translate([20, 0, -2]) import("4x2.stl", convexity=100);
translate([-12, -61, 0]) import("Lego_8block.stl", convexity=100);


difference(){
    translate([-39, -33, -10]) cube([78, 66, 10]);
    translate([0, -10, 0]) sphere([0, 5], center=true, $fn=100);
    translate([0, -26, 0]) sphere([0, 5], center=true, $fn=100);
}

translate([-12, 51, 1]) rotate([180, 0, 0]) import("Lego_8block.stl", convexity=100);
translate([20, -10, 2]) rotate([180, 0, 0]) import("4x2.stl", convexity=100);
translate([0, -5, 0]) cube([78, 5, 15], center=true);
translate([0, 0, 0]) sphere([0, 5], center=true, $fn=100);
translate([0, 16, 0]) sphere([0, 5], center=true, $fn=100);