It has always been non-conclusive when it comes to whether to use a black or white base coat for metallic colours. Quite frankly, I would rather not dwell on this topic for too long. Since I was painting the base and left with some metallic paint, thought that I could do a little experiment.
I prepared four plastic spoons and primed them with Surfacer 1000. After that, I painted gloss black and gloss white on two spoons each. At this point, I noted that I need to coat several layers before I fully cover the primed surface as compared to black paint.
I used Mr Hobby Super Metallic Plate Silver
I painted half of it and noted that it took me only a few passes of the airbrush.
For the white base, it took me a few more coats and the silver looks lighter in appearance.
A comparison between the two
Now, I painted the two spoons fully. If you noticed, both looks pretty much identical . However, I was aware of a very slight ting of dark tone on the spoon with black base, giving me the impression that there is weight like metal.
Top (Black base)
Bottom (White base)
I used GAIA Star Bright Gold for my next set.
Somehow the gold on the black base appears richer.
Left (White base)
Right (Black base)
I noticed that the gold on the black base appears richer and also gives me the impression of weightiness.
It seems that I can draw little conclusions from this experiment of mine. This is because I only used two type of paints instead of a variety of metallic paints.Nevertheless, metallic colours on black coats seem to look better to me. And I did save more metallic paint if I go for a black base because there is contrast between black/silver which makes it easier for me to paint.
I might be going more in depth to test the rest of the colours available but for now, I leave it as it is.
Black or white, I leave it to you guys to decide. To me, there is no right or wrong method, just adopt what you think is best for you. After all, we learn as we go. Who knows, you might be the next one to discover a new and better technique!