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Airless paint sprayer help: primer OK, but enamel has streaks/tails
I have a Graco Magnum DX sprayer with the 515 tip (0.015"). I also
added another 25' 1/4" hose section at the sprayer and coupled that to the 3/16" 25' hose that came with the sprayer. I am painting my trim and doors in my basement. The sprayer worked well for the latex primer (Sherwin Williams PrepRite Classic). I set the sprayer to about half pressure (middle of full and prime/clean). I then flushed the sprayer with water and then paint thinner and switched to the enamel (Sherwin Williams ProClassic Interior Alkyd Satin Enamel). 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 enamel is considerably thinner than the latex so I thought the smaller tip was going to help but it did not. I have cleaned the gun filter and flushed the sprayer again. Should I try using just the one 25' 1/4" hose or maybe just the 25' 3/16" hose? Should I try a 0.017" tip even though the max tip for the DX is 0.015"? Or is this sprayer just not going to work for the enamel? Thank you!! |
#2
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Airless paint sprayer help: primer OK, but enamel has streaks/tails
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#4
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Airless paint sprayer help: primer OK, but enamel has streaks/tails
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#5
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Airless paint sprayer help: primer OK, but enamel has streaks/tails
I did not strain the paint but I don't think I have a clog but I guess
its possible. I just talked to a painter and he said there are different kinds of tips. The black ones (what I have) are mainly for latex and the green ones are for finer stuff like oil base so I'm going to try a green tip. Pete C. wrote: wrote: 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. Did you strain the paint before pumping? Could perhaps have a clog? Do you have a viscosity cup to check the paint viscosity and thin as appropriate? Pete C. |
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Airless paint sprayer help: primer OK, but enamel has streaks/tails
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#7
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Airless paint sprayer help: primer OK, but enamel has streaks/tails
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