This video is going to give you some more information on how to use sketch-based tools in your design. And the sketch-based tools, which might be a little bit surprising at first, are actually located, in this create drop down. And this is them here. These six tools here. And the reason they're called sketch-based tools, is that first, you have to create a sketch, a 2-D sketch of some sort of design, that you will then use, the sketch based tools, to create three features out of it. And so you've probably seen extrude already. So, I'm going to do is start with revolve and then we'll do a sweep and a loft. So, starting with the revolve, you can see that I've got a sketch here already. I created this. And if I jump in to create drop down and choose revolve. First thing it asked me to choose is a profile. And so in this sketch, I created this profile and I created it, specifically so that this axis, so that it was centered around this axis right here. So, if I choose axis next after profile and then this axis, it will now rotate that profile all the way around that axis. And, you can make it less, it doesn't have to be all the way. So I could say, 270 degrees. And if I choose negative it will go in the opposite direction. So you choose OK and this is now a bio that we've created. And the next thing we're going to do is loft. So I'm going to control Z, to undo that revolve, so that we can make some space for our loft. And, I actually have more sketches that I've created for this demonstration, so I'm just going to make them visible now. That's a circle on another plan and this is actually just a point that I made on a 3rd construction plane. So, we're all ready to use the loft. I choose Loft and from this point, we've got, profiles that we're selecting. So, it's asking me, which of these profiles do I want to include in my loft. I'm actually going to include all of them and I'm going to make this square, my first profile and then the next thing I want to do is add this profile. And when I do that it's on a different plane. So now it's beginning to start our loft operation. And lastly, you don't have to click plus but sometimes I do, just to keep things straight. If I clicked this point, we've now got a 3 plane loft coming together with all those profiles, those two profiles on that one point. And if I choose OK. You can see how the loft tool, will actually meld those shapes and it will, sort of map them to each other so that it comes out really smoothly. But one thing I just want to warn you guys about is that, if you do have something come to a point like this that can cause some problems for operations down the line, such as like shell. So, it's really quick I want to show you that if I right click and edit that loft, in the history bar down there, that this last profile that I chose has an arrow here and if I expand it I can change it from a sharp tip to a point tangent. And because it was a work point that I use, it gives me this option and this gives me the ability to change the tangency at the end there. Basically, how sharp it is. So this is something you just might have to tweak, if you find that your loft is giving you some error messages and it also allows you to add a little bit more design, into what you're creating. So there's our loft, I'm going to control Z again and we'll pull up our sketches for the sweep. And for, that we're just going to use, these. So again, I've got this profile here. But now in a plane perpendicular to that one, I've created, a spline. That sort of comes out looks like it comes on three space a little bit. Now, again, come up to create and choose sweep. And again, the first thing it asked is a profile. And again this is sketch based operations, so you're usually going to be referring to a profile within a sketch, almost always. So, I choose that profile and next asking for a path. And what sweep does is, it takes a profile, I'm going to choose this path. And it will pass that profile all the way along the path and the way I've got it set now, is that- that profile will be perpendicular to the path at every point. So it sort of turns and curves as it goes. So I'm going to click OK. But another thing I want to point out for this operation is that see here, it's kind of wrinkled over itself and that's not really ideal. It means that you've got overlapping material, so to speak. So, I'm going to, right click and edit this feature again, or actually, let me not do that. What you really would want to do, is that you know that this sweep is really not going to work. And it's not because of sweep it's because of your sketch. So, I'm going to come in to this last sketch I did. I'm just going to change the path a little bit. So that's less curved. I could also have gone into the profile and changed that so that it's smaller. So it wouldn't self-intersect quite as easily. This should begin. So if I stop the sketch, our sweep will live update, as I change that, the profile of it. And now, it's nice, and smooth, and doesn't have any overlapping. So that's just a little bit more information on how you can use these sketch based tools, after having created sketches to create some 3D geometry.