Blue Fire - Using Urethanes By AirbrushTricks in CraftArt18,957353Save PDFFavoriteIntroduction: Blue Fire - Using UrethanesBy AirbrushTrickswww.AirbrushTricks.comFollow More by the author: About: I'm an amateur custom painter that loves to share all the cool tricks that i learn along the way. More About AirbrushTricks »This is just a quick video showing how to knock out some realistic flames using urethanes.