WEBVTT 1 00:00:00.000 --> 00:00:01.766 Welcome to Extruding 2 00:00:01.766 --> 00:00:05.766 in Blender! In this video we'll go over what extruding 3 00:00:05.766 --> 00:00:09.766 is, how you can go about planning your 4 00:00:09.766 --> 00:00:13.766 model, and how it applies differently to faces, 5 00:00:13.766 --> 00:00:17.766 edges, and vertices. So let's hop over 6 00:00:17.766 --> 00:00:21.766 into a new Blender file! So whenever 7 00:00:21.766 --> 00:00:25.766 we're extruding, we're going to want to be in Edit Mode, 8 00:00:25.766 --> 00:00:29.766 and extruding is taking either an edge, 9 00:00:29.766 --> 00:00:33.766 a face, or a vertex and creating 10 00:00:33.766 --> 00:00:37.766 new geometry from it. So let's start with 11 00:00:37.766 --> 00:00:41.766 a face! Go on to Face Select and select one of the 12 00:00:41.766 --> 00:00:45.766 faces. Now we've already experienced what happens when you 13 00:00:45.766 --> 00:00:49.766 scale it, so we could grab this whole cube and scale it 14 00:00:49.766 --> 00:00:53.766 up or scale it so it's tall in the Z axis. But in this case, 15 00:00:53.766 --> 00:00:57.766 what we can do is go down to Mesh 16 00:00:57.766 --> 00:01:01.766 and go to Extrude, and we've got Region and we can see 17 00:01:01.766 --> 00:01:05.766 it's go the shortcut key E. And when you do that it 18 00:01:05.766 --> 00:01:09.766 creates a new face, joined with some other faces. 19 00:01:09.766 --> 00:01:13.766 I haven't made that exactly a cube, although it's probably not far from it. 20 00:01:13.766 --> 00:01:17.766 And then, if we click this face here, we can press 21 00:01:17.766 --> 00:01:21.766 E or go to Mesh and Extrude, and we can extrude out this 22 00:01:21.766 --> 00:01:25.766 way. See you can very quickly build up a model 23 00:01:25.766 --> 00:01:29.766 of whatever you like, by just extruding. 24 00:01:29.766 --> 00:01:33.766 And there we go, we've got some funky block work going on, perhaps 25 00:01:33.766 --> 00:01:37.766 a 3D Tetris piece. 26 00:01:37.766 --> 00:01:41.766 So how does it effect with edges? So we've seen verts when you extrude 27 00:01:41.766 --> 00:01:45.766 a face, it creates a 3D 28 00:01:45.766 --> 00:01:49.766 object of sorts. Now if we go and select an Edge, 29 00:01:49.766 --> 00:01:53.766 and let's say we want to extrude this edge, you will notice it just generates 30 00:01:53.766 --> 00:01:57.766 a single face. And we can lock it using a 31 00:01:57.766 --> 00:02:01.766 modifier key, like the Y key in this case, 32 00:02:01.766 --> 00:02:05.766 in order to lock it into a certain place. 33 00:02:05.766 --> 00:02:09.766 Then there we go, we've got something that can't exist in real life, because it's 34 00:02:09.766 --> 00:02:13.766 just a single face, it's got no thickness, 35 00:02:13.766 --> 00:02:17.766 but it's great for building up our model, because then we can then 36 00:02:17.766 --> 00:02:21.766 click on this face. So we go to Face Select and click on that 37 00:02:21.766 --> 00:02:25.766 face and then extrude upwards. 38 00:02:25.766 --> 00:02:29.766 You see that it's exactly the same 39 00:02:29.766 --> 00:02:33.766 height as that but in a new position. And we can see by the 40 00:02:33.766 --> 00:02:37.766 strange coloring thats going on that, that has in fact got 41 00:02:37.766 --> 00:02:41.766 its normals around the wrong way, so it definitely can't exist in real life. 42 00:02:41.766 --> 00:02:45.766 So in that case, I can select all of the faces, but in this case, I'm going to select the 43 00:02:45.766 --> 00:02:49.766 entire model. So I'm going to go to Select, Deselect Everything 44 00:02:49.766 --> 00:02:53.766 first, and then, Select, and Select everything, and then just go to Mesh, 45 00:02:53.766 --> 00:02:57.766 Normals, and Recalculate to the Outside or 46 00:02:57.766 --> 00:03:01.766 press Control and N. And that sorted out the normals on that. 47 00:03:01.766 --> 00:03:05.766 How about the vertex? Right, with 48 00:03:05.766 --> 00:03:09.766 vertices and when you're extruding using 49 00:03:09.766 --> 00:03:13.766 the vertices, it's locked to the angle of which you're 50 00:03:13.766 --> 00:03:17.766 currently viewing. Now to make that abundantly 51 00:03:17.766 --> 00:03:21.766 clear, we're currently looking down at this kind of 45 degree angle onto our 52 00:03:21.766 --> 00:03:25.766 model. If I select this vertex here and 53 00:03:25.766 --> 00:03:29.766 press the E key or go to Extrude, Vertices 54 00:03:29.766 --> 00:03:33.766 Only, you see that we've got this 55 00:03:33.766 --> 00:03:37.766 vertex that we can place anywhere we like and it's 56 00:03:37.766 --> 00:03:41.766 going to create an edge. And we can carry on doing that to our 57 00:03:41.766 --> 00:03:45.766 hearts content, here, here, here, and you can make 58 00:03:45.766 --> 00:03:49.766 anything you'd like. And of course, at some point, you'll want to close your 59 00:03:49.766 --> 00:03:53.766 geometry. At the moment, this is all loose even though all 60 00:03:53.766 --> 00:03:57.766 of these are connected to one another, it doesn't make anything other than 61 00:03:57.766 --> 00:04:01.766 a series of edges. So we can create one more 62 00:04:01.766 --> 00:04:05.766 and place it roughly next to our vertex that 63 00:04:05.766 --> 00:04:09.766 we've had before, select the other vertex, and then, 64 00:04:09.766 --> 00:04:13.766 Remove our Doubles. And has that 65 00:04:13.766 --> 00:04:17.766 removed? We can see it's removed no vertices. I'm just going to increase the merge distance, 66 00:04:17.766 --> 00:04:21.766 and that's closed that now. So that's one 67 00:04:21.766 --> 00:04:25.766 vertex there, so it's linked back in. Now, if I 68 00:04:25.766 --> 00:04:29.766 move the model around, you'll see that that whole series of 69 00:04:29.766 --> 00:04:33.766 edges that we've created and vertices exist where I was 70 00:04:33.766 --> 00:04:37.766 looking down on it. So if you wanted more control over that, you'd probably 71 00:04:37.766 --> 00:04:41.766 lock your model in Orthographic Projection 72 00:04:41.766 --> 00:04:45.766 to the side, and then, you could take an edge here, 73 00:04:45.766 --> 00:04:49.766 make a pointy shape, if you wanted to, and I'm going to 74 00:04:49.766 --> 00:04:53.766 join it back down here. I'm going to select the other vertex, 75 00:04:53.766 --> 00:04:57.766 Remove Doubles, and that's brought the two together. 76 00:04:57.766 --> 00:05:01.766 And as you can see, that's actually on 77 00:05:01.766 --> 00:05:05.766 this plane here, the Z, Y plane, 78 00:05:05.766 --> 00:05:09.766 so you can see it's straight down that edge. This 79 00:05:09.766 --> 00:05:13.766 one is a bit ambiguous, it's just being created 80 00:05:13.766 --> 00:05:15.100 in a random 81 00:05:15.100 --> 00:05:17.433 place in space. 82 00:05:18.000 --> 00:05:21.933 So you can see, by using this method, you can 83 00:05:21.933 --> 00:05:25.933 very quickly block out a model shape 84 00:05:25.933 --> 00:05:29.933 that you want. Now I haven't been particularly clear with what I'm doing here. 85 00:05:29.933 --> 00:05:33.933 Oh, how about that! So because the 86 00:05:33.933 --> 00:05:37.933 normals were the wrong way around, when we created... I'm just going to switch back into 87 00:05:37.933 --> 00:05:41.933 Perspective Mode. Because the normals were the wrong way around on the 88 00:05:41.933 --> 00:05:45.933 face that we created here, when we extruded an edge, 89 00:05:45.933 --> 00:05:49.933 you can see it's kind of created a box. Now we'll want to 90 00:05:49.933 --> 00:05:53.933 fill that face in, unless we want the box shape. In this 91 00:05:53.933 --> 00:05:57.933 case we don't, so we'll need to go to Edge Select, select 92 00:05:57.933 --> 00:06:01.933 these edges here, and 93 00:06:01.933 --> 00:06:05.933 finally, we need to fill that in. So we can go to Mesh, 94 00:06:05.933 --> 00:06:09.933 Faces, Make an Edge or Face, and click F. 95 00:06:09.933 --> 00:06:13.933 So there we go, that's now a solid object again! 96 00:06:14.300 --> 00:06:18.300 It's challenge time! OK, I'd like you to create a 97 00:06:18.300 --> 00:06:22.300 block plane, as in an airplane! Now I 98 00:06:22.300 --> 00:06:26.300 would like you, if you're unfamiliar with an airplane, to go look at some planes. 99 00:06:26.300 --> 00:06:30.300 Wooden toys do make a great reference material for this 100 00:06:30.300 --> 00:06:34.300 type of modeling, and, of course, once you've made it share the creation 101 00:06:34.300 --> 00:06:36.100 in the discussions. 102 00:06:36.100 --> 00:06:39.400 So let's hop on over into Blender! Here 103 00:06:39.400 --> 00:06:43.400 we have the basic startup file in front of us, and the 104 00:06:43.400 --> 00:06:47.400 first thing I'm going to do is hop on over into Edit Mode. 105 00:06:47.400 --> 00:06:51.400 Now I'm going to select the front face, 106 00:06:51.400 --> 00:06:55.400 and I'm going to use these arrows as reference. 107 00:06:55.400 --> 00:06:59.400 So I want the front of the plane, 108 00:06:59.400 --> 00:07:03.400 where this green arrow is here, and the rear on 109 00:07:03.400 --> 00:07:07.400 the other side. So I've pressed E to extrude 110 00:07:07.400 --> 00:07:11.400 and that's going to be the nose of my plane. 111 00:07:11.400 --> 00:07:15.400 Now, each time I extrude, I'm going to want to 112 00:07:15.400 --> 00:07:19.400 think about what is going in that area. So those are roughly 113 00:07:19.400 --> 00:07:23.400 the middle of the fuselage and wings, then we're going to have a bit of body, 114 00:07:23.400 --> 00:07:27.400 and then, we're going to have the tail plane and 115 00:07:27.400 --> 00:07:31.400 the fin things at the back. OK, so let's start 116 00:07:31.400 --> 00:07:35.400 shaping our model! We'll worry about the wings and things like that 117 00:07:35.400 --> 00:07:39.400 in a moment. We want this to be a pointy cone, so I'm going to select the front 118 00:07:39.400 --> 00:07:41.366 end. 119 00:07:41.366 --> 00:07:43.433 I want to scale that down to 120 00:07:43.433 --> 00:07:47.433 nothing. So I pressed S and I could keep going until I'm roughly there, or I could just 121 00:07:47.433 --> 00:07:51.433 hit the 0 key, which will scale it to a point. 122 00:07:51.433 --> 00:07:55.433 OK these two here, I want to 123 00:07:55.433 --> 00:07:59.433 raise up to make the cockpit. So I'm going to click on that one 124 00:07:59.433 --> 00:08:03.433 and this one here, and I'm going to extrude 125 00:08:03.433 --> 00:08:07.433 up, I don't know by how much. That should do! 126 00:08:07.433 --> 00:08:11.433 Finally, these last two we'll make the tail plane 127 00:08:11.433 --> 00:08:15.433 from, or rather this one here. So we'll extrude that 128 00:08:15.433 --> 00:08:19.433 up as well to roughly there, so it's eye level, 129 00:08:19.433 --> 00:08:23.433 and then, we're going to have a wing here and 130 00:08:23.433 --> 00:08:27.433 a wing on the other side. Now there is a way of 131 00:08:27.433 --> 00:08:29.600 mirroring, but we're not going to do that, at the moment, we're just going to extrude 132 00:08:30.133 --> 00:08:34.133 that out. So we're going to hit the E key to extrude 133 00:08:34.133 --> 00:08:38.133 and I've started moving it in that direction, and looking down in the 134 00:08:38.133 --> 00:08:42.133 lower corner, I think 5 and 1/2 to 6 is going to be what we want. 135 00:08:42.133 --> 00:08:46.133 I'm going to go for 5, so I'm just going to press the number 5, and I'm going to go 136 00:08:46.133 --> 00:08:50.133 around to the other side, select that face, press E, move this way, 137 00:08:50.133 --> 00:08:54.133 and again by 5. 138 00:08:54.133 --> 00:08:58.133 And there we go! This one here is going to be much less, so let's extrude that 139 00:08:58.133 --> 00:09:02.133 out, probably about there, which is about 2. 140 00:09:02.133 --> 00:09:06.133 And the same here, extrude this way by 2. 141 00:09:06.133 --> 00:09:10.133 Now you can use the numbers across the top of the keyboard. I'm 142 00:09:10.133 --> 00:09:14.133 just using my number pad, since it's easier to reach. 143 00:09:14.133 --> 00:09:18.133 So now we need to tidy this lot up. So we're 144 00:09:18.133 --> 00:09:22.133 going to bring some of these together. So I'm going to bring this 145 00:09:22.133 --> 00:09:26.133 edge along with this edge, straight away. 146 00:09:26.133 --> 00:09:30.133 So I'm just going to move it back, until they're almost 147 00:09:30.133 --> 00:09:34.133 on top of one another, and then, I'm going to select the other edge, 148 00:09:34.133 --> 00:09:38.133 go down, and Remove Doubles. And I'm 149 00:09:38.133 --> 00:09:42.133 going to increase the Merge Distance enough, so that they snap together. 150 00:09:42.133 --> 00:09:46.133 And I see at the top here, we've removed 2 vertices. 151 00:09:46.133 --> 00:09:50.133 And I'm going to do the same now for this edge and this edge. 152 00:09:50.133 --> 00:09:54.133 So I'm going to move that in till it's almost over the top, 153 00:09:54.133 --> 00:09:58.133 select the other one, and remove doubles. 154 00:09:58.133 --> 00:10:02.133 Now, I'm going to want to do a similar thing 155 00:10:02.133 --> 00:10:06.133 to this wing, so I'm going to do that now. 156 00:10:06.133 --> 00:10:10.133 Oh, there's another way you could do that! So we could merge these two together, or 157 00:10:10.133 --> 00:10:14.133 once again, you could select the face here 158 00:10:14.133 --> 00:10:18.133 and then scale it, but this time constrain it so it's 159 00:10:18.133 --> 00:10:22.133 only on the Z axis. So I'm going to hit the Z key 160 00:10:22.133 --> 00:10:26.133 and you can see it's getting smaller and bigger that way, and I'm going to 161 00:10:26.133 --> 00:10:28.933 constrain it down to 0. 162 00:10:28.933 --> 00:10:32.933 But bear in mind that these two edges, that have now been 163 00:10:32.933 --> 00:10:36.933 scaled together, still exist on top of one another. So if you were 164 00:10:36.933 --> 00:10:40.933 to do any work on it, let's select that edge now, 165 00:10:40.933 --> 00:10:44.933 we can still see that we can lift it up or indeed through one another, so they're not 166 00:10:44.933 --> 00:10:48.933 merged yet. So let's just undo that! 167 00:10:48.933 --> 00:10:52.933 So to merge those two again, because they were on top of one another, we'll need to hop into 168 00:10:52.933 --> 00:10:56.933 Wireframe Mode, select the other edge as well, scroll down 169 00:10:56.933 --> 00:11:00.933 here, Remove Doubles. And we can see we've removed 2 vertices 170 00:11:00.933 --> 00:11:04.933 which make up the edge there, so we've only got 2 left. I'd 171 00:11:04.933 --> 00:11:08.933 recommend, when you've finished your model, just selecting 172 00:11:08.933 --> 00:11:12.933 everything, and then, anything that's right next to one another, 173 00:11:12.933 --> 00:11:16.933 if we click Remove Doubles, the Merge Distance is low. We can already see we've 174 00:11:16.933 --> 00:11:20.933 created a duplicate 8 vertices there. 175 00:11:20.933 --> 00:11:24.933 So it's always a good tip, as you're going through, if you think you've put one thing on top 176 00:11:24.933 --> 00:11:28.933 of another, and you do want them to merge into one, then 177 00:11:28.933 --> 00:11:32.333 remember to Remove Doubles, either as you go or towards the end. 178 00:11:33.000 --> 00:11:34.800 So I'm just going to 179 00:11:34.800 --> 00:11:38.800 rotate around the model now, to the other side of the plane, 180 00:11:38.833 --> 00:11:42.700 and I'm going to do the same on this one. So I'm going to scale, 181 00:11:42.700 --> 00:11:45.266 which you can select up here of course, 182 00:11:45.566 --> 00:11:48.800 on the Z axis down to 0. 183 00:11:48.800 --> 00:11:52.800 Now I can do the same thing for here and here. 184 00:11:52.800 --> 00:11:56.800 We can select them all at once, if we were astute enough to remember 185 00:11:56.800 --> 00:12:00.800 what we were doing. Again, scale in the 186 00:12:00.800 --> 00:12:04.800 Z axis, down to 0. 187 00:12:04.800 --> 00:12:08.800 Here we're going to scale in the Y axis, by the looks of things, 188 00:12:08.800 --> 00:12:12.800 or maybe the X, X axis down to 0. So scale 189 00:12:12.800 --> 00:12:16.800 in the X axis, all the way down to 0. 190 00:12:16.800 --> 00:12:20.800 I'm not sure whether 191 00:12:20.800 --> 00:12:24.800 we can select this edge and scale it down to 0 as well, that would be very 192 00:12:24.800 --> 00:12:28.800 quick and simple if we could. Perfect! 193 00:12:28.800 --> 00:12:32.800 So there we have our rudimentary plane! Now you can go around and 194 00:12:32.800 --> 00:12:36.800 tidy some of this up, but that's pretty much the work 195 00:12:36.800 --> 00:12:40.133 flow for doing block modeling. 196 00:12:40.133 --> 00:12:44.033 How did you guys get on? What did you come up with? You can 197 00:12:44.033 --> 00:12:48.033 spend a lot more time adding a lot of detail to this model! I'd love to see 198 00:12:48.033 --> 00:12:52.033 what you came up with! See you in the next lecture!