Sounds like a plan G-fan. Go for it!
I did not even realize someone else has done this... I will still probably do this anyway
There’s a process called vacuum metalizing that’s used to chrome plate plastic parts. I believe that’s what Mod Thana used for his custom and there are often companies who will do it for you. Here in the US at least, there were people who would do it to order for folks restoring old toys or plating model kit parts. I’m not sure who currently offers this service but it might be worth typing it in your preferred search engine.
Wouldn't that be nice for a Member here to find someone who did that at a reasonable price. Just think of the neat customs that could be made. I envision a custom train that isn't necessarily totally plated but just certain parts of a train to highlight areas. I hope someone finds a place and let us know. Of course this would only be for personal use and not for someone who wants to sell and make profits off it.
I remember seeing ads for vacuum metalizing services in the old Scale Auto Enthusiast magazine way back before they were bought by Kalmbach and the internet was made up of hardcore computer geeks hanging out on BBS forums.
I’m not sure about how prevalent these services are now since that was back before some rocks had been formed!