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group() {
group() {
difference() {
sphere($fn = 100, $fa = 12, $fs = 2, r = 25);
cylinder($fn = 100, $fa = 12, $fs = 2, h = 62.5, r1 = 12.5, r2 = 12.5, center = true);
# multmatrix([[1, 0, 0, 0], [0, 0, -1, 0], [0, 1, 0, 0], [0, 0, 0, 1]]) {
cylinder($fn = 100, $fa = 12, $fs = 2, h = 62.5, r1 = 12.5, r2 = 12.5, center = true);
}
multmatrix([[0, 0, 1, 0], [0, 1, 0, 0], [-1, 0, 0, 0], [0, 0, 0, 1]]) {
cylinder($fn = 100, $fa = 12, $fs = 2, h = 62.5, r1 = 12.5, r2 = 12.5, center = true);
}
}
}
group();
}
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