I tried Alcad2 and it is pretty good!

Philo

I have seen many videos of very serious car modelers who actually strip the toy like chrome off the plastic parts. They polish the plastic then shoot gloss black which as Don mentioned, has to be glass smooth with no roughness, Then the Alclad Chrome is sprayed on which as described on the videos produces a realistic metallic chrome finish.

I have a Heller 1930's fire truck that I want to build and I will be stripping off all the factory chromed parts and will be using the Alclad method.  

I guess it is ok but if I really need a part rechromed,I will send it to Chrome Tech or order a replacement from The Modelhaus.i might use it on an aircraft.

No buffing needed.  The key to a good Alclad job is meticulous finish of the undercoat.  The gloss black must be a show car finish.  Any roughness at all in the undercoat will show in final result.  To get the shiny gloss you put on a very, very thin coat of Alclad, which will NOT cover even the slightest flaw in the prime or undercoat.