120 lines
3.8 KiB
OpenSCAD
120 lines
3.8 KiB
OpenSCAD
// ============================================
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// Template: Parametric Electronics Enclosure
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// Description: Box with lid, screw posts, ventilation
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// ============================================
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// --- Parameters ---
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width = 80; // [mm] inner width (X)
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depth = 60; // [mm] inner depth (Y)
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height = 35; // [mm] inner height (Z)
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wall = 2.5; // [mm] wall thickness
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corner_r = 3; // [mm] corner radius
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lid_height = 8; // [mm] lid inner height
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lip = 1.5; // [mm] lid overlap lip
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tolerance = 0.3; // [mm] fit tolerance
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// Screw posts
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screw_d = 3; // [mm] screw hole diameter
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post_d = 7; // [mm] post outer diameter
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post_inset = 5; // [mm] post inset from inner wall
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// Ventilation
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vent_slots = 5; // number of vent slots
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vent_width = 2; // [mm] slot width
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vent_length = 20; // [mm] slot length
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// --- Quality ---
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$fn = 64;
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eps = 0.01; // epsilon for clean booleans
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// --- Assertions ---
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assert(wall >= 1.2, "wall too thin for FDM (min 1.2mm)");
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assert(width > 2 * wall, "inner width must be positive");
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assert(depth > 2 * wall, "inner depth must be positive");
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assert(height > wall, "inner height must be positive");
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// --- Render ---
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// Show both parts side by side
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box_bottom();
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translate([width + wall * 2 + 10, 0, 0]) box_lid();
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// --- Modules ---
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module box_bottom() {
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difference() {
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// Outer shell
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rounded_box([width + 2*wall, depth + 2*wall, height + wall], corner_r);
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// Inner cavity
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translate([wall, wall, wall])
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rounded_box([width, depth, height + wall + 1], max(corner_r - wall, 0.5));
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// Ventilation slots on one side
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translate([wall + (width - (vent_slots * (vent_width + 3))) / 2, -1, height/2])
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for (i = [0:vent_slots-1])
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translate([i * (vent_width + 3), 0, 0])
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cube([vent_width, wall + 2, vent_length]);
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}
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// Screw posts
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for (pos = screw_post_positions())
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translate([pos.x, pos.y, wall])
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screw_post(post_d, screw_d, height - 2);
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// Lid lip (inner ridge)
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difference() {
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translate([wall - lip, wall - lip, height + wall - lip])
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rounded_box([width + 2*lip, depth + 2*lip, lip], max(corner_r - wall + lip, 0.5));
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translate([wall, wall, height + wall - lip - 0.01])
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rounded_box([width, depth, lip + 0.02], max(corner_r - wall, 0.5));
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}
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}
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module box_lid() {
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difference() {
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// Outer lid
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rounded_box([width + 2*wall, depth + 2*wall, lid_height + wall], corner_r);
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// Inner cavity
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translate([wall, wall, -0.01])
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rounded_box([width, depth, lid_height + 0.02], max(corner_r - wall, 0.5));
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}
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// Lip insert (fits inside bottom lip)
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translate([wall + tolerance, wall + tolerance, 0])
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difference() {
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rounded_box(
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[width - 2*tolerance, depth - 2*tolerance, lip],
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max(corner_r - wall - tolerance, 0.5)
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);
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translate([lip, lip, -0.01])
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rounded_box(
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[width - 2*lip - 2*tolerance, depth - 2*lip - 2*tolerance, lip + 0.02],
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max(corner_r - wall - lip - tolerance, 0.5)
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);
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}
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}
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module rounded_box(size, r) {
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hull() {
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for (x = [r, size.x - r])
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for (y = [r, size.y - r])
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translate([x, y, 0])
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cylinder(r=r, h=size.z);
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}
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}
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module screw_post(outer_d, inner_d, h) {
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difference() {
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cylinder(d=outer_d, h=h);
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translate([0, 0, -0.01])
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cylinder(d=inner_d, h=h + 0.02);
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}
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}
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function screw_post_positions() = [
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[wall + post_inset, wall + post_inset, 0],
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[wall + width - post_inset, wall + post_inset, 0],
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[wall + post_inset, wall + depth - post_inset, 0],
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[wall + width - post_inset, wall + depth - post_inset, 0]
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];
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