If you can, always ensure that you wear chemical or fume resistant mask to avoid inhaling the fumes. Once you are satisfied the surface is completely dry you can use some water to clean it. If you keep a rigid wrist when spraying, this will give you an even coating that will remain the same thickness over the entire surface area of your item. Prep Your Project A quality finish begins by properly prepping the surface of your furniture project. More in line of WB laq. Keeping your wrist stiff will ensure that you spray an even coat that is uniformly thick over the entire piece. I had to give this a try! Adjust the Volume Control Knob The pump is a Graco 210 ES. What Type of Spray Gun is Best for Polyurethane? Even after application, you need to take some caution to ensure that your job cures into a perfect finish, allow your surface enough drying and curing time. However, there are a few significant differences that could cause problems and discourage your switch from oil to water-based polyurethane. Applying polyurethane with the sprayer is quick, easy and the result is nothing less than professional. Then use the horizontal setting when you are spraying across a flat surface. I use 220 grit sandpaper to lightly sand the poly. Thanks for the help. These steps are as follows: The first thing you need to do in preparation for the application of your polyurethane formula is setting up your working area.eval(ez_write_tag([[300,250],'woodcritique_com-medrectangle-4','ezslot_0',108,'0','0'])); Usually, polyurethane contains some level of toxins, the chemicals when they come in contact with things like vegetation might be harmful. Graco 210 ES is a little on the wimpy side, but since WB's are typically thin it should do fine. For you to get the best possible result when using spraying as the method of applying polyurethane, ensure that you use the thinnest coat you can. Having read our post on the question ” Can You Spray Polyurethane?” Kindly let us know what you feel about this article or your experience applying polyurethane via spraying by commenting on the comment section below. If you stop halfway and then continue it will result in an uneven finish, which will be difficult to repair later. Watch for runs though. This means fewer coats are needed if you use a polyurethane that is oil-based. First, keep the sprayer 10″ to 12″ away from the surface you’re spraying. Horizontal/Vertical Many apply Polyurethane using a paintbrush, making it difficult to get that fine finish. Prior to spraying water-based materials, flush your sprayer with water. The HVLP spray guns such as Wagner Spraytech 0518080 Control Spray Max HVLP Paint or Stain Sprayer have a reputation for being the most consistent and reliable spraying tools that give thin coats. As a high-quality and demanding machine, the high-pressure airless polyurethane spray foaming machine has relatively high operating requirements. This means that the spray pattern sprays from right to left or left to right and you can use this technique for vertical surfaces. I have always brushed it on but I need someone with some experience to give me some advice. The results are in and I’m totally convinced. I will NEVER apply polyurethane with a brush EVER again! However, some polyurethane formulas might not need thinning. Apply Additional Coats Do you Need to Thin the Polyurethane before you Spray? I appreciate your input. This will typically require making faster passes across the product surface, as well as using smaller fluid nozzles (1.0 – 1.4 mm typically) or air assist airless tip sizes. The vertical spray pattern is perfect for spraying vertical surfaces like table legs. Doing it correctly will also save you a lot of time, not having to fix your mistakes. By leaving more polyurethane in one area than in another could result in your paint dripping or running. You can apply two or three more thinner coats until you achieve your desired finish. The water-based polyurethane requires several layers to give you the right finish, whereas the oil-based polyurethane needs fewer coats to obtain the same finish. Therefore, as you ready your working area to ensure that you cover all the plants like flowers within your working area, if you are working inside a room, ensure that there is proper air circulation to avoid inhaling toxic fumes from these compounds. Dynastus 33 oz Siphon Feed Spray Gun - 2.5mm Nozzle for Spraying Oil-Based or Latex Paints, with F… For spraying with polyurethane, you will need to use a tip that can spray between 1 to 5 inches wide. Then mix with the appropriate amount of thinner. Remember, if you have painted with oil-based polyurethane, it will take a lot longer to dry thoroughly. Any help will be greatly appreciated. Vertical Pattern: This spray pattern is used for spraying horizontal surfaces like tabletops. Another useful tip is to start spraying slightly before you reach your surface and then continue to spray right across the entire surface, and then go beyond that before you stop. This type of finish will improve the look of your wooden furniture and is guaranteed not to yellow, even over a long time. So, after all, is said and done, oil-based polyurethane is a better choice than water-based polyurethane for some projects. have a reputation for being the most consistent and reliable spraying tools that give thin coats. The air assisted airless spray gun is the perfect choice for this kind of application as it gives the best result. I can`t get a straight answer out of any one at the local Sherwin Williams about spraying … The necessary items for painting include paint and thinner, paint agitator, weighing equipment, polyurethane spray foaming machine and supporting appliances, paint and coating Testing equipment, etc. Coating environment condition control: Measure the temperature and humidity of the spraying environment to meet the coating conditions, and the coating operation can be carried out. Using Water-Based Polyurethane for Spraying. The HVLP spray guns such as Wagner Spraytech 0518080 Control Spray Max HVLP Paint or Stain Sprayer have a reputation for being the most consistent and reliable spraying tools that give thin coats. If you are going to use the spray gun frequently, purchase the one which suits your polyurethane well. It’s great for spraying inside corners and edges of table tops. In case you are spraying your polyurethane formula to a vertical surface, ensure that you are careful to avoid runs and drips. There was one thing in the instructions that caught my eye. Then I painted a dresser. This Graco Ultra Max sprayer features DEWALT® XR Lithium-Ion Battery System.