Spray Gun and Nozzle for Painting

What have you tried?

I have tried to find the viscosity of the paint and is 90 Krebs Unit.Thats all i know.Please help me find the pressure and the flow rate needed pls.Anyone can help me?Thks.

If you have not got the time to experiment and try things out forget about it. It can take years to perfect the art. Airbrushing is what you are after, I think, and there are only basic rules. Tools and instruments range greatly in price and ease of use. This will not be an over night success and only you can determine the outcome. There is more to it than just viscosity and pressure. Keep at it and surprise your self. I hope your not in a rush. Good Luck. Ky.

I spray miniatures using enamels using a Draper airbrush (pretty cheap - I can't remember paying more than about £25 GBP for it in 1998 retail prices) and a small compressor that has a relief valve set to 2.5bar. The air is filtered to 5μm to keep spiders out of the sprayed paint. Much of spraying enamels depends on getting the correct type and quantity of air-drying thinners into the paint mix, and the spraying technique: always begin spraying before the part and continue spraying beyond it, and always spray lightly and revisit, rather than spray heavily and risk runs.

Spraying water-based paint would be a little more delicate, as the water used as a carrying medium and diluent will take longer to dry than the thinners used in enamels.

Air-brushing is really an art form and a craft, which is best learned by experience. Practice makes perfect! Go on. Have a go! It's fun!

Hi Etzel!

I guess spray painting can only be possible for quick drying solvents, like lacquer or acrylic thinners. If you use a water based paint, the paint will run down the surface before it dries up and will not give you a good finish. Even turpentine or ordinary paint thinners will not work well with spray painting.

For more detailed information on spray painting, please go to the following page links;

http://www.madehow.com/Volume-7/Spray-Paint.html

http://findarticles.com/p/articles/mi_gx5205/is_1999/ai_n19125104

I've been doing both industrial and fine art for years. Trial and error are the best methods. You will eventually get used to what a starting point should be. And unless your doing one type of spraying on the same type of material every time, You will need more than one nozzle. Start with a thinner solution of paint and test spray a board or some other comparable material to what you are painting. If it looks good adjust your pressure to the minimum without losing fine coverage. Too much pressure and overspray becomes an issue. Not enough pressure and you may start to clog your jets. If coverage looks thin increase ratio of paint to thinner.