 In this step, then we're going to take a quick look at what extrusion is in Maya It's mostly an information dump really but feel free to follow along so that you've got a good idea of what it is and how it works So the first thing I'll do just so that it's out of the way is turn off the furniture layer Fine center on my grid and I'm just going to throw a cube down and Then I'm going to duplicate it. I don't need to rename these because they're not staying there Just for example purposes. Okay, so what I'm going to do with these two cubes this one here I'm going to put into face mode select this face here bring it forward and I'm also going to scale it up a little bit Okay, so that's what happens when we bring a face forward and scale it up What if we do the same but this time with an extrusion so I'll set the face and Extrusion the icon here We're going to use for this is like that and then what I'll do is bring it forward and scale it up and Hopefully if I just select them both you can see the difference between these two cubes When I did an extrusion on this one it added in an edge loop So what it's doing is creating extra geometry from that extrusion point And that's what extrusion is all around and you can do some really cool things with it This is how you can create things like curves You can extrude a long curve as well So if you wanted to create like a wire or something without having to do it painstakingly one at a time And there's a lot of really cool shapes to be made through extrusion That is the demo of what extrusion is. Hopefully you've seen the Explanation that I put on screen as well and that will do it for this very short step in the next step We're going to be using extrusion to model our window So I will see you in the next step for that and just get rid of these cubes. We don't need them. See you in the next step Game Dev Academy is graciously supported by these absolute legends If you'd like to offer your support then check out our patreon page using the link in the description below