Method for metal coating discrete objects by vapor deposition

A method for metal coating objects having first surfaces to be coated comprising:

• providing an evaporation chamber containing an evaporation source of aluminum or aluminum alloy having a first surface;
• creating a vacuum in the evaporation chamber;
• coating an object made of polymethyl methacrylate by placing the object to be coated in the evaporation chamber so that the first surface of the object is opposed to the first surface of the source of metal and is separated from the first surface of the source of metal by a distance which is the same as or less than a largest diameter of the first surface of the object to be coated, evaporating the aluminium or aluminum alloy from the evaporation source onto the object by supplying heat of the evaporation source to substantially uniformly heat the source, and maintaining the object stationary for about three seconds until the object is coated;
• and
• repeating the coating step for additional objects;
• wherein the first surface of the source of metal has an emitting area essentially at least corresponding in size to an area of the first surface of the object to be coated.