Copper infused PLA prints...

Several detail items I printed in HO scale, https://4.bp.blogspot.com/-HrRLv2u6X...%2B2%2B033.JPG

More details, pictures and info at this link:
http://nvrr49.blogspot.com/2016/05/3d-printing-in-copper-model-railroad.html

is that using colorfabs copperfill ?

https://store.afinia.com/Specialty-P...506.1454984469

You can also finish your prints with metallic sprays, for example Montana Gold has a nice series including chrome, goldchrome and copperchrome.
https://pinshape.com/3d-printed-object/2602-balloon-dog

or you can get some reprapper tech with copper - just looks like copper wire - no finishing needed.

I do like the rough ceramic finish you get with copperfill and bronzefill before sanding. Great for stuff that needs to look like primitive ceramics.

That looks awesome! Always a fan of model trains so please share any more photos if you have them.