OK Phil, now we can be on the same page.
I thin mine with lacquer thinner. Over there it's got a different name and I got a senile attack and can't remember it. It helps speed up the drying time. Normally they take a long time to dry, but the lacquer thinner cuts it down to a round 24 hours. then you can spray another coat with out problems. BUT I would wait longer if you are masking. I normally let all my paints cure for several days, before I ever mask. When thinning I usually/normally just do it by eye, no magic formular, as I find each tin seems to be a little different.
I normally use the old fashion eye dropper system.... I fill my cup about 1/2 way with thinner, then add the paint, mix it, then spray a few test patterns on card/foam board, and adjust accordingly. I really don't have a special mixing ratio, but basicly spray all my paints a lot thinner and with less pressure than 90% of most modellers. The small amount of lacquer thinner has never caused any problems for me on any manufactures plastics.
Good luck. It's all practice and experiment till you get the feel for them..... If they weren't so hard to get over here, and so expensive when you do, I'd use the more for when I do aircraft. Totally ends the needs for gloss coats.
I understand the White Ensign makes a good line of paints along the same lines as extracolors, (gloss and semigloss) but haven't used these, so can't comment on them.
OH Phil the above applies to the old original extracolors..... the ENAMELS..... I have never tried the newer acrylics, so can't comment on their use.
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