I've been practicing using Future as a finish. It produces a lustrous shine that will look great on hot rods and customs. I do have a few of them to build. But my main interest is F1, Indycars and racing Sports Cars, some of which were raced in the 50s up through the present. The older cars don't have the finish that Future would give. Even some of the newer ones are not show car finishes. So I decided to do an experiment to see if I could come up with something a little more period correct.
I'd read the excellent article by Matt Swan http://www.swannysmodels.com/TheCompleteFuture.html
In his article, he mentions that you can use flat acrylic mixed with Future to give the desired amount (or lack thereof) of shine. His suggestions were:
1 part flat base to 3 parts Future = very flat
1 part flat base to 10 parts Future = flat
1 part flat base to 15 parts Future = satin
He also suggests using alcohol as a thinner for the Future. With that in mind, I shot 6 spoons, each with Tamiya Black Laquer and a seventh with Duplicolor Semi-Gloss Black. Then I mixed Model Master Flat Acrylic Clear FM02015 with isopropyl alcohol (3 parts flat clear to 1 part alcohol). I used that mixture to dilute the future in the following ratios: 1:5, 1:10, 1:15, 1:20, 1:30.
Here are a couple of pics of the spoons.
As you can see, the 1:5 and the semigloss are pretty close to each other. The 1:30 and the one with just black lacquer are close. The 1:15 and 1:20 appear to be about right for an older race car or older non-restored auto. This differs from Matts results somewhat but I'm sure the conditions were different for he and I.