81 lines
2.2 KiB
OpenSCAD
81 lines
2.2 KiB
OpenSCAD
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// the height of the damper
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HEIGHT = 40;
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// the width of the walls between the pockets
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// thinner walls make a softer damper
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THICKNESS = 1;
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// the width of the pocket, relative to the thickness
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// bigger ratio make a softer damper
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POCKET_WIDTH_RATIO = 5;
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// amount of pockets in the outer wall
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POCKETS = 7;
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// amount of double-pockets inside the damper
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INNER_LAYERS = 2;
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// calculate some internals
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LENGTH = POCKETS * (POCKET_WIDTH_RATIO + THICKNESS);
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module wall(thickness, y_offsett) {
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translate([0, y_offsett, 0]) {
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cube(size=[LENGTH, thickness, HEIGHT]);
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}
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}
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module bridges_1(thickness, y_offsett) {
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translate([0, y_offsett, 0]) {
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for (p = [0:1:POCKETS-1]) {
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x1 = p * (POCKET_WIDTH_RATIO * THICKNESS + THICKNESS);
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translate([x1, 0, 0]) cube(size=[THICKNESS/2, thickness, HEIGHT]);
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x2 = (p+1) * (POCKET_WIDTH_RATIO * THICKNESS + THICKNESS) - THICKNESS/2;
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translate([x2, 0, 0]) cube(size=[THICKNESS/2, thickness, HEIGHT]);
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};
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}
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}
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module bridges_2(thickness, y_offsett) {
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translate([0, y_offsett, 0]) {
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// first bridge
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cube(size=[THICKNESS/2, thickness, HEIGHT]);
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for (p = [0:1:POCKETS-1]) {
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x = p * (POCKET_WIDTH_RATIO * THICKNESS + THICKNESS) + POCKET_WIDTH_RATIO * THICKNESS / 2;
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translate([x, 0, 0]) {
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cube(size=[THICKNESS, thickness, HEIGHT]);
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}
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};
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// last bridge
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x = LENGTH - THICKNESS/2;
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translate([x, 0, 0]) {
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cube(size=[THICKNESS/2, thickness, HEIGHT]);
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}
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}
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}
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// outer shell
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wall(THICKNESS, 0);
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bridges_1(THICKNESS/2, 1.0 * THICKNESS);
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// inner layers
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for (i = [1:1:INNER_LAYERS]) {
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y_ofst = (1.5 + (i-1)*4) * THICKNESS;
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wall(THICKNESS, y_ofst);
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bridges_2(THICKNESS, y_ofst + THICKNESS);
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wall(THICKNESS, y_ofst + 2*THICKNESS);
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bridges_1(THICKNESS, y_ofst + 3*THICKNESS);
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}
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y_ofst_las_inner = (1.5 + INNER_LAYERS*4) * THICKNESS;
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wall(THICKNESS, y_ofst_las_inner);
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bridges_2(THICKNESS, y_ofst_las_inner + THICKNESS);
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// outer shell
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y_ofst_shell = y_ofst_las_inner + 2*THICKNESS;
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wall(THICKNESS, y_ofst_shell);
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bridges_1(THICKNESS/2, y_ofst_shell + THICKNESS);
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wall(THICKNESS, y_ofst_shell + 1.5*THICKNESS);
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