Dry matalics as i spray?????

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  • April 23, 2014 at 1:34 am #46417

    Am spraying spies hecker solven am sprying colors with a lot of matalics and i feel like in some areas of the panels are rougher than other its not smooth all the way like if the matalic is dryin to fast .. I sand it than re base to get it out but i dnt really understand why its happening wat do u guys think???

    April 23, 2014 at 3:57 am #46418

    What gun and settings,what temp are you spraying at and what temp of reducer are you using?When I used solvent basecoat in a downdraft I always used slow or extra slow depending on the job size no matter what,Thats what it sounds like to me,too fast of a reducer,too high of pressure,too small of fluid tip,any or all of these things.

    April 23, 2014 at 5:19 am #46419

    Thanks yea i thought it might be the reducer am using iwata supernova base gun spraying at 19/20 psi . At 78 degree temp.. Using medium reducer.. Am gonna try to use a slower reducer and opening up my fluid tip a lil more am using a 1.3 tip

    May 4, 2014 at 5:24 pm #46559

    Hi mate what roughly is the difference in time drying solvent paint between using a slow reducer to a fast one? I’m using ir lamps

    May 5, 2014 at 12:35 am #46560

    it’s best to use the slowest reducer you can on metallics

    May 5, 2014 at 12:51 am #46561

    Is there a major difference between dry times from fast to slow in solvent base coat?

    May 5, 2014 at 4:08 am #46562

    Yes

    May 6, 2014 at 5:27 pm #46570

    In my experience rough patches in the basecoat come from holding the gun too far away, flicking at the end of your pass or while blending, too much air and/or too little fluid. Even though fast solvents do flash very quickly, if everything else is right they do allow the paint to melt in on a previous pass. 78 deg F (25C) isn’t hot, in fact near to optimum, so should be within the range of your medium solvent. Slower thinner will give the flakes time to settle, giving a more uniform look, which is why the guys above recommend use, but can work against you giving a darker colour on metallics.

    If you have the capacity to increase fluid flow then I suspect that this may be a large part of your problem. Unless there is a specific reason not to, I run any gun with the fluid fully open, i.e. adjustment turned in until resistance is just felt against a fully depressed trigger. I’d try this first, making sure that your gun is always perpendicular to the panel and using the trigger to blend on an inward pass rather than turning the gun on an outward pass.

    June 19, 2014 at 5:57 am #46835

    wow that makes perfect sense I can picture everything ur saying am gonna try that out thanks man

    June 22, 2014 at 5:56 pm #46864

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