// 1.5"  x 2.25"
// 2.5" tall

height = 2.5 * 25.4;
width = 3.0 * 25.4;
depth = 2.0 * 25.4;


thickness = 4;

difference() {
    cube([width, depth, height]);
    translate([0, thickness/2, thickness/2]) {
        cube([width, depth - thickness, height - thickness]);
    }
    translate([(width-(2.25*25.4))/2, (depth-(1.5*25.4))/2, height-thickness]) {
        
        cube([2.25*25.4, 1.5*25.4, thickness]);
    }
    // remove the bulk for testing
    //cube([width, depth, height - thickness+2]);
};