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Expert's Corner — spray gun

When to Clean Your Spray Gun

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When to Clean Your Spray Gun

Here’s a frequently asked question. Do you really need to clean your spray gun every  single time you use it? Do you  need to clean it when you go to lunch? What if you are  putting it away for a week? Which coatings mean clean “right  away?” Here’s the scoop:  always clean your gun immediately if you are spraying a quick set up coating such as a  two  part urethane or epoxy paint. Clean it even if you are going to lunch. If you are  using a pigmented coating and are  finished with that color, clean the spray gun. If...

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Spraying Paint

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All spray guns will spray paint. A spray gun is merely a delivery device—like a brush. There are a few things you should be aware of, however, especially if you intend to spray latex paint with a spray gun you use normally to spray clear finishes. To get a reasonable amount of paint to come through the spray gun you will probably need to use a larger fluid nozzle and needle than you use with clear finishes and an air cap designed to atomize the thicker liquid adequately. You may also need a larger amount of air than you would...

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TIP: Door and Drawer Edges Under Sinks

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TIP: Door and Drawer Edges Under Sinks

Especially when spraying finishes, it’s common to get too little finish on the edges of cabinet doors and drawers. If these doors and drawers are installed under a sink in a kitchen or bathroom, splashed water will break through the thin finish, causing it to peel. There’s rarely anything you can do to fix this damage short of stripping and refinishing. So it’s important to get enough finish on the edges to begin with. The most common method of spraying doors and drawers is to lay them flat and spray from above. Typically, the edges are sprayed at a 45°...

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Apollo and HVLP - A History

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Apollo and HVLP - A History

You may not realize it but Apollo Sprayers, the sponsor of this website, is more responsible for HVLP becoming today’s dominant spray technology than any other spray-gun manufacturer. This is not to say that it wouldn’t have happened anyway, but Apollo did get it started. Spraying technology has been around for over 100 years. It has been based on high-pressure air produced by a compressor. The air is stored in a tank and fed to the spray gun through a hose. The high-pressure air then turns a stream of liquid exiting the spray gun into a fine mist and propels...

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TIP: Strain Water-Based Finish

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TIP: Strain Water-Based Finish

It’s always a good idea to strain a finish before brushing or spraying it to remove dirt and other unwanted particles. It’s especially important to strain water-based finishes because small bits of finish often solidify in the can, and rust that forms around the lip of the can may fall into the finish. Commercial strainers are widely available wherever paints and finishes are sold. These strainers are much easier to use than any homemade cloth system you may think up. Straining always involves using a separate container, which can be the spray-gun cup itself if you’re spraying, or a jar...

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