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Posted by on January 3, 2007, 10:37 am
Thanks for the response Lawrence!
I think my technique is ok. The problem is that I am not getting an
even/uniform spray. When I spray I get 4/5 pronounced streams with a
significant gap between two of them. Its not terrible but its not good
enough to paint my interior doors. It might be good enough to paint my
door frames and windows though.
Lawrence wrote:
> terrence.nixa@gmail.com wrote:
> At half pressure there was considerable streaking/tails
> > in the paint pattern (4 or 5 main streams of paint). At full pressure
> > the streaking/tails were better but still not very good. I then tried a
> > 411 tip (0.011") but the spray with that was worse than the 515 tip.
>
>
> The proble may not be with your sprayer but with your technique. Not
> sure exactly what you mean by streaking and tails however. I have an
> Graco airless and have used it long enough to learn a few tricks don't
> know it they will help you.
>
> It sounds like you are applying too much paint too slowly. The idea is
> to apply very thin coats very quickly is what you should shoot for. A
> thin coat will dry quickly and keep you out of trouble with over
> applying. Massive overapplication is easy to do with an airless and
> can be your worst nightmare.
>
> You want to be sure the nozzle is perpidicular to the direction you are
> fanning the gun, up and down. You can get streaking when you are
> applying too much paint too slowly. To fix it you want to a lower
> pressure not higher. I like to use the lowest pressure my situation
> will allow.
>
> fan the gun back and forth across the surface very, very quickly.
> Paint the surface in overlapping passes. This will apply the paint
> more evenly. Do not trigger the gun continuously. Trigger the gun
> just before entering your pass and release the trigger just before the
> end of the pass. You will therefore trigger the gun with every pass.
> Keep the gun parallel to the surface rather than swinging it in an arc.
> Also keep your gun at a consistent distance about 12 inches or a bit
> more. Move back an inch or two if you see streaking.
>
> Another fix is to use an roller. It is something of a defeat, I know,
> to use a roller when you have commited to the sprayer but it's really
> no big deal. Do a wall and if it has streaks you should be able to
> even out quickly with the roller while the paint is wet. Stop after
> each wall to check for streaks and try to improve your technique each
> time.
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