I'll put it here in case anyone else is interested.
width = 76;
height = 130;
draw_one();
translate([0, 0, (height/2)-0.01])
rotate([0, 0, 45])
draw_one();
module draw_one() {
hull() {
cube([width, width, 0.01], center=true);
translate([0, 0, (height/2)])
rotate([0, 0, 45])
cube([width, width, 0.01], center=true);
}
}
When you run it with the OpenSCAD customizer, you'll get a very simple user interface where you can specify the width and height in millimeters.
Attachment 15202
Edit: Sorry the code lost its formatting when I uploaded it :(