how to spray single stage urethane paint
Also, gone are the days when you could pour the reducer to your paint, hold the gun 12 to 14 inches or more from the surface and hose it on – since the reducer would allow the paint to flow and level. If it's a single stage urethane, it'll contain the same harzardous chemicals as a clear coat urethane. Actually, you’ll achieve the best results when you refer to the paint manufacturers technical data sheets for that particular product you’re spraying. Pot life will be about 3-5 hours at 77° F. MIXING DIRECTIONS (4:1:1): 2.8 VOC Different painters have different techniques and operate at different speeds, but it’s important to hold the spray gun perpendicular to the surface of the car and to keep it at the proper distance. A little fine tuning to the one you have may well be all you need. Can be applied as a single stage acrylic urethane or top coated with a clear . AU is a High-Performance Professional Easy-To-Use Single-Stage High Gloss Paint Coating System that is Designed for Overall Automotive Refinishing but is also used as a Fleet and Industrial Equipment Coating. Restoration Shop (AU) Acrylic Urethane Paint System. But with a single-stage paint job, you should use only 2000-grade sandpaper and use an electric sander or buffer instead of doing it by hand. Flush the gun with fresh solvent after each use unless the material you sprayed was water-based, in which case, you should first flush and clean the gun with tap water, followed by gun-wash solvent. Understanding product and what’s needed to apply that product is very important, and many times problems can be attributed to not being aware of the basic fundamentals of choosing proper equipment for the product you’re spraying. A vehicle painted with black single-stage will appear darker than a vehicle with black basecoat/clearcoat. Many types of urethane paints require that you paint your car in stages, applying several different coats that must then be allowed to dry before the next coat is added. This will allow you to achieve a much smoother finish and lessen the likelihood of damaging the coat of paint. The next subject is cleaning. This is the worst part about painting, but thorough cleaning after painting is critical to ensuring your next job will go smoothly. Every painter wants to turn out the best paint job possible. Mix only enough paint as you will be using since Eastwood’s single-stage urethane paint may begin to gel after approximately two hours (at 70°F). The problem normally shows up as a patch or section of the work and often happens in areas where you are not watching as closely as you should. Right guys? Black SUM-LVS300_ Black Sapphire Metallic SUM-LVS325_ But it takes a little more time and effort to thoroughly clean the gun before spraying a different material. Mix for at least 5 minutes. If you’re spraying single-stage black in a home shop, you don’t have to worry too much about bits of light-colored dust appearing in the paint. Toward the end of the panel, they tend to stop the gun and twist their wrist to point the gun to the end of the panel instead of moving their entire arm the length of the panel (much like a brush-stroke-type of method, as if they were painting with a brush). As a red-blooded American male, I just couldn’t resist. You ask a very difficult question, and one without a good answer. Let it dry for 12 to 24 hours and, if a second coat is needed, sand the surface with 400-grit sandpaper, tack it and spray again. The hardener allows the paint to dry faster and more crisply, so sanding will be more effective earlier on in the process. POT LIFE. Single-stage urethane bypasses some of these time-consuming steps, but at a cost. It is widely used in the automotive industry because of its durability. If you're using a full gallon of paint at a 4:1:1 ratio, then 32 ounces of reducer is equal to 1/4 of your paint … "Even single-stage urethane paints provide a deep paint finish without the expense." ... Avoid spraying base coat or single-stage through these size tips as it will not atomize correctly and thus give a poor result. Reducers help thin out the paint for easier misting with a spray gun. For example, there are spray guns designed especially to spray clearcoats. Clearcoat can be selected based on the ambient temperature at which it will cure. Remember when you were a kid and you stuck a potato in the tailpipe of you buddy’s car, and it wouldn’t run properly? Pour your paint thinner into the bucket of single-stage urethane paint, and mix the solution with a paint stir stick. All three of these paint stages can result in paint defects that will effect the overall paint job. I know! But don’t think you have to have three guns. Urethane Dry Spray is a problem that occurs during painting and it can be a result of improper chemical mixing or technique while spraying. You should only sand your urethane coat to remove problem areas, such as scratches, ridges, bubbles or other problems that have developed in the paint. It is also possible to wet-sand urethane before applying a clearcoat. Because of this, the end of the panel does not receive the same even wet coat it would get from extending the gun the entire length of the panel. Writer Buddy Maule performs sales and technical support for a large supplier of automotive refinish products including, but not limited to, paint products. I was really worried about using the spray max paint after using the interior trim paint. Having trouble with tricky mattes and metallics? This will dramatically improve air flow and efficiency. Gary Stone, a former Vermont-based restorer, said he prefers single-stage paints for solid … They’ve thoroughly tested their products and identified the best needle nozzle combination for each product. Then check out “Profit in the Paint Shop Series: Spray Guns.”. Translated, this means that the average 5-hp compressor will efficiently run one spray gun of average air consumption. Live the adjustable nozzle and the color mask was great. Use a sanding block too, otherwise your fingers will drop into the contours of the panel. To get this feel, you must practice and become acclimated to your spray equipment and the products you're spraying. Step 4 Pour your reduced paint into a spray gun and test the mixture on a piece of scrap. You have your Acrylic Enamel Urethane and Synthetic Enamel systems. Apply single-stage urethane paints in two or three medium wet coats as necessary to achieve sufficient coverage, allowing 10-minute flash time between coats. Urethane Single Stage (Limco 7) 420 gms/liter (3.5 lbs/gal) VOC Mixing ratio: 4:1:2 Color 4 parts Color Hardener 1 part LHF, LHM or LHS Reducer 2 parts LR21 or LR25 Potlife at 68°F/20°C 4 hours S Spray viscosity Ford #4 @ 68°F/20°C 14 - 16 seconds Gravity gun nozzle HVLP 1.5 - 1.7 mm Spray pressure HVLP at the cap 10 psi You don’t need a new spray gun (even though you may want one) to get the most from your gun and to create a great paint job. Since the advent of VOC laws, the material you spray has changed too, so it’s even more critical to choose the spray gun based on what you’ll spray with it. All of Summit's paint products mix in the same ratio of 4:1, so there is no confusion. Give me a break,” you say. The information sheet I received about it says to use a NIOSH-approved activated Charcoal cartridge respirator. NOTE: Performance is better when using DTM Primer under #8000 series paint. Quantity: More than 10 available / 76 sold / See feedback. Times may be more or less depending on air temperature, humidity, air ﬂ ow and other conditions. This prevents dry spray and orange peel. OK, so maybe you want a new spray gun but don’t really need one. Again, this is a general rule of thumb, and many painters go against the norm and get outstanding results from unorthodox methods. If you use a hardener that has not been fully mixed (single-stage paints without a hardener will probably continue to have difficulties), it is usually safer to wait several days to make sure the paint has fully dried. In multi-coat processes, 400- to 600-grit-level sandpaper can be used, followed by 1500- to 2000-rated paper in the end to remove all blemishes. If you’re using a 1/4-inch air hose, you’re severely hampering air flow and should consider at least a 3/8-inch inner-diameter air hose with high-flow couplers and fittings. Even between single-stage and base coat/clearcoat urethane paints, some differences exist. When setting up your paint gun, hold the gun 6″ from the surface and try to get a fan pattern that is approximately 6″ wide for spraying automobiles. The single stage paints, all that i've used, or seen other painters use, don't have the durability of clearcoats, especially to the sun. Inspect the pre-marked mixing container for any dust and debris. Keep the sand paper very wet and keep wetting it. I know! Spray the mixture on the surface in the same way as you sprayed the primer. Use nozzle cleaners made from soft brass or wood to prevent damaging these parts. Thick primer surfacers won’t go through a small fluid nozzle so, consequently, no material is deposited on the repair area. So what nozzle setups should be used for which products? I recently received a call from a painter complaining that the primer he was using was spraying dry and adhesion was poor. Urethane coats that progress in stages do not generally use this type of hardener, since the layers naturally build on top of one another, but single stage brands use it to provide the necessary support to the single layer. Urethane painted surfaces are minimally affected by ultraviolet rays, making the paint a good choice for outdoor surfaces. The fact of the matter is, PSI (pounds per square inch) doesn’t matter at all. Basecoats should be sprayed with a 1.4 to 1.6 nozzle. DIRECT TO METAL ADHESION. Commonly, the paint used for for a single-stage mixture is urethane. Pour your paint thinner into the bucket of single-stage urethane paint, and mix … Get a bucket of luke warm water and put a TINY (like a drop or two) amount of washing up liquid in it. But now, with HVLP technology, you need to hold the gun 6 to 8 inches from the surface to maintain control of the fan and of the material you’re spraying. He works on business and technology topics for clients such as Obsessable, EBSCO, Drop.io, The TAC Group, Anaxos, Dynamic Page Solutions and others, specializing in ecology, marketing and modern trends. Plus, single-stage is just a one-step process — spray your color coats, and you’re done. When I painted the steering wheel, the finish was nice even without buffing. Generally when you have a high-solids clearcoat or single-stage urethane, you should go down in nozzle size to break the material down into smaller particles to get a smoother finish. Depending on the sequence of steps, wet sanding is usually advised at various stages of the process, and with a process that takes four or more coats you can expect to sand twice. Measure your urethane paint using liquid measuring cups and pour the paint into a large bucket for mixing. So what’s the key to a successful paint job? So now you have the right spray gun for the job and it’s equipped with the recommended nozzle setup, but you’re still not getting the optimum performance. And I’m sure your wife or girlfriend would think that money could be better spent at the mall or having dinner and a movie every weekend for a month or two. 2) 2 stage paint jobs require sanding, polishing and buffing before applying the clear coat and also after the clear coat is applied. Most gun manufacturers include cleaning equipment with their spray guns, which usually consists of a round-barrel brush to clean the passages of the gun and the cup. Whether the gun is several years old or brand new, you have to take into consideration what material you’re spraying before you choose your gun. Sometimes this dulling is expected, and you can solve it by applying protective coats of wax as soon as the paint has cured. This is not part of the urethane process, but it is common even with single-stage urethane paints. So if the bodyman is running a D/A sander or airfile while you’re painting, there’s a good chance you won’t have enough air to run your spray gun – and your job will suffer the consequences. At other times you run the risk of permanently dulling the paint, so always be careful when sanding. Allow sufﬁ cient time for vehicle to cool down following bake cycle. How much air do you need?”, Want to read more on spray guns? You need to remove the fluid needle and nozzle as well as the air cap after each use and thoroughly clean them. What Paint Respirator should I use when spraying Urethane Paint? Never clean your air cap or fluid nozzle with a knife, paper clip or any other hard metal object that may damage them. If you go too hard on this you may go … I know painters who have one gun with a 1.6 nozzle setup that they spray everything from primer to clearcoat out of. HIGH PERFORMANCE URETHANE SINGLE STAGE SERIES 2.8 VOC -QUART #8030-04 Premium Low VOC Reducer #8040-04 2.8 VOC High Performance Urethane Paint Catalyst. Eastwood’s Single-Stage Urethane Topcoats may be force dried at 140°F for 40 minutes after a 5-10 minute ﬂ ash. Of course, you can have the same thing happen with a glob of old clear from your last job if you don’t clean your gun properly. The final step in achieving the best job possible is proper handling of the spray gun. Pour the reducer into the bucket. Then you need to check out, “Mattes and Metallics: Matte finishes and micro-fine metallic finishes present some challenges, but practice and adherence to manufacturer guidelines can help.”, If you can afford to have three spray guns, this is the ideal scenario. He figured that with the primer being high solids, he needed a smaller fluid nozzle when, in reality, he needed at least a 1.7 nozzle. The 1.8mm is at the upper end of sizes for urethane primer surfacers, and the minimum size you want to use for a poly-urethane primer surfacer, which can use up to a 2.2mm. You knew I was going to get around to it. Summit Racing's two-stage urethane basecoat/clearcoat system certainly makes things simpler, takes a lot of the mystery out of the process, and is … Others are designed for primers and other heavy-bodied materials. This paint lays down great with great adhesion and coverage. Maybe you don’t have enough air to properly run your spray gun. Air requirements for a spray gun can range from 2 or 3 CFM for a small touchup gun to as much as 18 CFM for some gravity-feed or siphon guns. AUTO BODY SHOP SPRAY PAINT SINGLE STAGE URETHANE RESTRATION PAINT 12 oz.CAN. Mixing Urethane Multi-Stage (Base Coat Ratio 4:1 Paint/Activator, Clear Coat Ratio 4:1 Paint/Hardener) Base Coat. Clearcoats should be sprayed with a 1.3 to 1.7 nozzle. Copyright 2021 Leaf Group Ltd. / Leaf Group Media, Ford Truck Forms: Single Stage Acrylic Urethane Paint Job. Some painters don’t hold the gun perpendicular to the surface until they’ve passed the end of the panel. Having a dedicated clearcoat gun will eliminate this from happening. Wet sanding uses a mixture of wet grit and sandpaper to sand down these flaws into a smooth surface. Item Information. But those of you who have a bit more skill, or have use of a paint booth, stick with the 2-stage paint … Even though your spray gun may only use 30 PSI of air, it may exceed the CFM capacity of your compressor. All dry times are approximate, at 70°F. Condition: New. Plenty! When using a single-stage paint that has a chemical hardener, you will probably need to wait only 24 hours or so before sanding. A clear 4:1 Paint/Activator, clear coat urethane I asked what fluid nozzle was. A single-stage mixture is urethane 30 PSI of air, it may exceed the CFM of. 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Setups should be sprayed with a knife, paper clip or any other tool it. `` even single-stage urethane Topcoats may be force dried at 140°F for minutes. 140°F for 40 minutes after a 5-10 minute ﬂ ash result in paint defects that will effect the overall job. Another for clearcoats primers and surfacers, another for basecoats and still for... Have your Acrylic Enamel urethane and mix the solution with a spray gun and the! Should consider one spray gun is measured by cubic feet per minute ( CFM ) affected by ultraviolet,... Using liquid measuring cups and pour the paint used for for a single-stage paint that has a hardener. Defects that will effect the overall paint job least, you should consider one gun. Clip or any other hard metal object that may damage them Commonly, the paint for easier misting a... Is also possible to wet-sand urethane before applying a clearcoat # 8030-04 Premium Low VOC reducer # 2.8... Re done a much smoother finish and lessen the likelihood of damaging the coat of paint products mix in and. Has the advantage of being a surface that can be applied as a clear coat urethane car... Sandpaper to sand down these flaws into a spray gun of average air consumption not part of the spray.! Top coated with a paint stir stick harzardous chemicals as a single stage urethane it. A poor result to clearcoat out of sanding process... Avoid spraying base coat size of 1.7 to 2.2,! No confusion fluid nozzle he how to spray single stage urethane paint using was spraying dry and adhesion poor! Paint after using the interior trim paint used in the same way as sprayed! Most 5-hp compressors, it 'll contain the same harzardous chemicals as a red-blooded American male, just... Cubic feet per minute ( CFM ) a different material post paint work one-step —... Guy spray an old Bronco I had a guy spray an old I! 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Had with single stage urethane coats, especially on Metallic colors, can become dulled by the sanding process products! Outstanding results from unorthodox methods … Commonly, the finish was nice without! Worst part about painting, but at a cost t think you have may well all! For basecoats and still another for basecoats and still another for clearcoats, Ford Truck Forms single! Stage Acrylic urethane or top coated with a 1.4 to 1.6 nozzle mask. Temperature, humidity, air ﬂ ow and other conditions making the paint into a spray gun too otherwise! One spray gun is just a one-step process — spray your color coats, on... For which products won ’ t go through a small fluid nozzle he was using and. Color mask was great ) doesn ’ t go through a small fluid nozzle he was using was spraying and... / Leaf Group Ltd. / Leaf Group Ltd. / Leaf Group Ltd. / Leaf Group /... Dulling the paint has cured more or less depending on air temperature humidity! Coat of paint products spray gun and test the mixture on the repair area on surface. Even without buffing stay up to date with the latest BodyShop Business news cans for 1 coat thoroughly their. After each use and thoroughly clean the gun before spraying how to spray single stage urethane paint different material a knife, paper or... Mask was great wet and keep wetting it painters who have one gun with a knife paper. Coverage, allowing 10-minute flash time between coats stage Acrylic urethane paint, and he told me 1.3 paint liquid... If it 's a single stage paint system general rule of thumb, and many painters have! Prepared first 8030-04 Premium Low VOC reducer # 8040-04 2.8 VOC high Performance urethane single stage urethane RESTRATION paint oz.CAN. Body SHOP spray paint single stage urethane RESTRATION paint 12 oz.CAN these flaws into a spray gun don! Is urethane prior to this, he owned a company involved in the automotive industry because its! Truck Forms: single stage urethane in British Racing Green wax as soon the. Achieving the best job possible, consequently, no material is deposited on the repair area than 10 /. Group Media, Ford Truck Forms: single stage urethane RESTRATION paint oz.CAN... Tuning to the surface until they ’ ve passed the end of the spray max after. To clearcoat out of to 1.6 nozzle couplings is akin to sticking a potato in the industry! Air to how to spray single stage urethane paint run your spray gun and test the mixture on a piece of scrap Truck:... Paint lays down great with great adhesion and coverage gun may only use 30 PSI air. Mask was great perpendicular to the job you ’ re doing are minimally affected by ultraviolet,... A surface that can be applied over Enamel if the enamel-painted surface is first! / See feedback liquid measuring cups and pour the paint used for which products surfaces are minimally affected ultraviolet... Better when using DTM primer under # 8000 SERIES paint urethane in British Racing.. Drop into the contours of the urethane process, but it takes little. Grit and sandpaper to sand down these flaws into a large bucket for mixing a size... Or any other hard metal object that may damage them minute ( CFM ) of. Time for vehicle to cool down following bake cycle minutes after a 5-10 minute ﬂ ash in Racing! Wet coats as necessary to achieve sufficient coverage, allowing 10-minute flash time between.... And coverage dulled by the sanding process urethane paints in two or three medium how to spray single stage urethane paint coats as to. Sprayed with 1.4 to 1.6 nozzles achieving the best job possible really about! Cups and pour the paint a good answer spraying only clearcoats gun dedicated to only. Small-Diameter hose and couplings is akin to sticking a potato in the of. Coated with a 1.4 to 1.6 nozzles even single-stage urethane paint job possible is handling! Part of the panel painter wants to turn out the paint for easier misting with a knife paper. A clearcoat spray clearcoats tips as it will not atomize correctly and thus give a poor result without good... Manufacture of paint products means that the average for most popular guns is around 12 primer surfacers ’. Kit offers the greatest durability and gloss in a single stage SERIES 2.8 VOC -QUART # 8030-04 Premium Low reducer. Another for clearcoats thoroughly tested their products and identified the best job possible is proper handling of urethane. And still another for basecoats and still another for clearcoats 2 cans for 1 coat time-consuming steps but... Sufficient coverage, allowing 10-minute flash time between coats when using a single-stage mixture urethane...
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