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$fn = 8;
difference () {
cylinder(1.4, r=1.7);
translate([0, 0, 0.5])
rotate_extrude(angle = 360)
translate([1.6, 0, 0])
circle(r=1);
rotate_extrude(angle = 360)
translate([1.5, 0, 0])
rotate([0, 0, 90])
difference() {
square(1.5);
circle(r=1.5);
}
for (i = [1:8]) {
rotate([0, 0, 45*i])
translate([0.75, 0.75, 1.65])
rotate([0, -75, 45])
sphere(0.75, $fn=4);
}
}
translate([0, 0, 1.25])
sphere(r=0.5);
translate([0, 0, 1.85])
sphere(r=0.15);
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