Don’t forget when you set the pressure at your gun always set with trigger fully pulled and open (it will jump up a little after you let the trigger go; that’s okay) If you don’t have a gauge on the gun you can add about 5-10psi for line drop and set it up on your pot (depends how far you are from your regulator) If you don’t have a gauge on your pot then you can add even more 10-20 psi from the compressor or filter unit. In addition, because this compressor is delivering its cfm @ 125 PSI, and the gun only uses 45 psi, there is plenty of air to spare – because cfm delivered by an air compressor goes DOWN as psi goes up and goes UP as psi goes down.However, if a gun requires 15.8 cfm, there is NO way to get a fine finish from the gun. Lower your air volume until the atomizing (droplets) of your paint becomes too course for your finish/preferences. These guns out performed others that I have used that cost 4 X as much, and that was for 1 gun. Hold the gun at a spread out hands distance (about 8 inches, or 22 centimeters). Give yourself time to get comfortable using a HVLP sprayer to apply stain to the wood.
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. There are HVLP guns that need as little as 7.5 CFM so you can get good results even from a smaller compressor. I guarantee you, if you spray cars, you’re going to run into a problem with the gun at some point.
So the first thing you need to do if you’re using water-base paint is to thin it. each of the sprayers includes a funnel-like viscosity cup for this purpose. I spray a very thin coat of the mixture of GAC 500 & Transparent Airbrush extender followed by my favorite topcoat: Using a very large pallet knife, I spread a thick layer of Heavy Gel Gloss. In any event, if you ever get any future inquiries regarding the used of a spray gun with boat bottom pain, the HVLP with the #5 projector is the answer. It will continue to turn on and off as long as you are using it continuously (like when you use a paint gun).
Please note that the chart offers you a starting point only as to the setup size to be used. Air pressure is an important adjustment to setting your gun to spray correctly. After I remove the filter, I hold the spray gun over the dishpan and pour some clean solvent down that filter hole. Before use I tested for any air leaks, I also adjusted spray pattern by running water through the gun and dialing in. Overall the build quality is average, but the gun is more than capable of painting a car. We do mostly paint wheels but i have done car/van bodywork with 0.8 and 1.0 tips with no problems at all.
The Rockler sprayer (available through our affiliate program with Amazon) doesn’t include any fancy features, just a powerful turbine and a no-nonsense spray gun with a pro-style metal tip. Airless pumps can be powered by different types of motor: electric, compressed air (pneumatic) or hydraulic. Wagner allows you to spray unthinned latex and thinner materials by providing two front ends in its PaintREADY System. It takes a while to know the ins and outs of paint work, but asking questions is the best way to learn. HVLP guns are largely used for painting cars, so keep that in mind when you read about using an HVLP gun.
People assume you need the most expensive guns to have a quality paint job…the sanding/prep and painter is what determines your finished product, not the gun. When setting up a spray gun, use the minimum air pressure that will achieve the required finish quality. A disadvantage of spray painting with high pressure compressed air is a much lower level of transfer efficiency compared to an HVLP. The pressure setting for the FL Gun you stated is suppose to be 23psi for the Dynamic Pressure setting.
Important Floetrol is not for thinning – it is a product that prevents the paint from drying too quickly – in other words, it is a ‘retarder’ – it slows the drying process allowing the paint to level more smoothly. The thinner (less viscosity) you get the PSPC or the more air you have at the fluid tip of the gun the more it will break up the PSPC. We are a supplier of some replacement parts for major spray equipment manufacturers. Fan Adjustment: Next open the fluid volume control about 3 turns for starters (at the back of the gun).
Features we like include the spray-pattern adjusting lever on the front of the gun, the pro-style metal spray tip and onboard storage of gun and hose. One piece of advice to anyone who buys a spray gun: Get the wrench as you will have to clean your needle after every batch. The shape of the workpiece and the desired paint consistency and pattern are important factors when choosing a nozzle. If you will do this every time, it will save you time and money in the end, as well as produce awesome quality paint jobs. If the spray pattern does not change when you as you turn the air cap, the problem is probably going to be the fluid tip.
I built the frame out of 1″ pvc pipes and then used plastic paint sheeting and just taped it on using blue tape and duct tape. They spray great even coverage ( of course when you get them dialed in ) The great thing about these guns is not only are they very reiable but if oe goes bad get a new set and get right back to work. You can start with large pieces of cardboard coated with a dark color house paint. In conclusion, whether using a conventional or HVLP system, the set up of the air compressor for spray guns and painting is crucial for the flawless finish required. Now you would know to clean the air cap and make sure all air passages are open.
Even though your spray gun may only use 30 PSI of air, it may exceed the CFM capacity of your compressor. I tried one of $40 guns from China-unless you thin paint 20% it will not happen, even with a 2.0 nozzle!! To spray acrylic (or latex as it may be advertised on US sites) you will need a minimum 4 stage turbine, but in reality you would be better with a 5 stage.
With the correct sized compressor, atomisation pressure of the spray gun and set up of the system components – there is nothing preventing a perfect paint job every time. Once you have the recommended gun size and settings, fine tune it by spraying a test pattern. Most HVLP’s won’t get enough CFM’s if you’re using standard air fittings, they’re too restrictive.
If you spray as you would with regular slow-drying paints, you may find that you can only spray a dry coat or you get orange-peel. A. You are correct in stating that there is no standard procedure for measuring the atomizing air pressure at the cap of an HVLP spray gun. It just took many passes with the gun since barely any paint would come out of the gun. That being said, I’m sure you could get the same smooth feeling if you were to sand between your coats of paint really well and apply more than one coat of polycrylic. Therefore a four gun set up will be adequate at line speeds of up to 4 meters per minute. The Black & Decker spray gun has an adjusting knob where the hose enters the gun.
Remember, every time is different and even environmental changes within the same paint session will necessitate a new spray-out droplet pattern test. Car body panels and bike frames are two examples where electrostatic spray painting is often used. 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.