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Thread: HVLP gun from home depot

  1. #1
    Join Date
    Jan 2006
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    Southern Illinois
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    HVLP gun from home depot

    I bought HVLP gun from home depot to spray a couple of bookcases. I'm using Ben Moore oil paint and was trying to spray the primer. I couldn't get the spray bigger than an 1 1/4". I thinned the paint and messed with the knobs, but this is worse than a spray can. I gave up and brushed the primer on. Any ideas?

  2. #2
    Join Date
    Apr 2004
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    Livermore, CA
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    It probably requires a bigger needle/cap set for spraying thicker material like paint primer.
    Tim


    on the neverending quest for wood.....

  3. #3
    Join Date
    Feb 2003
    Location
    Conway, Arkansas
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    13,181
    yes....I have a very similar gun. you can't spray any kind of paint with that gun unless you buy a larger air cap and needle. It will handle shellac and lacquer just fine, but those have to be thinned as well.

    To best use the gun you need a pressure regulator mounted on the gun. Push 90PSI to the pressure regulator and then adjust the pressure regulator on the gun to around 8 to 10 PSI. Do this with any finish you spray with that gun to help atomization of the fluid better. I learned this by accident one night while trying to get a better finish out of the gun.

    In general, the thicker/heavier bodied finishes require larger air caps and needle sets. The thinner/lighter bodied finishes require smaller air caps and needle sets.

    It's all about a balance between fluid flow and air volume for proper atomization for a wide fan and smooth, wet finish. Too much air and you'll have a lot of "fog" while too little air will produce spattering and rough texture on the sprayed finish.

    Just my experiences is all I have to share. Hope I didn't confuse you even more.
    Thanks & Happy Wood Chips,
    Dennis -
    Get the Benefits of Being an SMC Contributor..!
    ....DEBT is nothing more than yesterday's spending taken from tomorrow's income.

  4. Dennis, does that type of gun blow air constantly, or only when you pull the trigger?

    My Wagner HVLP turbine system ... a real cheap one ... works OK, but there's a ton of air moving all the time. Really kicks up dust, and in some cases carries the finish to other parts of the job and deposits dried blobs of finish on it. The only way I can avoid that is to go very slowly with the gun, with very little material coming out.

  5. #5
    Join Date
    Feb 2003
    Location
    Conway, Arkansas
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    Frank,

    The one from the local BB store is an HVLP conversion gun. Only real HVLP guns come as "bleeders" or "non-bleeder" type guns.

    Bleeder - Air blows out the air cap if the trigger is pulled or not.
    Non-bleeder - Air blows out the air cap ONLY WHEN the trigger is pulled.

    A bleeder can cause you problems if you're not careful, by blowing dust and such on your newly sprayed (wet) finish.

    Clear as mud now?
    Thanks & Happy Wood Chips,
    Dennis -
    Get the Benefits of Being an SMC Contributor..!
    ....DEBT is nothing more than yesterday's spending taken from tomorrow's income.

  6. Thanks, Dennis. I know the terminology to look for now ... bleeder or non-bleeder. I take it the conversion guns are always "bleeder" guns?

  7. #7
    Join Date
    Jan 2006
    Location
    Southern Illinois
    Posts
    110

    Book cases are painted (with a brush)

    Well, the gun from home depot is a conversion gun.(It is not a bleeder gun.) It does spray the gloss paint, but I had to thin so much it was real runny.
    The people had Husky(Campbell) have a 1.6mm kit for thicker paint. It costs $79.00. I talked to two guys at home depot and told them exactly what I paint I was using. They both said the gun was okay.
    I have the bookcases painted and they look okay. I am thinking about taking the gun back.
    Is the PC HVLP gun any good?

  8. #8
    Join Date
    Feb 2003
    Location
    Conway, Arkansas
    Posts
    13,181
    Yea, the cap/needle sets are pretty expensive...when you can find them. I have finally solved my finishing problems, but more on that later tonight.
    Thanks & Happy Wood Chips,
    Dennis -
    Get the Benefits of Being an SMC Contributor..!
    ....DEBT is nothing more than yesterday's spending taken from tomorrow's income.

  9. #9
    Quote Originally Posted by Marion Rood
    Well, the gun from home depot is a conversion gun.(It is not a bleeder gun.) It does spray the gloss paint, but I had to thin so much it was real runny.
    The people had Husky(Campbell) have a 1.6mm kit for thicker paint. It costs $79.00. I talked to two guys at home depot and told them exactly what I paint I was using. They both said the gun was okay.
    I have the bookcases painted and they look okay. I am thinking about taking the gun back.
    Is the PC HVLP gun any good?
    Pc. Not for heavy oil base paint.


  10. #10
    Join Date
    Jan 2006
    Location
    Southern Illinois
    Posts
    110
    I am thinking I want to put a nicer finish on painted units. I try to let the homeowner deal with the finish, but this year I painted two built-ins and one set of kitchen cabinets. I need to figure this out for the next job--or find someone to paint the units.
    Thanks for all of the ideas.
    Merry Christmas,
    Marion

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