use sticker_side = 25; tray_inner_side = 25 * 1.25 - 4; difference() { union() { hexagon_tray(side = tray_inner_side); for (i = [0:6] ) { rotate([0, 0, 60 * i]) translate([0, (tray_inner_side) * sqrt(3) + 2, 0]) hexagon_tray(side = tray_inner_side); } } for ( i = [0:3] ) { rotate([0, 0, 120 * i]) translate([-10, -sticker_side * 1.5, 10]) cube([20, sticker_side * 3, 20]); rotate([0, 0, 120 * i]) translate([0, 0, 12]) rotate([90, 0, 0]) cylinder(r=10, h=sticker_side * 3, center=true); } }