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Architecture, design, and media professionals all over the world are using Google SketchUp to create detailed 3D models efficiently and quickly. In Google SketchUp 6 Essential Training, design expert George Maestri teaches the foundations of SketchUp's drawing, design, and rendering tools. He covers the fundamentals of the application, the interface, and the Sandbox extension, which is used to create realistic organic shapes and terrain. George also discusses how to model and texture objects from existing photographs and export models to Google Earth to visualize how buildings fit in a real landscape. Exercise files accompany the course.
The next tool we are going to discuss is the Push/Pull tool. This is probably one of the more handy tools you'll find in SketchUp. And what it does is it takes a flat 2D face, and essentially extrudes it into a 3D shape. So if you are familiar with other 3D applications, it would be very similar to an Extrude function. So let me show you how it works. You can find the tool under Tools, and it's here, Push/Pull. And the hot key is P, for Push/Pull. You can also find it here; this is the icon on the toolbar.
Now, in order for the Push/Pull tool to work we need a face or we need some flat geometry to work with. So I am going to start now with a rectangle and let's play with it. So now I select the Push/Pull tool and basically, all you do is left-click on a face and drag, that's all you have to do. Now, once you've dragged this out, it creates a 3D object, essentially, it extrudes that face into a 3D object. Now if I take the Push/Pull tool and put it on any one of thee faces, what it does is pushes and pulls those faces but doesn't add additional geometry, it's essentially a sizing tool. Now if we want, you can hold down the Ctrl key, and the little Plus sign appears, and now what we can do is we can actually add geometry.
So what we've done here is created a circle of edge loops around here. Now, that I have this additional geometry, I can just pull this out, and it acts more as an Extrude tool rather than a sizing tool. So when there is an open face like this, you are sizing. But when there is a face that has a border on it, you are extruding. For example, I can extrude here and create some additional detail down here. Now, there are some rules with the Push /Pull tool. One of the most important rules involves Curved Faces. So, let me show you a little bit about that. I am going to take a circle, and I am going to draw it on one of these faces. Now I can use the Push/Pull tool to extrude this out or in so I can actually make holes in things. So I can extrude faces that have curved edges. The limitation with the Push/Pull tool is that it won't extrude curved faces. Let me show you what I mean. So I am going to draw a line from here to here, and from here to here, basically to break up the surface. Now I am going to take the Push/Pull tool, and basically push that down so I can see this open curved face.
If you notice, if I put my tool over this flat face, I can Push/Pull that, I can Push/Pull this but I can't Push/ Pull this curved face, and it says, Cannot Push/Pull a curved face. And that seems pretty normal, because really it doesn't know what direction is going to Push/Pull it, because it is a curved surface so there is a really no set up and down or left and right direction. It's kind of facing in multiple directions, so that's the one limitation of this tool. Now, we can't get around this a little bit by using some other little tricks that we have with polygons. So I am going to actually make a new file here, No, I don't want to save that. And I am going to do two things, I am going to make a circle. Remember, when we make a circle, we can actually type in the number of sides. So let's say, I have 24 sides here, let's make it a little bit smaller and say that we have 16 sides to the circle, so I can draw this circle, and if you notice, if you can see it actually does have 16 sides. I can do the same with a polygon. Let's go ahead and make a polygon with 16 sides, and go ahead and make that.
In some ways these actually look alike, they look like sixteen sided polygons. But when we Push/Pull them, you'll see the difference between why we have circles, and why we have polygons. When we extrude the circle or Push/Pull the circle, you'll notice that it Push/ Pulls in a very smooth surface, so there is really no edges there. If I do the same to the polygon, what you have is you have a multi-sided surface, so really it's not smoothed. But this faces are flat, so that means I can Push and Pull this individual faces.
So if you want to do some extrusions on a circle you might want to instead build it as a polygon, and that will give you some additional abilities. Now, let me show you how to use the Push/ Pull tool in more of a real life situation. Let's go ahead and open a file, and you can see here that we have a basic floor plan for the house. Now I smooth the edges here using circles, but this front edge here, I used a polygon. So you'll notice when I extrude it you'll see that it's a polygon. So when I use the Push/ Pull tool to extrude this, one of the things I can't do is I can't just like with most of the other tools is I can't type in a specific height that we are pushing and pulling, and I want this to be a 12 foot height building. So just type 12 feet and hit Enter, and there it goes.
Now if you notice this edges here, are curved, so we can't Push/Pull this. But this front one here, is actually polygons and we can, but we'll be using that a little bit later. If I want to, I can make a second floor for this, but I need to go to my Line tool, and I am going to go ahead and snap something that's parallel to the red axis and just cut it right there and then do another one here for the green axis and cut it there. Hit my Spacebar key for Push/Pull, and I am going to extrude the second floor. And again, that's going to be 12 feet, so I am going to type in 12 feet, hit Enter, and there we go.
Now, I have got some additional detail here, so I can take this edge here and just delete that so that I've got a smooth face here. Let's go ahead and make the garage. I am going to take a rectangle, and I am just going to go ahead and sketch out that garage. I am just going to Eye Ball it, I can probably, do specific dimensions if I wanted to but I don't need to. And then select that face, P for Push/Pull, and then I am just going to push that in just little bit to give it a hint that there is a garage door there. Now, also what I had in the original one, is I had a staircase. So what I want to do is create a landing. Again, I am going to do that with a Rectangle tool.
So I am going to select my Rectangle; snap it here to this corner and then I could dimension this if I wanted to, but I think I am just going to Eye Ball it. So I am just going to make my porch or my landing this high, and then I am going to select that face and then I am going to Push/Pull that out. Now if I want to, I could give it a specific height, and let's go ahead and make it six feet wide, that's the width of my stairs. But I still need to make the stairs. So what I can do is use the Line tool. And if I wanted to do four stairs, it's very easy to cut each of these in half. I just snap to midpoint here, and then snap to midpoint here, and I know I have cut this in half. So now, I have the bases for two steps.
If I snap the midpoint here, and here, then I have got three, four steps. Now all I have to do is just Push/Pull this out. How deep do I want these steps to be, let's say, I want them 12 inches, so I will Push/Pull this one 36, Push/Pull this one 24, Push/Pull this one 12, there we go. Now there are some steps. Now if I want them a little bit longer, if I want them like a little bit shallower in terms of my steps, so I can actually make this another 36, make this another 24 inches, make this another 12 inches. So basically, these are two feet long and however high they are. So there are the basics of my steps.
So that's essentially how you can use the Push/Pull tool to get the basics of this our deco house, and we are going to save this out, and we are going to play with it little bit more as we go through some additional tools. Go ahead and play with the Push/Pull tool and build some stuff, and we are going to move on to some additional tools.
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