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    hvlp question

    hey guys, those of you that know what im talking about this is directed to you...i painted my car a couple years ago and just got done doing some bod work so i was going to paint it again, and today i primed it. My question is, whenever i do either the roof or the hood, i get streaks in it. If i swing the gun from fender to fender, i have streaks that go that way, and if i go from the bumper to windsheild, i have streaks that way. Could this have something to do with either me spacing out the spray pattern too far, or maybe too close together?
    My baby laying down some power...

    http://www.youtube.com/watch?v=kd_Q8HSIyqA

    #2
    When you're spraying the hood or roof, is the gun tilted at all? This can cause the un-even spraying or "streaks" you're dealing with.

    My Accord History:
    91 EX 2dr : 91 EX 2dr : 91 LX 4dr : 93 EX 2dr : 86 LXi 2dr : 92 LX 4dr : 92 EX 4dr

    -Patrick

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      #3
      I'm not so sure what kind of "streaking" you mean... if that makes any sense... but it sounds like you may not be spraying straight on, as spraying at an angle can cause uneven coating

      if that's not it: are you sure no foreign substances got into your paint? cleaner/ solvent maybe? has it happened every time you sprayed a layer? and has it happened with your sealer AND your surfacer?

      also. what kind of paint are you using, just out of curiosity....

      thanks, i'm just trying to get you be more specific so we can weed out as many possibilities as, well, possible!

      ~*~Cass
      Last edited by i'm the girl; 08-09-2005, 12:24 PM.

      breathing is deadly underwater...

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        #4
        thanks for the quick respond cass. I have been trying to do it straight on, but i geuss when u are up on a ladder hitting the roof, maybe i could be doing it uneven...that makes a lotta sense now that i think about it. Tilting the gun at an angle would cause the paint to be thicker the closer it is to the gun, correct? I think this is my prob, i can try and get some pics of it for ya, any ideas on what i can do to correct the streaks already on the car?
        My baby laying down some power...

        http://www.youtube.com/watch?v=kd_Q8HSIyqA

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          #5
          Originally posted by high c
          any ideas on what i can do to correct the streaks already on the car?
          sand it down and start over! i'd say about 400 grit wet, but really it depends on how thick the paint is, and how long it has had to set on the car/ cure

          are you just on primer/sealer? or are you the surfacer step now?



          p.s. im on AIM right now if you want to talk directly
          Last edited by i'm the girl; 08-09-2005, 12:57 PM.

          breathing is deadly underwater...

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            #6
            right now i have just primed it. I was planning on sanding it wet with some 400 anyhow just to make it smooth, but will that help some of the streaks or am i going to need to take it ALL the way down?? I will prob do that tomarrow and maybe make up another batch of some sealer and see what i can do. I also might have been doing too narrow of a spray pattern which could have made me put too much paint down in a short amount of time.

            i dunno, this is only my 3rd time painting a car, so i still think i am ahead of the curve, and while i gotcha, any tips on clearing a car? My sn is youknowmeitsbigj hit me up sometime and we can talk direct
            My baby laying down some power...

            http://www.youtube.com/watch?v=kd_Q8HSIyqA

            Comment


              #7
              it depends on how thick the streaks are, and if your paint has runs in it

              i'm guessing you're saying youre just on the sealing part of the job (the first step) ... so you need to sand until everything is smooth and even then prime again. normally you wouldn't generally use but one good coat of primer sealer - but in your case it sounds like it will take 2

              if you're laid on too thick or your paint has runs you're goin to need to dry sand til its all even then degrease and clean and start over, in effect

              breathing is deadly underwater...

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                #8
                the only place there was a run in the sealer/primer was where i decided wtf, if it is already junk might as well try something, and tried putting it on really thick to see if it would make a difference....and yes i am on the first step (priming), and tonight i wet sanded the entire car (wet sanding the sealer i laid on there yesterday) to make sure it was really smooth.

                a question on painting in general, what i have noticed with my paint and also the primer is when it comes from the gun and hardens, it isnt smooth at all, it is kinda bumpy like textured (kinda like a hammered finish if you know waht that is) and rough to the touch. Could this be either me going to fast with it, or me putting it on too heavy, or too thin? Is this what 'orange peel' is when painting?

                sorry if i have confused or didnt express my question clearly , and another thing, when i put the sealer on, is it suppose to be reflective? Like, look kinda like a sheet of glass? Or is it suppose to be a kinda matte finish?

                i really appreciate the help you have given me! thanks a lot!
                My baby laying down some power...

                http://www.youtube.com/watch?v=kd_Q8HSIyqA

                Comment


                  #9
                  as for what the primer-sealer looks like, i never looked at it in direct light to notice if it was really shiny, usually its dull

                  and YES, that's "orange peel" ... and it happens in all situations with spray gun paint on a smooth surface - its the nature of the paint; just like no matter what you do with a paintbrush, you will always see brush strokes on your canvas unless you go over them later, if that makes sense - but as long as it is very shallow you will get rid of it by sanding and priming and sanding some more -- which is the point of sanding -- and you sand as smooth as possible so in the end your clear coat acts as a refective to hide the texture of the cured paint

                  ...to understand what i mean, go look really close at a stock painted car some time and you'll notice a bit of what we call "peel" under the clear and metallics and pearls and whatever ... it happens on all cars if you look closely enough, the problem is that not sanding properly (most especially color sanding in the color paint stages) that creates a clearly rough and visible "orange peel" and therefore a bad paint job in the end.

                  i hope that makes sense







                  P.S. heres a light smack on the head formaking paint runs on your car!!! you NEED to sand those down, and they get harder the to fix the longer they cure!!!

                  breathing is deadly underwater...

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