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Stesso

Select the Right Spray Tip

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8:29
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Overspray, How To Stop Before It Strikes

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What happens here

Spray tips have a three-digit code. The first digit indicates the spray angle (e.g., '5' in 515 means 50 degrees, by adding a zero to the first digit). The last two digits represent the bore hole size, determining the amount of material delivered. For smaller items like furniture or doors, use a smaller spray angle tip (e.g., tips starting with '2' or '3' for 20 or 30 degrees). For larger surfaces like walls, a larger spray angle is more appropriate. Match the bore hole size to the material's viscosity: thinner materials (like lacquers) require smaller bore holes, while thicker materials (emulsions, plasters) need larger bore holes. Consider using specialized low-overspray tips like Graco FF LP or Wagner HEA (High Efficiency Airless) for further reduction in overspray.

Goal: Choosing the correct spray tip based on the job type, material, and desired spray angle is critical for efficiency and reduced overspray.

Tools and materials

  • Airless Spray Gun
  • Technical Data Sheet
  • Various Spray Tips
  • Paint Material

What they say

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pattern that you're happy with. Number three, let's look at the spray tip. So you look at the job that you have, you look at the material that you're using and you have to decide what spray tip to use. Well, you can look at the technical data sheet to help you. But these are some other considerations. Well, the spray tip has three digits on it. The first digit tells you the angle and the last two digits tells you the size of the ball hole on the tip. Let's look at the angle first. The first digit lets you know the spray angle. So for instance, if you had a 515 tip, the digit five is telling you the angle. You work it out by taking the number five and adding a zero. A 515 tip is a 50° spray angle. So for a spray uh a spray tip starting with a two or a three, you would have two, add a zero to make a 20°, three, add a zero at the end for 30°. And that gives you the spray angle that you're working with. You'd also, this lets you know uh the actual uh fan of paint that's being delivered. In this case, you would take uh the first digit and you would double it. So three becomes six. And you would also add the zero and 60 is 60 uh cm. So you would get an idea of the angle of the spray and then also how much is actually hitting onto the surface that you're working with. When you are spraying small furniture or uh doors, you would want a smaller spray angle. Uh when you're dealing with large surfaces, you naturally want a larger spray angle. Then the material that you're using, thinner materials such as like a lacquer is is going to have a smaller ball hole and your thicker materials are going to use a larger uh ball hole. recent developments in technology. We have tips now that give us a reduced uh overspray. So something like uh the Graco, it brought out the FFLP tip which gives you less overspray. And from uh Wagner, we have the HA tip. Also from Graco, they brought brought out the line laser spray tip, which was customized to work for street markings. And this has also been shown to have less overspray than usual. Overspraying is quite a broad theme, so

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