HVLP Sprayer Techniques for Your Woodshop

when you're putting finish on a woodworking project it's really hard to beat the benefits that we can get from HVLP HVLP is high volume low pressure they work differently than guns that attach to an air compressor number one thing significantly less overspray from this system then you're going to have from a gun that connects to an air compressor another thing that I really like about what we're looking at here is in addition to HVLP and we're going to talk more about that we have a turbine here this is what's providing the air to our guns so it's a self-contained system what's great about this is that with a compressor we can get moisture and oil in the line if that has the opportunity to migrate into your gun into your finish onto your project that can be really bad so the promise with the turbine is that it's going to provide clean air so that we don't have that problem with our guns got two different setups here this is a bottom feed gun our other is a gravity feed gun the HVLP that we're talking about is compatible is going to work with either of these next thing we're going to do is have a look at the controls on the guns and what it takes to get them set up so that you're getting this great finish I keep talking about now in the world of accessories one of the things I think merits a mention is this flexible hose that's on the end of my turbine hose so this darker blue hose is the one that came with the turbine and it works fine if you're working on larger areas where you don't have to do a lot of movement a lot of intricate movement with the gun what I found spraying furniture and cabinets wanted to get to inside surfaces this whip has quite a bit more flexibility to it and made it a lot easier to get to those interior surfaces makes it a little bit easier to have a fluid motion of the gun so as I said next thing we're going to look at setting up the gun following that we're going to look at spraying a project talk about more benefits and how to set up our HVLP system next step let's look at what it takes to get the gun to operate the way we want it great I'm going to be spraying blue paint onto some white paper here so it's really easy for you to see the pattern of course all the setup that we do we can do with a clear topcoat the project we spray in just a little bit we will be spraying a clear topcoat on to that so let's just talk through the controls a little bit before the turbine starts up and I put my mask on so you can understand where we're going here got a handful of things to work with first let's start here with the nose of the gun this is called the air cap and one of the things we can do is get inside and change the nozzle that we're using based on the viscosity the thickness of the material that we're spraying so that's internally then the air cap right here when these ears are in a horizontal position the resulting fan is in a vertical position then of course if we do this just the opposite now coming around to the side of the gun there are control right here is going to let us very easily dial in the width of fan that we're spraying so maximum width and then if i dial that way down which you're going to see in just a little bit that narrows it down that would allow you to shoot say finish on just the edge of a shelf and nothing else so we'll go back to wide fan back here at the end of the gun this is our fluid control so as I dial this way in it reduces the amount of liquid we're going to get through the nozzle and as I dial it out we'll get more liquid you'll see that happen and then down here on the hose itself there's kind of a gate valve and that just like you would intuitively imagine controls the amount of air going to the gun so one of the things this will do is if I'm getting a lot of bounce back from my project over spray then I can reduce that amount of air so that I'm not getting so much bounce back off my work so let's go through we'll do some test brain here and I'll tell you where I'm at right now I've got that blue paint loaded I've got my fluid control dialed way in so we're going to get in very little liquid to start that's a good place to start to make sure that in your test pattern you're not just fire hose spraying your work so we'll start real dry and then we'll increase that as we go to get more liquid coming up I've got a helper going to turn on the turbine for me when we're ready and Jenny I think you can go ahead and hit it we're going to start at the top of the paper see what we get we're not getting enough to liquid we can open up the fluid control valve to allow more liquid to flow through remember that we can change the width of the sand this setting will dial our bandwidth down can change our air cap so the fan changes and then again we're getting a lot of bounce back you can change the amount of airflow all right Jenny so you can see it's very easy on the fly to make the adjustments that you need to make in order to really control the quality of finish that you're applying it's a great idea when you're spraying to start on test paper like this so that you can see the pattern that you're producing and again in this case it's blue paint to make it easy for you to see but if I was starting with a clear coat I'd be doing the same thing so fluid control with a fan air cap direction and again you can change that nozzle size as needed in order to make changes that you need for the viscosity of your finish and then finally our valve here that lets us control the airflow itself to the gun now let's have a look at spraying a pretty cool project I made I've got my walnut handkerchief table laid out here ready to spray we know the gun is all set so I'm going to kick the turbine on want to have the turbine remove from your finishing area so you're not drawing airborne finish back into the turbine so I've got it off to the side as I work through this you can watch for as I change fan direction depending on where I'm going change fan size to spray different parts so these things that we just talked about on the control side at this point I won't be messing with the air control that we looked at and the volume of liquid control because oh it should be set maybe a little micro adjusting once we see the finish go on the wood but they should be in a pretty good position already so just watch as we go and we'll get some finish on this walnut table you

Channel: WoodWorkers Guild Of America

Views: 86,909

Rating: 4.7064991 out of 5

Keywords: woodworking tips, woodworking projects, wood project, wood tips, woodworking lesson, woodworking how to, woodworking diy, wood working, wood work, woodworking tutorials, woodworking videos, woodworking class, HVLP Sprayer, Fuji Spray, HVLP, High Volume Low Pressure Sprayer

Id: LrBmztfJDXc

Length: 9min 51sec (591 seconds)

Published: Mon Oct 03 2016