)
    // Used for horizontal flange: outside is -Z face
    union() {
        cylinder(h = depth_total, d = hole_d, $fn=32);
        translate([0, 0, -cs_depth])
            cylinder(h = cs_depth + 0.01, d1 = cs_d, d2 = hole_d, $fn=32);
    }
}

module countersunk_hole_horizontal(depth_total) {
    // hole along Y, countersink at -Y face (outside of vertical flange)
    union() {
        cylinder(h = depth_total, d = hole_d, $fn=32);
        cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
    }
}

difference() {
    union() {
        // Horizontal flange: extends in +Y, lies in XY plane, thickness in Z (0 to -t)
        translate([-w/2, 0, -t])
            cube([w, hf, t]);
        
        // Vertical flange: extends in +Z, lies in XZ plane, thickness in Y (0 to -t)  
        // Wait: inner corner at origin, vertical goes +Z, horizontal goes +Y
        // Vertical flange: X from -w/2 to w/2, Z from 0 to vf, Y from -t to 0
        translate([-w/2, -t, 0])
            cube([w, t, vf]);
    }
    
    // Holes in horizontal flange (along Z)
    // Outside face is at Z = -t (bottom), countersink opens downward
    // Holes at Y = hf - 10 (10mm from far edge), X = hx1, hx2
    for (hx = [hx1, hx2]) {
        translate([hx, hf - hole_offset_edge, 0]) {
            // drill from Z=0 down to Z=-t
            translate([0, 0, -t])
                union() {
                    cylinder(h = t, d = hole_d, $fn=32);
                    // countersink at bottom (outside = -t face)
                    cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
                }
        }
    }
    
    // Holes in vertical flange (along Y)
    // Outside face is at Y = -t, countersink opens outward (-Y direction)
    // Holes at Z = vf - 10, X = hx1, hx2
    for (hx = [hx1, hx2]) {
        translate([hx, -t, vf - hole_offset_edge]) {
            rotate([-90, 0, 0]) {
                cylinder(h = t, d = hole_d, $fn=32);
                // countersink at start (Y = -t face, outside)
                cylinder(h = cs_depth, d1 = cs_d, d2 = hole_d, $fn=32);
            }
        }
    }
}

// L-Bracket (L字金具)
// 内側コーナーが原点、水平面は+Y方向、垂直面は+Z方向

width      = 50;   // 幅 (X方向)
fl_horiz   = 40;   // 水平フランジ奥行き (Y方向)
fl_vert    = 40;   // 垂直フランジ高さ (Z方向)
t          = 3;    // 板厚
hole_d     = 4.5;  // 貫通穴径
cs_d       = 8;    // 皿座面径
cs_dep     = 2;    // 皿座面深さ
inset      = 10;   // 縁からの距離
eps        = 0.01; // 干渉回避用微小値

// 穴のX位置(左右対称、中心線から±15mm)
hole_xs = [width/2 - (width/2 - inset), width/2 + (width/2 - inset)];
// = [10, 40]

module l_bracket() {
    difference() {
        union() {
            // 水平面: X[0~50], Y[0~40], Z[-3~0]
            translate([0, 0, -t])
                cube([width, fl_horiz, t]);

            // 垂直面: X[0~50], Y[-3~0], Z[0~40]
            translate([0, -t, 0])
                cube([width, t, fl_vert]);
        }

        // --- 水平面の皿穴 ---
        // 外側 = 下面(Z = -t)、穴は下から上(+Z)へ開ける
        // Y方向: 縁(Y=fl_horiz)から inset 内側 → Y = fl_horiz - inset = 30
        for (x = hole_xs) {
            translate([x, fl_horiz - inset, -t - eps]) {
                // 貫通穴(下から上へ)
                cylinder(d=hole_d, h=t + 2*eps, $fn=48);
                // 皿座面: 外側(下面)から内側へ cs_dep 掘る
                // 下端(Z=0相当)が大径(cs_d)、上が小径(hole_d)
                cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=48);
            }
        }

        // --- 垂直面の皿穴 ---
        // 外側 = 前面(Y = -t)、穴は前(-Y)から後(+Y)へ開ける
        // Z方向: 縁(Z=fl_vert)から inset 内側 → Z = fl_vert - inset = 30
        for (x = hole_xs) {
            translate([x, -t - eps, fl_vert - inset]) {
                rotate([-90, 0, 0]) {
                    // 貫通穴(前から後へ)
                    cylinder(d=hole_d, h=t + 2*eps, $fn=48);
                    // 皿座面: 外側(前面)から内側へ cs_dep 掘る
                    cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=48);
                }
            }
        }
    }
}

l_bracket();

// L-Bracket (L字金具)
// 内側コーナーが原点、水平面は+Y方向、垂直面は+Z方向

width    = 50;   // 幅 (X方向)
fl_horiz = 40;   // 水平フランジ奥行き (Y方向)
fl_vert  = 40;   // 垂直フランジ高さ (Z方向)
t        = 3;    // 板厚
hole_d   = 4.5;  // 貫通穴径
cs_d     = 8;    // 皿座面径
cs_dep   = 2;    // 皿座面深さ
inset    = 10;   // 縁からの距離
eps      = 0.1;  // 干渉回避用微小値

// 穴のX位置: 幅50mm、縁から10mm内側 → X=10 と X=40
hole_xs = [inset, width - inset]; // [10, 40]

module l_bracket() {
    difference() {
        union() {
            // 水平面: X[0~50], Y[0~40], Z[-3~0]
            translate([0, 0, -t])
                cube([width, fl_horiz, t]);

            // 垂直面: X[0~50], Y[-3~0], Z[0~40]
            translate([0, -t, 0])
                cube([width, t, fl_vert]);
        }

        // --- 水平面の皿穴 ---
        // 外側 = 下面(Z = -t)
        // 皿座面は下(外側)が大径、上(内側)が小径
        // Y位置: 奥の縁(Y=40)から inset=10 内側 → Y=30
        for (x = hole_xs) {
            translate([x, fl_horiz - inset, -t - eps]) {
                // 皿座面(外側=下から): d1=cs_d(下/外), d2=hole_d(上/内)
                cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=64);
                // 残りの貫通穴
                cylinder(d=hole_d, h=t + 2*eps, $fn=64);
            }
        }

        // --- 垂直面の皿穴 ---
        // 外側 = 前面(Y = -t)
        // 皿座面は前(外側)が大径、後(内側)が小径
        // Z位置: 上の縁(Z=40)から inset=10 内側 → Z=30
        for (x = hole_xs) {
            // 前面(外側)から穴を開ける: Y方向に +t 進む
            translate([x, -t - eps, fl_vert - inset]) {
                rotate([90, 0, 0]) {
                    // rotate後: Z方向が -Y方向(穴が内側へ向く)
                    // 皿座面を外側(前面)に: d1=cs_d, d2=hole_d
                    cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=64);
                    // 残りの貫通穴
                    cylinder(d=hole_d, h=t + 2*eps, $fn=64);
                }
            }
        }
    }
}

l_bracket();

// L-Bracket (L字金具)
// 内側コーナーが原点、水平面は+Y方向、垂直面は+Z方向

width    = 50;   // 幅 (X方向)
fl_horiz = 40;   // 水平フランジ奥行き (Y方向)
fl_vert  = 40;   // 垂直フランジ高さ (Z方向)
t        = 3;    // 板厚
hole_d   = 4.5;  // 貫通穴径
cs_d     = 8;    // 皿座面径
cs_dep   = 2;    // 皿座面深さ
inset    = 10;   // 縁からの距離
eps      = 0.1;  // 干渉回避用微小値

// 穴のX位置: 幅50mm、縁から10mm内側 → X=10 と X=40
hole_xs = [inset, width - inset];

module countersunk_hole_vertical(depth) {
    // 上から下へ: 皿座面は上(外側=上面)
    translate([0, 0, depth])
        rotate([180, 0, 0]) {
            cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=64);
            translate([0, 0, cs_dep])
                cylinder(d=hole_d, h=depth - cs_dep + eps, $fn=64);
        }
}

module countersunk_hole_horizontal(depth) {
    // 前面(Y=-t)から後方(+Y)へ掘る: 皿座面は前(外側=前面)
    cylinder(d1=cs_d, d2=hole_d, h=cs_dep + eps, $fn=64);
    translate([0, 0, cs_dep])
        cylinder(d=hole_d, h=depth - cs_dep + eps, $fn=64);
}

module l_bracket() {
    difference() {
        union() {
            // 水平面: X[0~50], Y[0~40], Z[-3~0]
            translate([0, 0, -t])
                cube([width, fl_horiz, t]);

            // 垂直面: X[0~50], Y[-3~0], Z[0~40]
            translate([0, -t, 0])
                cube([width, t, fl_vert]);
        }

        // --- 水平面の皿穴 ---
        // 外側 = 上面(Z=0)、穴は上から下へ
        // Y位置: 縁(Y=fl_horiz)から inset 内側 → Y = fl_horiz - inset = 30
        for (x = hole_xs) {
            translate([x, fl_horiz - inset, 0])
                countersunk_hole_vertical(t + 2*eps);
        }

        // --- 垂直面の皿穴 ---
        // 外側 = 前面(Y=-t)、穴は前面から後方(+Y)へ
        // Z位置: 縁(Z=fl_vert)から inset 内側 → Z = fl_vert - inset = 30
        for (x = hole_xs) {
            translate([x, -t - eps, fl_vert - inset])
                rotate([-90, 0, 0])
                    countersunk_hole_horizontal(t + 2*eps);
        }
    }
}

l_bracket();