$fn=30; use radius = 3; length = 135; thick = 20; width = 90; rotate ([45,0,0]) hull(){ translate ([radius, radius, radius]) sphere(r=radius); translate ([length-radius, radius, radius]) sphere(r=radius); translate ([radius, width-radius, radius]) sphere(r=radius); translate ([length-radius, width-radius, radius]) sphere(r=radius); translate ([radius, radius-thick, thick-radius]) sphere(r=radius); translate ([length-radius, radius-thick, thick-radius]) sphere(r=radius); translate ([radius, width-radius, thick-radius]) sphere(r=radius); translate ([length-radius, width-radius, thick-radius]) sphere(r=radius); } platine(cutout=true);