Earl Bathurst Posted July 16, 2011 Share Posted July 16, 2011 Hi I have just lined a engine and need to varnish it to stop the lining coming off. I have revel matt varnish but how do I thin the varnish to air brush it? Scott Link to post Share on other sites More sharing options...
matto21 Posted July 16, 2011 Share Posted July 16, 2011 I've never used Revell varnish but most other varnishes can be thinned using normal thinners/white spirit to enable them to be sprayed Link to post Share on other sites More sharing options...
Karhedron Posted July 16, 2011 Share Posted July 16, 2011 Unless it is the acrylic varnish in which case water should be sufficient. Link to post Share on other sites More sharing options...
Earl Bathurst Posted July 16, 2011 Author Share Posted July 16, 2011 Its not acrylic. So what ratio of varnish to thinners would I use? Link to post Share on other sites More sharing options...
bertiedog Posted July 16, 2011 Share Posted July 16, 2011 I have used the Revell Varnish, (modern types),, and with an airbrush it should be about 60% varnish to 40% thinners, which should be good grade spirit thinners, Revell's own, Humbrol or Precision. The exact ratio depends on the airbrush type and pressure used. The Revell paint is standard synthetic enamel,and thins with white spirit or it can be thinned with cellulose thinners or lighter fluid (petrol), however this is not advisable with varnish, which is sensitive to these faster drying thinners and leaves white marks. or streaks.( I assume you are using matt) Gloss will work with lighter fluid, but you must try it out and learn the right way to use it, which is very light coats. To get a satin finish you can mix the gloss with the matt by experiment, and even with the standard Matt or Gloss, tests should be done on scrap cans etc., to find the best mix of thinners for you. Too thick, and it will need lots of pressure and may give a heavy coat, too fine and it will mist and dry in the air, giving a poor finish. Try to get it so that it goes on just slightly "wet" right under the airbrush target, but dries as you proceed. Take it slowly, never rush painting it takes time!! Any problems just ask... Stephen. Link to post Share on other sites More sharing options...
Leicester Thumper Posted July 17, 2011 Share Posted July 17, 2011 I have only thinned revell matt varnish to brush by hand and for heavens sake stir it well, mega well, shake it a tad when the lid is on, give it a good shake, then get either a match stick or a cocktail stick and stir it thoroughly for a couple of minutes, found in my experiance that it thins better the longer you stir it for, which I find strange, but could be the cold room i use for modelling! Link to post Share on other sites More sharing options...
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