Understanding Airless Sprayer Tip Sizing

interior wall tips right now. So, you kind of have a couple scenarios when it comes to the interiors. When we're doing new construction, we're trying to just paint and paint fast. And I've got a lot of experience spraying. And I typically use a 1221 tip to spray the whole inside of an interior of a new construction home that's a brand new home that's got bare drywall on it. Use a 1221s to spray the walls, ceilings, and even the closets. If we're spraying uh just a house that's an existing house doing a repaint, like on a rental or something like that, we're typically going to break out a 619 tip to spray the interior of a rental. And we definitely like those bigger tips because um you're not going to get as much flashing on the interiors when you're spraying them if you're using a bigger tip. You can use a lot more tip paint, but you got to um move a lot faster, too. Good job. Oh. Oh, that was hard. I videoed it. Now, some of this the tip sizing when you start to get into those really uh wide tips like the the twelves and the sixes, you've got to have a lot of experience spraying before you actually jump to one of those. It's really best if you don't have a lot of experience. If you're a brand new painter or you're just a do-it-yourselfer on the outside of the house, you should just stick to a 515. If you're on the inside of a house, you should stick to a 517 until you've got a lot more experience and you can handle a wider fan and a more volume of paint. And I'll discuss just a little bit about the tip sizes, the numbers, and what they actually mean to help you select the right one. So, when it comes to the tip sizing, say for instance, you've got a 515. The first number, the five, when you double that, that number, that's the actual fan width that tip will throw out when it's 12 in from its surface. So, from a wall, if you're 12 in away from a wall, a 515 is going to throw out a 10-in fan width spray pattern. So if you're using a 1221, you're actually going to have a 2T a 24 in fan width pattern when you're actually 12 in away from the surface. The second two numbers, so you got five and then the 15, that's the orifice size. So a 310, the orifice size is so big, it's really small. A uh a 515, the 15 is even bigger. A 1221, you got a 24 in fan because 12 is doubled. Then the 21 is the orifice size. So 21 is a lot larger than a 10, a 310. The 310 is going to throw out a 6-in fan with an orifice size of 10. So what is the difference