OpenSCAD - Open Box

gistfile1.txt

base_width = 50;
base_length = 30;
base_height = 10;
border_size = 2;
$fn = 50;


difference() {
	// Main bucket
	minkowski() {
		cube([base_width, base_length, base_height], center = true);
		sphere(1);
	}

	// Chop off top for creating flat surface
	translate([0, 0, base_height])
		cube([base_width + 5, base_length + 5, base_height + 2], center = true);


	// Creating smooth empty inner space
	minkowski() {
		cube([base_width - border_size, base_length - border_size, base_height - border_size], center = true);
		sphere(1);
	}

	// Chop off top for creating flat surface
	translate([0, 0, base_height])
		cube([base_width + 5, base_length + 5, base_height + 2], center = true);


}