GUN SETTINGS and TECHNIQUES for auto painting at home!

hey howdy howdy my name is Chris and welcome to garage noise this channel is dedicated to helping you with your repair or restoration project teaching you everything you need to know about paint and body repair and today we're talking about painting we're talking about gun adjustments and how to produce less overspray and use less materials when you're painting at home so I'm going to share with you some different spraying techniques and how to set up your gun to produce less overspray nobody wants a bunch of overspray in the garage so I'm going to share with you how to limit that overspray and still get a beautiful looking finish we're also going to be trying out the segola 3300 GTO I just got a new cap which is the tech cap and a new needle set so it's a 1.3 tip and needle set this is a conventional gun it uses about 9.5 cfms of air conventional gun might be what you're using at home so I'm going to share with you how to adjust that gun and some different spraying techniques so you can get less overspray darris's went ahead and already pre-prep this bumper now this was a raw bumper raw OEM bumper the way he prepped this is he washed it with isopropyl alcohol and then he sanded over it with a gray scuff pad he used a product called Bulldog prep paste an abrasive paint that you use with water and the gray scuff pad to sand every inch of this bumper cover so we get good adhesion because it's very important when you have a raw bumper that you get good adhesion the next thing we want to do is to mix up our 2K sealer so let's do that now okay this is a sealer we're using today is the U Pull 2253 this is a high Build primer that can be used as a sealer so quickly this mixes up four parts primer one part hardener or activator and two parts urethane reducer so we have our primer we have our activator and this is the reducer we're going to be using today okay quickly here we're going to mix up our sealer we're going to find the four to one to one mixing ratio now we're mixing it four to one to two so we'll have to double this last amount we'll put in our hardener our activator urethane reducer this is really thick so you want to make sure it's stirred up really well it's important to seal a raw bumper for adhesion the next step after we get this mixed up is we're going to wash that really well with some isopropyl alcohol I'll use a mic clean microfiber towel we'll wash it and then we're going to spray some adhesion promoter over it this is the adhesion promoter we're using this is Bulldog adhesion promoter I'll leave links to all these tools and products that I use in the description field tighten down the ring Okay so we've tighten down the ring to the cap now we're ready to go now let's talk about our gun adjustments when we're spraying our sealer in order to reduce our overspray we need to reproduce the air pressure and the fluid volume the air pressure and the fluid volume so we're going to set this air pressure at about 20 around 22 PSI to start we'll see how that works now as far as the fluid volume this is the fluid volume right here it's completely closed we're going to turn it one full turn two full turns and then a half a turn we'll see how well that works if we have enough fluid to get a nice smooth sealer Purple alcohol here clean microfiber towel we're just going to wet this down wash it really good and then we'll spray our Bulldog over it now we want to spray on our Bulldog now this stuff is very toxic make sure you wear a respirator when you do this but this is just an adhesion promoter we're going to get one good coat over the entire bumper so we know we have good adhesion especially on the edges and the places that are covered by moldings like even in here we're going to make sure that's all covered okay so we're going to spray a coat of sealer on this and I'm just going to put a medium to wet coat on it and we're going to spray this just like we're spraying paint so we're going to be about I like to spray about five to six inches away I'm gonna have a consistent speed and a consistent distance from the panel at all times and so I'll start on one end of the bumper and I'll work my way over to the other I'm going to lessen this air pressure a little bit that's a little bit too much air pressure thank you [Applause] so I lowered the air pressure even more because I wanted less overspray so I've got it at about about 12. okay that's sprayed nice and smooth there's not a bunch of overspray in here you can see and it really sprayed it nice and smooth nice and smooth so that's all I need for the sealer now I'm going to let this flash off for about 15 minutes so basically what I'm letting it do is cure for about 15 minutes okay so we got our sealer on I'm just feeling over but it's got a few little particles of dust on it so I'm going to lightly go over it with this sandpaper this is like a 800 grit it's a flexible Sun Mite sandpaper really good sandpaper lasts a long time we're just going to lightly scuff over this to knock down any particles of dust this is a this is something when you're when you're not spraying in a booth that sometimes you have to do to limit the overspray that we're creating I'm going to reduce the air pressure to 15 psi I'm going to turn my fluid volume to two and a half turns out from closed we're going to have our fan pattern wide open we'll go ahead and spray like that and we can make any adjustments we need to with our speed and our distance now I can always adjust that air pressure up or the fluid volume up if I need to but the goal is to make our adjustments and our speed and distance so we can keep that overspray at a minimum there is a trade-off in your speed when you limit your air pressure and your fluid volume but that's just something that you're going to have to deal with if you want limited amounts of overspray now there are some techniques that you can use to speed that up and we'll go over that when we get to clear coating so if you notice I'm spraying quite a bit slower than I typically would now I personally find it a little difficult to paint this slow on our next pass when we do our next coat of Base I'm going to decrease my distance to the panel so I can speed up my passes and spray this bumper just a little bit quicker the segola actually sprayed really well at low pressure and low fluid volume the tech cap and the 1.3 tip and needle set really laid down a nice silky smooth base now we're ready for our second coat of Base we're just going to do two coats of base on this since it's Black and as you can see you'll see me start to spray a little bit closer and move a little bit quicker across this panel we'll let this flash off for 15 minutes after we get our second coat of base on here and then we'll talk about how we're going to adjust our gun for a clear coat and low overspray I have to say that even though the sugola is more of a conventional style gun it really did a good job at operating at a low air pressure and still producing a silky smooth base coat finish with very little overspray now I do prefer this Tech cap over the HVLP cap and that may have a lot to do with it okay I just tacked this off we're ready to spray our clear coat now as far as our clear coat we're going to overlap 75 to 80 percent I've got my fluid volume at two and a half turns out the fan pattern is wide open so let's just check this two and a half turns out one full turn two full turns and a half okay we'll see I might bump that up a little bit let's spray this at about 24 PSI so I'm gonna go ahead and try and spray this without adjusting my air pressure my fluid volume if I need to make any adjustments I'm going to use my speed and my distance to do so now if you're doing this at home and you're painting a bumper or you're painting something at home do a test panel just do a test panel play around with your air pressure your fluid volume your speed and your distance and get a good feel for it before you start spraying your part on your first coat of clear coat you don't have to be concerned about making it absolutely perfect basically you just want to introduce that clear coat to the surface you want to evaluate how it's spraying onto the panel and kind of get an idea of what kind of adjustments you can make so I know that I'm going pretty slow here so I know the adjustment I'm going to make is I'm going to move a little bit closer to the panel so I can spray this bumper a little bit quicker but as you can see we've definitely reduced the amount of overspray we're producing just by doing some gun adjustments and some technique tweaks after the first coat it looks pretty good kept it at two and a half turns out I'm actually actually at about 21 PSI on the air pressure we're not trying to make it perfect on the first coat and it's actually pretty clean couple little particles of dust we're gonna let this flash off for a little bit we'll slick it out on the second coat so here's where you'll start to see me decrease my distance and increase my speed so I can spray this bumper more efficiently I've got a good feel for how this clear coat is going to lay down I didn't make any adjustments on my gun just my speed and my distance this actually is a much more comfortable speed and distance for me so let's go ahead and finish up this final coat of clear we'll take a good look at it and I'll give you my final thoughts came out beautifully I like the tech cap in combination with the 1.3 tip you don't have to produce a ton of overspray with this gun so here's after the second coat it's all finished up we got a little a little dust dropped in there but that'll just polish out overall the Finish looks beautiful I really love how this to go with sprays if you look I don't know if you can see it here but you look in that light nice and glassy and if you notice so I adjusted how that clear coat laid down with my my speed and my distance so it's really hot today over 100 degrees so I I'm using a slow activator in my clear coat but I had to spray a little bit closer and speed up with that low air pressure and the low fluid volume to get a nice glassy finish but it worked out well it didn't produce a ton of overspray of course there is overspray there's going to be overspray whenever you're painting but we limited the overspray by adjusting that air pressure that fluid volume and then adjusting our speed and our distance to get the finish that we were looking for I hope you enjoyed this video I hope you found it helpful if you did consider subscribing to the channel and liking this video I appreciate each and every one of you watching and we'll see you next time on garage noise to build your skill click on one of these videos now

Channel: Garage Noise

Views: 4,838

Keywords: Garage Noise, sagola 3300gto paint gun, settings for low overspray, clear coat, auto painting, paint your car at home, diy auto painting, how to, auto painting techniques, how to paint acar, adjust your paint gun for low overspray, paint and body work

Id: G9IAWC8NjSI

Length: 13min 30sec (810 seconds)

Published: Mon Aug 07 2023