166 lines
4 KiB
OpenSCAD
166 lines
4 KiB
OpenSCAD
#!/usr/bin/openscad -o /tmp/ignore.stl
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//
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// stress_test_models.scad
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// 20260317 ChatGPT
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// $Id$
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// $HeadURL$
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//
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// Example command lines:
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//
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// openscad -D 'model="cube"' -o cube_20260317_1335.stl stress_test_models.scad
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// openscad -D 'model="ybar"' -o ybar_20260317_1335.stl stress_test_models.scad
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// openscad -D 'model="tower"' -o tower_20260317_1335.stl stress_test_models.scad
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// openscad -D 'model="all"' -o all_20260317_1335.stl stress_test_models.scad
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//
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// Suggested slicer use:
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//
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// 1) Print each model as a SEPARATE run.
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// 2) For ybar, orient the LONG dimension along the printer's Y axis
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// so the bed moves the long way front-to-back.
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// 3) Infill is set in Orca Slicer, not here.
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//
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// Suggested slicer settings:
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//
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// cube: 0.20 layer, 3 perimeters, 20-25% grid or gyroid
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// ybar: 0.20 layer, 3 perimeters, 15-25% grid
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// tower: 0.20 layer, 3 perimeters, 0-10% infill, no brim at first;
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// add brim only if adhesion becomes the issue rather than motion
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//
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/* [General] */
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model = "all"; // [cube,ybar,tower,all]
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center_models = false; // true / false
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add_labels = true; // true / false
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/* [Cube Dimensions] */
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cube_x = 40;
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cube_y = 40;
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cube_z = 40;
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/* [Y Bar Dimensions] */
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ybar_x = 20;
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ybar_y = 150;
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ybar_z = 50;
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/* [Tower Dimensions] */
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tower_x = 18;
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tower_y = 18;
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tower_z = 120;
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/* [Edge Treatment] */
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corner_radius = 1.2; // 0 for sharp corners
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$fn = 48;
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/* [Labeling] */
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label_depth = 0.6;
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label_size = 7;
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label_font = "Liberation Sans:style=Bold";
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/* [Layout For model="all"] */
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gap_between_models = 20;
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// --------------------------------------------------
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// Main
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// --------------------------------------------------
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if (model == "cube") {
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make_cube();
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}
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else if (model == "ybar") {
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make_ybar();
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}
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else if (model == "tower") {
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make_tower();
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}
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else if (model == "all") {
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make_all();
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}
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else {
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echo("ERROR: model must be one of: cube, ybar, tower, all");
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}
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// --------------------------------------------------
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// Assemblies
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// --------------------------------------------------
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module make_all() {
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x0 = 0;
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x1 = x0 + cube_x + gap_between_models;
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x2 = x1 + ybar_x + gap_between_models;
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translate([x0, 0, 0]) make_cube();
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translate([x1, 0, 0]) make_ybar();
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translate([x2, 0, 0]) make_tower();
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}
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module make_cube() {
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difference() {
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rounded_box(cube_x, cube_y, cube_z, corner_radius, center_models);
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if (add_labels)
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place_top_label("CUBE", cube_x, cube_y, cube_z, center_models);
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}
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}
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module make_ybar() {
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difference() {
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rounded_box(ybar_x, ybar_y, ybar_z, corner_radius, center_models);
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if (add_labels)
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place_top_label("YBAR", ybar_x, ybar_y, ybar_z, center_models);
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}
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}
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module make_tower() {
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difference() {
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rounded_box(tower_x, tower_y, tower_z, corner_radius, center_models);
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if (add_labels)
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place_top_label("TOWER", tower_x, tower_y, tower_z, center_models);
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}
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}
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// --------------------------------------------------
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// Geometry helpers
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// --------------------------------------------------
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module rounded_box(x, y, z, r=0, center_it=false) {
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if (r <= 0) {
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cube([x, y, z], center=center_it);
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} else {
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if (center_it) {
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translate([-x/2, -y/2, -z/2])
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rounded_box_uncentered(x, y, z, r);
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} else {
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rounded_box_uncentered(x, y, z, r);
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}
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}
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}
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module rounded_box_uncentered(x, y, z, r) {
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linear_extrude(height=z)
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offset(r=r)
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offset(delta=-r)
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square([x, y], center=false);
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}
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module place_top_label(txt, x, y, z, center_it=false) {
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tx = center_it ? 0 : x/2;
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ty = center_it ? 0 : y/2;
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tz = center_it ? z/2 : z;
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translate([tx, ty, tz - label_depth])
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linear_extrude(height=label_depth + 0.02)
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text(
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txt,
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size=label_size,
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font=label_font,
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halign="center",
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valign="center"
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);
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}
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