what solvent to use to clean hvlp spray guns

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If you lot're lucky enough to have access to an HVLP spray gun set, yous're probably eager to learn how to employ it. These powerful machines make many projects possible, once you know how to handle them. In this guide, we'll cover when and how to use HVLP spray gun, the 4 phases of using an HVLP spray gun, and even give you lot some tips for the best HVLP spray gun techniques.

Contents

• When to Utilise an HVLP Spray Gun
  • Atomization Explained
• Four Phases of Using an HVLP Spray Gun
  • Stage One: Preparing the Finish
  • Phase Two: Adjusting the HVLP Spray Gun
  • Phase 3: Spraying the Finish
  • Phase Four: Cleaning the HVLP Spray Gun
• HVLP Spray Gun Technique
• Decision

When to Use an HVLP Spray Gun

HVLP spray guns can be used to spray finishes onto a variety of surfaces, including wood, metallic, glass, and some plastics.

One of the all-time things most HLVP spray gun systems is that they can handle both large and pocket-sized projects. The best HVLP spray gun for woodworking allows you lot to stain or spray end, while acme HVLP guns tin can handle painting likewise.

HVLP spray guns are appropriate to use anytime you desire great results speedily.

They are frequently used by article of furniture makers and cabinet installers to get perfect results in a minimal amount of fourth dimension. They can be used to paint home interiors and exteriors, and are capable of applying stain or terminate to decks and fences.

HVLP sprayers can also be used for automotive work, including detailed and decorative painting or the application of clear coats.

They are able to apply smooth, even coats of finish quickly thanks to the miracle of atomization.

Atomization Explained

Atomization is how liquid paint, a agonizing stain, lacquer in different materials, or specific type of varnish becomes a fine sprayable mist.

When an HVLP spray gun is connected to a source of pressurized air, pulling back slightly on the trigger starts the menses of pressurized air. Pulling the trigger back further causes the fluid needle to choice upwardly liquid finish from the pigment cup. When the finish is ejected from the nozzle of the spray gun, it meets the stream of pressurized air and becomes atomized.

Each of the atomized paint particles is very similar in size and weight. When they settle on the surface, the result is the smoothen finish HVLP spray guns are known for.

Iv Phases of Using an HVLP Spray Gun

When spraying with an HVLP gun, you can't just pour in paint and pull the trigger.

First, whatsoever finish you lot use must be properly prepared. And then, you must adjust the controls until the spray and spray blueprint are to your liking. Next, y'all apply the end. Finally, HVLP spray guns must be thoroughly cleaned at the end of every work session.

Phase 1: Preparing the Finish

Adequately thinning your finish is key to success when using an HVLP spray gun.

1. Bank check the viscosity requirements of your spray gun. These should be listed in the materials that came with your gun, or you can find them online.
2. Determine the appropriate thinner. For waterborne finishes, sparse with h2o. For oil-based finishes, mineral spirits or paint thinner tin can exist used. Bank check the label of your stop for specific thinner recommendations.
3. Check the viscosity of your finish. Dip a viscosity cup in your unthinned finish, pull it out, and count the seconds until there is a gap in the catamenia of the fluid. If the viscosity is within the range recommended by your HVLP spray gun manufacturer, you do not demand to sparse it. If it's higher up the range, move to the adjacent step.
4. Thin by ten% and cheque the viscosity again. Make sure to utilise a clean container for mixing finish and thinner. If the cease is withal too thick, thin by another five%. Keep going until you reach the right consistency.
5. Tape your recipe. Make a note in your phone or in a notebook of exactly how much you thinned the finish, and what you used to thin it. You'll want to be able to replicate your recipe in the future if it performs well, or know what to adjust if there are problems.

Stage Two: Adjusting the HVLP Spray Gun

HVLP spray guns crave fine-tuning to get optimal results.

1. Practice on cardboard. No matter what cease you're applying, removing information technology isn't a elementary prospect. Never approach your workpiece with an HVLP spray gun until you're confident in the mode information technology's performing. Until and so, scrap pieces of cardboard are dandy for checking your spray book and spray pattern.
2. Add your spray medium. Fill the paint reservoir with your chosen finish, making certain it is accordingly thinned. Double-check that the size of your fluid needle is advisable for your terminate. Brand sure the fluid tip is large enough to accommodate your fluid, especially if you're spraying something heavier-bodied such equally latex paint.
3. Spray the cease on the paper-thin. Conform your spray gun to the manufacturer's recommended settings, and squeeze the trigger to start the spray. Detect the end as it exits the gun, as information technology moves through the air, and every bit it hits the cardboard. Release the trigger.
4. Adjust the gun. If the spray design is likewise wide, tighten the fan volume control knob. If it'southward besides narrow, loosen this knob. If your cease looks uneven, similar an orange peel, check that there is no air getting into the system through loose connections or worn hoses. If the cease is dribbling out of the gun, you may need to increment the pressure or loosen your fluid control knob.

Stage Three: Spraying the Finish

Follow these steps each time you spray with your HVLP gun.

1. Squeeze the trigger to starting time the flow of fluid. Make a long, sweeping pass, starting in one corner of your workpiece and moving to the reverse cease. Release the trigger.
2. Evaluate your results. If the finish was appropriately thinned and y'all used skilful technique, you should see a thin, fifty-fifty coat of your chosen finish.
3. Go along going. As long as you're happy with your results, y'all tin can keep spraying. Move your gun over so that the next spray will just barely overlap the first. Echo until the entire surface is coated.
4. Wait. Different finishes take unlike dry times. Lacquer is ready for a second coat within about xv minutes. Waterborne finishes have an hour or 2 to dry when sprayed. Oil-based finishes have longer, about six hours minimum.
5. Recoat. When the first coat is adequately dry, recoat every bit necessary.

Learn more than about how long different finishes take to dry out, such as different brands of stain, sealer like woods, and fresh coat of paint.

Phase Four: Cleaning the HVLP Spray Gun

Cleaning is an essential role of using an HVLP spray gun and must be done immediately after utilise.

1. Programme time to clean. Cleaning your HVLP setup shouldn't take more than 15 minutes once you've got the hang of information technology. Not but can dried finish damage your HVLP spray gun, getting information technology off is a pain. Make certain to dedicate time for cleaning at the terminate of every piece of work session while the finish is still wet in your gun.
2. Rinse with solvent. With the spray gun disconnected from the air source, swirl solvent effectually the paint cup and spray it through the gun. Use h2o for waterborne finishes and mineral spirits for oil-based finishes.
3. Detach the gun. Remove and soak all the spray gun components in solvent: spray tip, air cap, and fluid needle. Soak the nozzle of the gun as well.
4. Scrub. Use a bristle brush to remove all residue from all surfaces of the gun.
5. Wipe. Wipe all parts of the gun with a solvent-dampened rag.
6. Dry out. If h2o was used, wipe everything with a quick-drying solvent to foreclose corrosion. Leave the parts to dry before reassembly.

HVLP Spray Gun Technique

The right finish and right settings aren't all you need to get a dandy result from your HVLP spray gun. You as well need skillful technique.

• Apply the correct distance. HVLP guns should be operated six to eight inches from the surface you lot are coating. Maintaining this distance volition requite you even coverage and minimize overspray.

Note that conventional spray guns are used a bit farther away from the surface — viii to 10 inches. If you are used to spraying with a conventional gun or simply learning how to spray, check your altitude ofttimes using a ruler.

• Keep your arm straight. A slight bend in your elbow volition help go on your arm from getting tired. Maintaining a uniform altitude from the surface you lot are spraying is an of import component of getting great results. Leaving your arm out straight while spraying helps you keep that spacing consistent.

You can use a horizontal or vertical spray pattern, whichever makes sense for your project.

• Consider the grain pattern when spraying wood. If you are spraying finish on wood, y'all should spray the first coat across the grain. Subsequent coats of cease can be sprayed in the aforementioned management as the grain.
• Spray 'off' when possible. When painting walls and ceilings, you don't have the choice to keep spraying — you lot need to endeavor to release the trigger at just the right moment. For smaller pieces, you'll go a more even cease if you keep spraying until you clear the border of the workpiece and then release the trigger.

Conclusion

An HVLP spray gun tin be used to achieve groovy-looking finishes. The finish must be properly thinned to avoid clogging the gun and for atomization to occur. Using proper spray technique is also an of import consideration when spraying with an HVLP gun.

For the best results, test your HVLP gear up upwards on a piece of cardboard before spraying your workpiece.

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Source: https://sawshub.com/how-to-use-hvlp-spray-gun/

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