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group() {
difference() {
group() {
group() {
multmatrix([[1, 0, 0, -5], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
cube(size = [10, 5, 5], center = false);
}
multmatrix([[1, 0, 0, 0], [0, 1, 0, -5], [0, 0, 1, 0], [0, 0, 0, 1]]) {
cube(size = [5, 10, 5], center = false);
}
cube(size = [5, 5, 10], center = false);
}
}
minkowski(convexity = 3) {
difference() {
cube(size = [25, 25, 25], center = true);
group() {
group() {
multmatrix([[1, 0, 0, -5], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]) {
cube(size = [10, 5, 5], center = false);
}
multmatrix([[1, 0, 0, 0], [0, 1, 0, -5], [0, 0, 1, 0], [0, 0, 0, 1]]) {
cube(size = [5, 10, 5], center = false);
}
cube(size = [5, 5, 10], center = false);
}
}
}
sphere($fn = 12, $fa = 12, $fs = 2, r = 1);
}
}
}
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