Here's a mixture from my auto building days...
This "recipe" gives a nice glossy finish. I've only used it with Humbrol Enamels though, it also doesn't work for matt or semi-gloss finished...
- 25% Humbrol Enamel Gloss colour
- 25% Humbrol Clear Poly (Humbrol #35)
- 25% Clear Laquer thinners
- 25% Mineral Turpentine
I have found generally one coat will do when applying this mixture, but play around with it first and see what kind of results you can achieve.
Rudi