More from How Its Made…the original glass master is coated with a primer and photoresistant layer, etched, then coated with nickel and vanadium. The metal layers are removed from the master, forming the negative die. The die is placed in a closed mould and liquid polycarbonate injected, forming the final compact disc (or DVD). A thin coating of aluminium is applied to one side of the disc and a coat of varnish and a screenprinted label to the other.
You might also enjoy this entertaining video that suggest CDs are made from cardboard and aluminium foil, stamped with library date stamps and edge sanded by hand – and is that guy’s knife blunt, or what?