using Delta to make neater differences in OpenSCAD

Motor_Wire_Clamp.scad

thickness = 2.4;
width = 10;
wire_size = 5.8;
spacing = 2;
hole_size = 3;
bracket_width= 8;

$fn = 45;
Delta = 0.1;

difference(){
	cube([3*wire_size+2*spacing+2*(thickness+bracket_width), width, wire_size+thickness], true);
	for (side=[-1:2:1]) // -1,1
		translate([(1.5*wire_size+thickness+0.5*bracket_width+spacing)*side, 0, thickness/2+Delta])
		cube([bracket_width+Delta, width+Delta, wire_size+Delta], true);
	
	// drill holes
	for (side=[-1:2:1]) // -1,1
		translate([(-1.5*wire_size-thickness-0.5*bracket_width-spacing)*side, 0, -1.20*thickness])
		cylinder(d = hole_size, h = thickness+Delta*2, center = true);
	
	translate([0, 0, -thickness/2]){
		translate([0, 0, -wire_size/4-Delta])
		cube([wire_size, width+Delta, wire_size/2], true);
		rotate([90, 0, 0])
		cylinder(d = wire_size, h = width+Delta, center = true);
	}
	// outer cable holes
	for (side=[-1:2:1]) { // -1,1
		translate([(-wire_size-spacing)*side, 0, -thickness/2]){
			translate([0, 0, -wire_size/4-Delta])
			cube([wire_size, width+Delta, wire_size/2], true);
			rotate([90, 0, 0])
			cylinder(d = wire_size, h = width+Delta, center = true);
		}
	}
}