Add a three hole punch peg bar design. Not as stable as the ACME punch, but way more available. With both sides punched carefully, this could be very useable.
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{
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"buy" : "https://links.sixteenmillimeter.com/qeRRdUIk"
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}
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$fn = 60;
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time = 0;
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L = 254;
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W = 13;
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H = 3;
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CENTER_D = 6.39;
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CENTER_H = 9.76;
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SIDE_D = 3.24;
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SIDE_L = 11.92;
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SIDE_SPACE = 108 * 2;
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module rounded_bar (arr = [50, 10, 10], fn = 60) {
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$fn = fn;
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cube([arr[0] - arr[1], arr[1], arr[2]], center = true);
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translate ([(arr[0] / 2) - (arr[1] / 2), 0, 0]) {
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cylinder(r = arr[1] / 2, h = arr[2], center = true);
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}
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translate ([-(arr[0] / 2) + (arr[1] / 2), 0, 0]) {
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cylinder(r = arr[1] / 2, h = arr[2], center = true);
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}
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}
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module animation_peg_bar () {
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rounded_bar([L, W, H], $fn);
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translate([0, 0, (CENTER_H / 2) - .5]) round_peg(CENTER_D, CENTER_H);
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translate([(SIDE_SPACE / 2), 0, (CENTER_H / 2) + .3 ]) round_peg(CENTER_D, CENTER_H);
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translate([-(SIDE_SPACE / 2), 0, (CENTER_H / 2) + .3 ]) round_peg(CENTER_D, CENTER_H);
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}
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module round_peg (D = 6, H = 9) {
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union () {
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cylinder(r = D / 2, h = H - (D / 2), center = true);
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translate([0, 0, (H / 2) - (D / 4)]) {
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difference () {
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sphere(r = D / 2);
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translate([0, 0, -D]) cube([D*2, D*2, D*2], center = true);
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}
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}
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}
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}
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module center_part () {
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difference () {
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intersection () {
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animation_peg_bar();
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cube([L / 3, 30, 30], center = true);
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}
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translate([L / 6, 9, 13 / 2]) cube([13, 13, 13], center = true);
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translate([L / 6, -9, -13 / 2]) cube([13, 13, 13], center = true);
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translate([-L / 6, -9, 13 / 2]) cube([13, 13, 13], center = true);
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translate([-L / 6, 9, -13 / 2]) cube([13, 13, 13], center = true);
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}
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}
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module three_parts () {
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translate([L / 3.2, 0, 0]) difference () {
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animation_peg_bar();
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center_part();
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translate([L / 2, 0, 0]) cube([L, 30, 30], center = true);
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}
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translate([-L / 3.2, W + 3, 0]) difference () {
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animation_peg_bar();
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center_part();
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translate([-L / 2, 0, 0]) cube([L, 30, 30], center = true);
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}
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translate([0, (W + 3) * 2, 0]) center_part();
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}
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//three_parts();
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rotate([0, 0, time]) animation_peg_bar();
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