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eps=0.01;
nut_dia = 5.3;
nut_depth=5.5;
bx=71.12;
by=35.56;
w=8;
h=5;
s=30;
d=w;
bh=8;
sd=4;
module qc(a, b, d, h) {
translate([-a, -b, 0]) cylinder(d=d, h=h);
translate([-a, b, 0]) cylinder(d=d, h=h);
translate([ a, -b, 0]) cylinder(d=d, h=h);
translate([ a, b, 0]) cylinder(d=d, h=h);
}
module foo() {
difference() {
union() {
translate([0, by/2, h/2]) cube([2*s+w, w, h], center=true);
translate([0, -by/2, h/2]) cube([2*s+w, w, h], center=true);
translate([-bx/2, 0, h/2]) cube([w, by, h], center=true);
translate([bx/2, 0, h/2]) cube([w, by, h], center=true);
qc(a=bx/2, b=by/2, d=d, h=bh);
qc(a=s, b=by/2, d=d, h=bh);
}
translate([0, 0, -eps]) {
qc(a=bx/2, b=by/2, d=sd, h=bh+2*eps);
qc(a=s, b=by/2, d=sd, h=bh+2*eps);
translate([0, 0, bh-nut_depth+eps]) qc(a=bx/2, b=by/2, d=nut_dia, h=nut_depth+eps);
qc(a=s, b=by/2, d=nut_dia, h=nut_depth+eps);
}
}
}
foo($fn=25);
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