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 In Finishing

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1. The two primary sources of air for a spray gun are a compressor and a turbine. Besides size, the key difference is how much air pressure each produces.

How to choose a spray gun.

A spray gun is a tool that turns a stain, paint, finish or other liquid material into a fine mist—a process called “atomization.” It then propels the liquid onto a work object. Spray guns vary in type and quality, but each is designed to produce the finest atomization possible for the money in order to create a minimum of orange peel (a three-dimensional effect caused by the fine mist not totally flattening out on the surface).   

2-4. The three primary spray-gun configurations are a cup under the gun, a cup on top of the gun and a separate pressure pot that’s attached to the gun by a hose. The first and second configurations can be powered by a compressor or a turbine. The pressure pot for the third has to be powered by compressed air.

All spray guns will spray all stains, paints and finishes, and all stains, paints and finishes can be sprayed through all spray guns.


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