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Minimizing 'Fingering' in Spray Patterns

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11:40
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Airless Spraying Tips and Tricks | YOUR QUESTIONS ANSWERED!

What happens here

The quality and power of your pump directly impact the consistency of your spray pattern. 'Fingering,' which refers to an inconsistent or uneven spray pattern, often occurs when the pump struggles to maintain constant pressure. Inexpensive DIY pumps, typically found at home improvement stores, are generally not designed to spray thick coatings effectively. These pumps can experience 'dead banding' or 'hour-glassing,' where pressure fluctuates at the gun, resulting in inconsistent spray patterns. Professional-grade pumps with higher capacities (e.g., Titan 1140 vs. 440) are better equipped to handle thicker materials and longer periods of spraying, thus reducing the likelihood of fingering by maintaining stable pressure. Choosing a pump suited to the material's viscosity and the duration of work will help minimize this issue.

Goal: To avoid 'fingering' (inconsistent spray patterns), use a larger, higher-quality pump capable of maintaining consistent pressure, especially when spraying thick coatings. Inexpensive DIY pumps often struggle with pressure consistency, leading to uneven results.

Tools and materials

  • Professional-grade Paint Sprayer

What they say

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this person is essentially asking essentially essentially paraphrase don't mince words say like what's the relationship between the quality of your sprayer and the amount of fingering you get the larger the pump the more a sprayer is going to be able to keep up with tip size over a duration of time I think if you take say like a pump a do-it-yourself pump from Home Depot or Lowe's you know the pump isn't designed to spray you know thick coatings is decided to spray your average paints and it's the pressures pressure is probably gonna drop significantly on a pump like that that's not built to push you know certain types of products and you're gonna more likely run into fingering and stuff using you know in an expensive pump like that but if your I mean if we're talking professional lines from say that Titan 440 to a Titan 1111 for me I don't think there's gonna be the only a whole lot of difference there except the 440 is not designed to spray the block filler it's gonna depend how much you use the pump how long you're pulling that trigger things like obviously you let off the trigger like the pumpkin nothing great not a problem but the amount of times a 440 is gonna have to run versus the amount of times in 1140 is gonna have to run like in that fluent section it's just less we're on the pop so it really just depends how much you're painting and where you're ready to invest in yeah if I make sense to invest in a bigger pump that's kind of the reason that they make them I think you're gonna give now you're gonna you start getting into some real technical things about pumps like these really inexpensive pumps you know we'll have what you call dead banding an hourglass II where as they're pumping the pressures gonna rise and fall at the gun which is more likely to cause you know cause fingering in your spray patterns that are inconsistent and so the better quality pumps bigger pumps are less likely to have stuff like that so is the

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