Sprayguns.....

Discussion in 'Fiberglass and Composite Boat Building' started by Roly, Nov 5, 2011.

  1. Roly
    Joined: Jul 2005
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    Location: NZ

    Roly Senior Member

    Can anybody recommend a cheap gravity spraygun for polyurethane 2pac for topside painting.?
    I can remove the gravity feed & place my pressure pot line into the top if need be. I have done this with my Sharp with a 2.3 tip for hi build epoxy & it worked well. I have some crappy chinese guns 2.0 & 1.7 but they don't give me any confidence, altho I've been told they do make some good look-a-likes of name brands. I aint making a career outa this hence the cheap! Besides its "hand to mouth" getting this boat finished.
    Ta.
     
  2. waikikin
    Joined: Jan 2006
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    Location: Australia

    waikikin Senior Member

    On this side of the Tasman we get "Star" brand guns, generally copies of higher cost guns like Iwata etc. Here is some http://www.transquip.com.au/categor...-&-STAR-AIRTOOLS/STAR-GRAVITY-FEED-SPRAY-GUNS , your local panel shop/spray painters supplies should be able to help. I've had excellent results through to average with these guns but the variance would be up to this operator ;) Spend some time on set up & practice shots & on small items discipline yourself to a break for a cuppa tea between passes.Jeff.
     
  3. gonzo
    Joined: Aug 2002
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    Location: Milwaukee, WI

    gonzo Senior Member

    You can use one of those cheap gun copies and change the nozzle with the original. It will save you a lot of money and give you good quality.
     
  4. Frosty

    Frosty Previous Member

    Theres nothing wrong with cheap guns if they are clean. the bleed holes 4 on the nozle needs to be pristine.
     
  5. tunnels

    tunnels Previous Member

    Make a pressure pot and use one of those crappy chinese guns !! IT WILL WORK !! :p
     
  6. Frosty

    Frosty Previous Member

    I dont have any trouble with them. Can I suggest the proverb a poor workman blames his tools.

    You can even adjust air line pressure in the gun and the fan --what more do you want.

    If your painting metalic you need to know what your doing but with todays method of laquer its still easy.
     
  7. Roly
    Joined: Jul 2005
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    Location: NZ

    Roly Senior Member

    Cheers guys.
    I'll give the yet untried 2.0mm a trial on a test panel. It doesn't have line pressure adjust at the gun but I can easily rectify that. I've done no PU 2pac spraying & just assummed you needed Graco or De Vilbiss stamped on the side to get decent adjustment/ finish.
    I guess I tend to tar all chinese products with the same brush. If one thing falls apart
    they all are going to. Cheap=crap, not necessarily so.

    For the hibuild epoxy I used a pot pressure of 20psi & tip pressure of 60psi. Would it be similar for the PU? Guess I'll just have to trial a it to get good atomisation for the viscosity of the PU. I'll go for a sunny day with low humidity & manufacturer spec for
    thinners.
     

  8. Frosty

    Frosty Previous Member

    They just need cleaning like they all do.
     
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