WEBVTT

1
00:00:00.080 --> 00:00:03.000
<v Speaker 1>Okay, let's kick things off. We have a really interesting

2
00:00:03.040 --> 00:00:05.879
<v Speaker 1>source for our deep dive today. It's the book three

3
00:00:05.960 --> 00:00:10.160
<v Speaker 1>D Printing Blueprints by Joe Larsen, and our mission really

4
00:00:10.240 --> 00:00:13.359
<v Speaker 1>is to get into the heart of well designing stuff

5
00:00:13.400 --> 00:00:16.359
<v Speaker 1>for this pretty exciting world of home three D printing.

6
00:00:16.519 --> 00:00:17.480
<v Speaker 2>It is exciting, you.

7
00:00:17.399 --> 00:00:19.679
<v Speaker 1>Know, having a three D printer just sitting there. It's

8
00:00:19.719 --> 00:00:23.160
<v Speaker 1>cool definitely. But the real magic, I think, the thing

9
00:00:23.160 --> 00:00:27.800
<v Speaker 1>that plugs you into that whole New Industrial Age idea

10
00:00:27.879 --> 00:00:32.119
<v Speaker 1>the book mentions, is designing the objects yourself, taking your

11
00:00:32.159 --> 00:00:34.840
<v Speaker 1>own ideas, you know, maybe just sketches or concepts, and

12
00:00:34.880 --> 00:00:37.039
<v Speaker 1>actually making them real physical things.

13
00:00:37.119 --> 00:00:39.719
<v Speaker 2>Yeah, turning bits into atoms basically exactly.

14
00:00:39.799 --> 00:00:42.479
<v Speaker 1>And the really great starting point of this book, which

15
00:00:42.520 --> 00:00:45.759
<v Speaker 1>is key for you listening, is that it argues you

16
00:00:45.799 --> 00:00:48.640
<v Speaker 1>don't need to be some kind of amazing artist or

17
00:00:48.679 --> 00:00:52.320
<v Speaker 1>a CAD expert to start. If you can handle spatial

18
00:00:52.359 --> 00:00:55.320
<v Speaker 1>puzzles like Tetris maybe, or even just you know, play

19
00:00:55.359 --> 00:00:58.640
<v Speaker 1>pictionary and visualized shapes, or if you messed around with

20
00:00:58.679 --> 00:01:01.600
<v Speaker 1>modeling clay, yeah, you kind of have the basics. Just

21
00:01:01.640 --> 00:01:04.719
<v Speaker 1>need a computer really and some creativity and.

22
00:01:04.680 --> 00:01:10.280
<v Speaker 2>The shift you mentioned bringing fabrication from goog factories down

23
00:01:10.280 --> 00:01:13.879
<v Speaker 2>to the desktop scale. It's genuinely transformative. It really is

24
00:01:13.920 --> 00:01:17.640
<v Speaker 2>a new kind of accessibility for manufacturing. Yeah, but you

25
00:01:17.719 --> 00:01:20.840
<v Speaker 2>hit the nail on the head. The possibilities feel endless.

26
00:01:21.280 --> 00:01:24.040
<v Speaker 2>But these home printers, especially the FtM type of the

27
00:01:24.040 --> 00:01:28.239
<v Speaker 2>book mostly talks about they build layer by layer, and

28
00:01:28.280 --> 00:01:32.079
<v Speaker 2>that process has real physical limits. You can't just dream

29
00:01:32.200 --> 00:01:35.680
<v Speaker 2>up anything and expect it to print perfectly. Careful design

30
00:01:35.799 --> 00:01:37.239
<v Speaker 2>is just well essential.

31
00:01:37.439 --> 00:01:38.959
<v Speaker 1>So what tools are we talking about?

32
00:01:39.159 --> 00:01:42.280
<v Speaker 2>Well, the book focus is mainly on Blender, which is

33
00:01:42.319 --> 00:01:45.959
<v Speaker 2>a great choice. Honestly, it's powerful, it's free, open source,

34
00:01:46.000 --> 00:01:49.560
<v Speaker 2>it runs everywhere right, runs everyone, Windows, Mac, Linux now.

35
00:01:49.599 --> 00:01:52.280
<v Speaker 2>Blenders for the modeling part, but the source also points

36
00:01:52.280 --> 00:01:56.359
<v Speaker 2>out you need other bits like slicer software. The slicer Yeah,

37
00:01:56.400 --> 00:01:59.439
<v Speaker 2>things like kiraprusa slicer, maybe even the older replicator g

38
00:01:59.599 --> 00:02:02.439
<v Speaker 2>forker box. That software turns your three D model into

39
00:02:02.480 --> 00:02:05.560
<v Speaker 2>actual instructions. The printer understands line by line, layer by layer.

40
00:02:05.599 --> 00:02:05.959
<v Speaker 1>Got it?

41
00:02:06.079 --> 00:02:08.240
<v Speaker 2>And of course, so it's like thingaverse get mentioned too.

42
00:02:08.919 --> 00:02:12.240
<v Speaker 2>Super useful for finding models, sure, but eventually for sharing

43
00:02:12.280 --> 00:02:13.400
<v Speaker 2>your own designs once.

44
00:02:13.159 --> 00:02:16.159
<v Speaker 1>You get going, and the book's approach to teaching this.

45
00:02:16.560 --> 00:02:18.560
<v Speaker 1>It sounds very practical.

46
00:02:18.360 --> 00:02:22.520
<v Speaker 2>Very it uses these blueprints right guided projects. Essentially, you

47
00:02:22.560 --> 00:02:25.719
<v Speaker 2>start with something simple and each project introduces a few

48
00:02:25.759 --> 00:02:27.120
<v Speaker 2>new Blender tools or.

49
00:02:27.039 --> 00:02:29.439
<v Speaker 1>Techniques, so you build skills gradually.

50
00:02:29.719 --> 00:02:33.159
<v Speaker 2>Exactly. It's not just theory. It's focused on learning by doing,

51
00:02:33.840 --> 00:02:37.840
<v Speaker 2>building up that muscle memory for how the tools work,

52
00:02:37.879 --> 00:02:40.120
<v Speaker 2>how to think about shapes in three D space.

53
00:02:40.479 --> 00:02:43.240
<v Speaker 1>Okay, so doing, not just reading precisely.

54
00:02:43.280 --> 00:02:46.879
<v Speaker 2>And the very first hurdle it tackles head on are

55
00:02:46.919 --> 00:02:49.879
<v Speaker 2>those basic design rules, the ones dictated by the physics

56
00:02:49.879 --> 00:02:53.080
<v Speaker 2>of laying down melted plastic. And the absolute number one

57
00:02:53.159 --> 00:02:56.919
<v Speaker 2>enemy it's well unsupported plastic trying to print out into thin.

58
00:02:56.800 --> 00:02:59.879
<v Speaker 1>Air, right, the infamous spitting monster.

59
00:03:00.000 --> 00:03:02.879
<v Speaker 2>Getting monster or the bird's nest. Yeah, if there's nothing

60
00:03:02.919 --> 00:03:04.960
<v Speaker 2>holding up a section of plastic as it cools, it

61
00:03:05.120 --> 00:03:08.879
<v Speaker 2>just droops or strings everywhere, total failure. So supports then,

62
00:03:09.080 --> 00:03:12.960
<v Speaker 2>so supports. Yes, you can print temporary structures. Some of

63
00:03:13.000 --> 00:03:15.680
<v Speaker 2>you just break away. Others might dissolve in water or something,

64
00:03:16.120 --> 00:03:18.520
<v Speaker 2>but you know, they leave little mark. Sometimes they use

65
00:03:18.560 --> 00:03:21.240
<v Speaker 2>up filament, which is waste, and removing them can be

66
00:03:21.280 --> 00:03:22.400
<v Speaker 2>a bit messier fiddly.

67
00:03:22.680 --> 00:03:23.919
<v Speaker 1>Okay, So ideally.

68
00:03:24.080 --> 00:03:26.919
<v Speaker 2>Ideally, and this is what good design really pushes for.

69
00:03:27.479 --> 00:03:29.960
<v Speaker 2>You try to design your model so it doesn't need supports,

70
00:03:30.560 --> 00:03:31.840
<v Speaker 2>or at least minimizes them.

71
00:03:31.879 --> 00:03:34.360
<v Speaker 1>Ah, So design around the limitation.

72
00:03:34.120 --> 00:03:37.599
<v Speaker 2>Exactly, which brings us to some key ideas for supportless printing.

73
00:03:38.520 --> 00:03:43.360
<v Speaker 2>Angles are huge angles, Yeah, outward slopes or overhangs. They

74
00:03:43.400 --> 00:03:46.080
<v Speaker 2>need to be gradual. The rule of thumb is usually

75
00:03:46.199 --> 00:03:48.439
<v Speaker 2>keep it at forty five degrees or less from the vertical.

76
00:03:48.680 --> 00:03:49.680
<v Speaker 2>That's generally safe.

77
00:03:49.719 --> 00:03:50.960
<v Speaker 1>Okay, forty five degrees.

78
00:03:51.439 --> 00:03:54.599
<v Speaker 2>Think simple shapes. A capital H print's fine, right, each

79
00:03:54.639 --> 00:03:55.800
<v Speaker 2>lighter rests on the one below.

80
00:03:55.840 --> 00:03:56.520
<v Speaker 1>It makes sense.

81
00:03:56.759 --> 00:04:00.360
<v Speaker 2>But a capital T that horizontal top bars picking out

82
00:04:00.360 --> 00:04:03.800
<v Speaker 2>with nothing underneath that needs support or you need to

83
00:04:03.840 --> 00:04:07.080
<v Speaker 2>redesign it somehow, maybe at a champer or curve underneath.

84
00:04:07.199 --> 00:04:08.919
<v Speaker 1>So sharp overhangs are bad.

85
00:04:09.080 --> 00:04:14.039
<v Speaker 2>Very tricky without supports. Now, some fancier printers have dual extruders,

86
00:04:14.120 --> 00:04:16.759
<v Speaker 2>you know, maybe for printing supports in a different material

87
00:04:16.879 --> 00:04:20.319
<v Speaker 2>or doing multiple colors, right, but the book really focuses

88
00:04:20.360 --> 00:04:23.439
<v Speaker 2>on single extruder designs. That's what most people have at home.

89
00:04:23.560 --> 00:04:27.240
<v Speaker 1>Okay, what about printing across gaps like the bar in.

90
00:04:27.199 --> 00:04:30.160
<v Speaker 2>The h ah, Yes, bridging, that's what that's called. Where

91
00:04:30.160 --> 00:04:34.199
<v Speaker 2>the printer stretches a line of plastic between two supported points.

92
00:04:34.439 --> 00:04:35.759
<v Speaker 1>Can printers actually do that?

93
00:04:35.839 --> 00:04:38.560
<v Speaker 2>They can? Yeah, yeah, but it depends heavily on the printer,

94
00:04:38.879 --> 00:04:42.199
<v Speaker 2>the material, The setting's cooling is really important. Your printer

95
00:04:42.279 --> 00:04:45.560
<v Speaker 2>needs to be well calibrated. The key is keeping bridges

96
00:04:45.839 --> 00:04:49.199
<v Speaker 2>relatively short and simple, like that bar in the h

97
00:04:49.720 --> 00:04:53.920
<v Speaker 2>long Complex bridges are much more likely to fail or sag.

98
00:04:54.279 --> 00:04:58.399
<v Speaker 1>Okay, got it, So supports angles bridging. These are the

99
00:04:58.399 --> 00:05:01.040
<v Speaker 1>fundamental physity that you're designed against.

100
00:05:00.879 --> 00:05:04.439
<v Speaker 2>Or maybe designing with exactly. You have to respect the process,

101
00:05:04.480 --> 00:05:04.879
<v Speaker 2>all right.

102
00:05:05.199 --> 00:05:08.560
<v Speaker 1>So for this deep dive drawing from Joe Larsen's Blueprints approach,

103
00:05:08.879 --> 00:05:12.959
<v Speaker 1>our mission seems pretty clear. First understand these basic design principles,

104
00:05:13.000 --> 00:05:13.680
<v Speaker 1>the why.

105
00:05:13.560 --> 00:05:16.920
<v Speaker 2>Behind them yep, the physics of printing, and then walk.

106
00:05:16.759 --> 00:05:19.199
<v Speaker 1>Through how the book uses its projects to teach the

107
00:05:19.240 --> 00:05:23.120
<v Speaker 1>actual how, the different modeling techniques, the blender tools you

108
00:05:23.240 --> 00:05:26.639
<v Speaker 1>use for different kinds of objects solving different design problems.

109
00:05:26.759 --> 00:05:29.480
<v Speaker 2>Sounds like a plan seeing how you go from a

110
00:05:29.519 --> 00:05:31.800
<v Speaker 2>simple idea to a printable file.

111
00:05:32.000 --> 00:05:35.279
<v Speaker 1>Okay, then let's dive into those blueprints and follow that

112
00:05:35.399 --> 00:05:38.879
<v Speaker 1>design journey. Where does it start? Typically, Well, like.

113
00:05:38.839 --> 00:05:42.360
<v Speaker 2>We said, it emphasizes learning by doing, So those initial

114
00:05:42.360 --> 00:05:45.800
<v Speaker 2>blueprints are all about just getting your feet wet and blender.

115
00:05:46.399 --> 00:05:48.800
<v Speaker 2>Basic navigation and manipulation.

116
00:05:48.399 --> 00:05:50.079
<v Speaker 1>Like moving around the three D space.

117
00:05:49.959 --> 00:05:53.959
<v Speaker 2>Exactly, adding primitive shapes, cubes, cylinders, fheares, you know, the

118
00:05:53.959 --> 00:05:57.839
<v Speaker 2>building blocks. Then learning to orbit, the view pan, zoom

119
00:05:57.879 --> 00:06:00.279
<v Speaker 2>in and out, absolutely fundamentally.

120
00:06:00.000 --> 00:06:01.480
<v Speaker 1>Selecting thing and selecting things.

121
00:06:01.519 --> 00:06:04.240
<v Speaker 2>Yeah, using simple tools like the box select or the

122
00:06:04.319 --> 00:06:07.279
<v Speaker 2>circle select to just choose which object, or later which

123
00:06:07.639 --> 00:06:09.399
<v Speaker 2>part of an object you want to actually work on.

124
00:06:09.680 --> 00:06:12.240
<v Speaker 2>It's the groundwork before you start really changing shapes.

125
00:06:12.399 --> 00:06:15.680
<v Speaker 1>Okay, basics first, Then you need to actually do something

126
00:06:15.720 --> 00:06:17.600
<v Speaker 1>with those shapes once you select them.

127
00:06:17.959 --> 00:06:21.360
<v Speaker 2>Right, So, the book quickly moves into the basic transformations

128
00:06:21.360 --> 00:06:24.000
<v Speaker 2>we mentioned them, grab, rotate, scale.

129
00:06:23.800 --> 00:06:25.759
<v Speaker 1>Moving, turning, resizing.

130
00:06:26.519 --> 00:06:29.160
<v Speaker 2>These become like breathing as you start blocking out the

131
00:06:29.240 --> 00:06:32.199
<v Speaker 2>main forms of whatever you're designing. But pretty soon just

132
00:06:32.519 --> 00:06:36.560
<v Speaker 2>moving whole objects around isn't enough. You need to change

133
00:06:36.600 --> 00:06:40.120
<v Speaker 2>the object's actual geometry. Get inside the shape, get inside

134
00:06:40.120 --> 00:06:43.079
<v Speaker 2>the shape. That's where edit mode comes in and tools

135
00:06:43.120 --> 00:06:47.319
<v Speaker 2>like extrude are introduced. Early, super powerful extrude. Yeah, you

136
00:06:47.360 --> 00:06:50.560
<v Speaker 2>select a face like the side of a cube, and

137
00:06:50.600 --> 00:06:54.079
<v Speaker 2>you pull it outwards. It creates new geometry connected to

138
00:06:54.120 --> 00:06:56.600
<v Speaker 2>the old. Yeah, like pulling the handle shape right out

139
00:06:56.639 --> 00:06:58.519
<v Speaker 2>of the side of the mini mug project in the book.

140
00:06:58.600 --> 00:07:02.560
<v Speaker 1>Ah okay, so adding material conceptually.

141
00:07:02.120 --> 00:07:06.079
<v Speaker 2>Kind of or extending existing geometry. Loop cut is another

142
00:07:06.199 --> 00:07:08.680
<v Speaker 2>vital one shown early. It lets you slice new edge

143
00:07:08.680 --> 00:07:09.680
<v Speaker 2>loops around your model.

144
00:07:09.720 --> 00:07:10.560
<v Speaker 1>Why would you do that?

145
00:07:10.759 --> 00:07:13.040
<v Speaker 2>It gives you more vertices, more edges, more faces to

146
00:07:13.079 --> 00:07:15.800
<v Speaker 2>work with, more control points for refining the shape or

147
00:07:15.800 --> 00:07:18.199
<v Speaker 2>maybe setting up edges that you plan to extrude later.

148
00:07:18.560 --> 00:07:20.759
<v Speaker 2>More detail basically right right.

149
00:07:20.800 --> 00:07:23.240
<v Speaker 1>It sounds like you're building up the detail bit by bit,

150
00:07:23.279 --> 00:07:24.759
<v Speaker 1>almost like the printer itself does.

151
00:07:25.000 --> 00:07:27.560
<v Speaker 2>That's a great analogy actually, And as you get more

152
00:07:27.600 --> 00:07:32.199
<v Speaker 2>comfortable with those fundamental edits, the book starts introducing modifiers.

153
00:07:32.240 --> 00:07:34.360
<v Speaker 1>Modifiers sounds powerful.

154
00:07:34.480 --> 00:07:38.319
<v Speaker 2>They are. They're like automated ocerations you apply to your object,

155
00:07:38.639 --> 00:07:41.800
<v Speaker 2>but they're non destructive, usually meaning you can tweet them

156
00:07:41.879 --> 00:07:42.720
<v Speaker 2>or turn them off later.

157
00:07:42.879 --> 00:07:44.000
<v Speaker 1>Okay. Examples.

158
00:07:44.040 --> 00:07:46.519
<v Speaker 2>The boolean modifier is a real workhorse. It gets used

159
00:07:46.560 --> 00:07:50.000
<v Speaker 2>a lot. Think of it like virtual cutting or welding.

160
00:07:50.120 --> 00:07:51.199
<v Speaker 1>Cutting and welding.

161
00:07:51.319 --> 00:07:53.839
<v Speaker 2>Yeah, you can use one object shape to cut a

162
00:07:53.839 --> 00:07:56.600
<v Speaker 2>hole right through another one, or you can fuse two

163
00:07:56.639 --> 00:07:59.560
<v Speaker 2>separate objects together into one single seamless mesh.

164
00:07:59.800 --> 00:08:01.639
<v Speaker 1>Oh oh wow, Okay, I can see how that would

165
00:08:01.639 --> 00:08:02.120
<v Speaker 1>be useful.

166
00:08:02.199 --> 00:08:04.920
<v Speaker 2>Absolutely essential for creating parts that need to fit together,

167
00:08:05.279 --> 00:08:08.120
<v Speaker 2>like making housings or interlocking pieces. It shows up in

168
00:08:08.120 --> 00:08:11.439
<v Speaker 2>the Robot project, the D six spinner, even for cleaning

169
00:08:11.480 --> 00:08:12.959
<v Speaker 2>up messy geometry sometimes.

170
00:08:13.120 --> 00:08:16.079
<v Speaker 1>Mm any other key modifiers Oh yeah.

171
00:08:16.399 --> 00:08:19.040
<v Speaker 2>Multi resolution is another good one. It's great for smoothing

172
00:08:19.120 --> 00:08:22.000
<v Speaker 2>things out or adding detail to organic shapes.

173
00:08:21.759 --> 00:08:24.160
<v Speaker 1>Like characters or sculptures exactly.

174
00:08:24.240 --> 00:08:27.519
<v Speaker 2>Instead of manually adding millions of tiny polygons, you can

175
00:08:27.639 --> 00:08:31.120
<v Speaker 2>use multi resolution to subdivide the mesh smoothly and then

176
00:08:31.160 --> 00:08:34.639
<v Speaker 2>maybe sculpt finer details on top. It makes creating smoother,

177
00:08:34.879 --> 00:08:37.840
<v Speaker 2>more natural forms much easier. You see it used on

178
00:08:37.840 --> 00:08:40.159
<v Speaker 2>the Teddy Bear, but also just for smoothing parts of

179
00:08:40.200 --> 00:08:40.759
<v Speaker 2>the Mini Mug.

180
00:08:41.159 --> 00:08:45.639
<v Speaker 1>So modifiers handle complex stuff, will give you higher level controls.

181
00:08:45.240 --> 00:08:48.559
<v Speaker 2>Pretty much, and they can build complex geometry from really

182
00:08:48.600 --> 00:08:53.519
<v Speaker 2>simple starting points too. Like the screw modifier screw like threads,

183
00:08:53.639 --> 00:08:55.720
<v Speaker 2>it can do threads more generally. It takes a two

184
00:08:55.799 --> 00:08:58.559
<v Speaker 2>D profile line just a flat shape and spins it

185
00:08:58.559 --> 00:09:02.960
<v Speaker 2>around an axis lathe you can make vases, bottles, anything

186
00:09:03.039 --> 00:09:03.960
<v Speaker 2>radially symmetrical.

187
00:09:04.080 --> 00:09:04.480
<v Speaker 1>Yeah okay.

188
00:09:04.559 --> 00:09:07.120
<v Speaker 2>Combine that with something like the solidify modifier, which just

189
00:09:07.360 --> 00:09:10.320
<v Speaker 2>adds thickness to a flat surface, and you can create

190
00:09:10.360 --> 00:09:14.879
<v Speaker 2>surprisingly complex hollow printable objects starting from just a simple line.

191
00:09:15.080 --> 00:09:17.440
<v Speaker 2>The face Illusion Base project is a perfect example of

192
00:09:17.480 --> 00:09:20.120
<v Speaker 2>that technique. That sounds efficient, it off, it is, and

193
00:09:20.159 --> 00:09:22.360
<v Speaker 2>it can help ensure the final object is manifold or

194
00:09:22.399 --> 00:09:25.200
<v Speaker 2>water tight, which is super important for the slicer software.

195
00:09:25.399 --> 00:09:28.799
<v Speaker 1>Right, water tight that came up with supports. You also

196
00:09:28.879 --> 00:09:34.039
<v Speaker 1>mentioned accuracy. How does the book handle making things you know,

197
00:09:34.080 --> 00:09:36.679
<v Speaker 1>the right size, especially for functional parts.

198
00:09:36.759 --> 00:09:40.360
<v Speaker 2>Yeah, that's crucial. Blender isn't like traditional CAD, which is

199
00:09:40.399 --> 00:09:43.679
<v Speaker 2>built purely for engineering precision from the ground up, but

200
00:09:44.000 --> 00:09:47.519
<v Speaker 2>the book absolutely shows how you can work accurately. How

201
00:09:47.600 --> 00:09:52.480
<v Speaker 2>so it introduces using real world measurements like with digital calibers.

202
00:09:52.960 --> 00:09:55.200
<v Speaker 2>Measure the thing you want to fit, then model to

203
00:09:55.240 --> 00:09:58.360
<v Speaker 2>those dimensions. Okay, there's even neat trick using grid paper,

204
00:09:58.799 --> 00:10:01.320
<v Speaker 2>lay it flat, take a phot import that image into

205
00:10:01.320 --> 00:10:03.799
<v Speaker 2>Blender as a reference plane. Oh clever, and then model

206
00:10:03.799 --> 00:10:06.600
<v Speaker 2>on top of it. Using the grid for scale, Plus

207
00:10:06.759 --> 00:10:09.000
<v Speaker 2>you learn to use Blender's own measurement tools and grid

208
00:10:09.000 --> 00:10:12.320
<v Speaker 2>snapping features. Projects like the SD card holder ring really

209
00:10:12.399 --> 00:10:15.519
<v Speaker 2>drive home why you need to design specific dimensions. It

210
00:10:15.600 --> 00:10:19.279
<v Speaker 2>often suggests setting blenders units to millimeters to keep things straightforward.

211
00:10:19.440 --> 00:10:22.440
<v Speaker 1>Makes sense. Millimeters are pretty standard for printing, yep.

212
00:10:22.600 --> 00:10:25.639
<v Speaker 2>Then there's a whole different side of modeling organic shapes,

213
00:10:26.080 --> 00:10:29.879
<v Speaker 2>not hard edges and flat surfaces, but curves characters like.

214
00:10:29.840 --> 00:10:32.159
<v Speaker 1>The Teddy Bear you mentioned it exactly that.

215
00:10:32.200 --> 00:10:35.919
<v Speaker 2>Uses a different toolkit. The book introduces the skin modifier first,

216
00:10:36.039 --> 00:10:38.799
<v Speaker 2>which is pretty cool. You make a simple wireframe skeleton

217
00:10:39.200 --> 00:10:42.559
<v Speaker 2>like a stick figure, and the skin modifier instantly adds

218
00:10:42.639 --> 00:10:46.080
<v Speaker 2>volume around it, making a basic mesh body really fast

219
00:10:46.120 --> 00:10:49.639
<v Speaker 2>for blocking out characters or creatures. Then if you want

220
00:10:49.679 --> 00:10:52.919
<v Speaker 2>to pose it, you can get into Armature's actual posable

221
00:10:52.919 --> 00:10:56.240
<v Speaker 2>skeletons inside the mesh and weight painting to control how

222
00:10:56.240 --> 00:10:58.320
<v Speaker 2>the mesh deforms when you move the bones, so.

223
00:10:58.240 --> 00:11:00.080
<v Speaker 1>You can pose it before you print it.

224
00:11:00.320 --> 00:11:02.639
<v Speaker 2>Right, And if we're adding all the soft details, the

225
00:11:02.639 --> 00:11:05.679
<v Speaker 2>fur texture, refining the shape, that's where sculpting tools come in.

226
00:11:05.960 --> 00:11:09.000
<v Speaker 2>It's like working with digital clay. You push, pull, smooth

227
00:11:09.440 --> 00:11:13.559
<v Speaker 2>pinch the match directly very intuitive for organic forms. The

228
00:11:13.559 --> 00:11:15.960
<v Speaker 2>Teddy Bear project walks through that whole process.

229
00:11:16.159 --> 00:11:19.799
<v Speaker 1>Okay, so different tools for different jobs, geometric versus organic.

230
00:11:20.240 --> 00:11:23.799
<v Speaker 1>What about things that need to work mechanically, multiple parts?

231
00:11:23.919 --> 00:11:27.759
<v Speaker 2>Good question definitely covers that the Modular Robot toy blueprint

232
00:11:27.840 --> 00:11:30.759
<v Speaker 2>is a prime example. It's all about designing separate parts

233
00:11:30.840 --> 00:11:33.919
<v Speaker 2>that are meant to connect together, designing your own custom

234
00:11:33.960 --> 00:11:38.200
<v Speaker 2>pegs and sockets, basically and crucially thinking about tolerances.

235
00:11:38.320 --> 00:11:40.919
<v Speaker 1>Tolerances meaning gaps.

236
00:11:40.559 --> 00:11:43.559
<v Speaker 2>Exactly, leaving a tiny gap maybe like zero point two

237
00:11:43.639 --> 00:11:46.720
<v Speaker 2>millimeters between parts that are supposed to fit together, so

238
00:11:46.759 --> 00:11:49.000
<v Speaker 2>they actually do fit. Not too tight, not too loose.

239
00:11:49.360 --> 00:11:51.120
<v Speaker 2>That's vital for functional prints.

240
00:11:51.399 --> 00:11:54.159
<v Speaker 1>Right, Plastic isn't perfectly precise, It isn't.

241
00:11:54.600 --> 00:11:57.600
<v Speaker 2>The D six Spinder project goes even further into mechanical design,

242
00:11:58.080 --> 00:12:01.200
<v Speaker 2>using Blender add ons to generate things like gears and

243
00:12:01.279 --> 00:12:03.879
<v Speaker 2>thinking about how the parts will interact when printed. It

244
00:12:03.919 --> 00:12:07.039
<v Speaker 2>also shows how to clean up geometry issues that sometimes

245
00:12:07.080 --> 00:12:10.200
<v Speaker 2>come from those add ons, like merging duplicate vertices to

246
00:12:10.200 --> 00:12:11.679
<v Speaker 2>make sure the final model is solid.

247
00:12:11.919 --> 00:12:15.960
<v Speaker 1>Okay, tolerances connectors even using add ons, and.

248
00:12:15.960 --> 00:12:18.639
<v Speaker 2>One really important takeaway I think is that the design

249
00:12:18.720 --> 00:12:21.159
<v Speaker 2>process doesn't actually stop when you export the three D

250
00:12:21.279 --> 00:12:24.360
<v Speaker 2>model file. It doesn't. No, the book makes a point

251
00:12:24.559 --> 00:12:27.919
<v Speaker 2>that your design choices continue right into the slicer software.

252
00:12:28.000 --> 00:12:31.480
<v Speaker 1>How so you mean like print speed or temperature, those two.

253
00:12:31.720 --> 00:12:35.440
<v Speaker 2>But also things that directly affect the object's properties like

254
00:12:35.759 --> 00:12:38.519
<v Speaker 2>infill the internal support structure. You can change the pattern

255
00:12:38.600 --> 00:12:40.480
<v Speaker 2>or density. You can even turn off the top and

256
00:12:40.519 --> 00:12:42.159
<v Speaker 2>bottom solid layers entirely.

257
00:12:42.200 --> 00:12:42.960
<v Speaker 1>Why would you do that?

258
00:12:43.080 --> 00:12:46.679
<v Speaker 2>Well, the stretchy braiselet blueprint is a perfect example. By

259
00:12:46.759 --> 00:12:50.279
<v Speaker 2>using a specific low density infill pattern and maybe no

260
00:12:50.360 --> 00:12:54.480
<v Speaker 2>top bottom layers, the resulting print becomes flexible, almost like fabric.

261
00:12:55.080 --> 00:12:57.759
<v Speaker 2>So you're using the slicer settings as a design tool

262
00:12:57.919 --> 00:12:59.600
<v Speaker 2>to get a specific physical property.

263
00:12:59.679 --> 00:13:02.919
<v Speaker 1>Uh that's thinking outside the box or inside the slicer

264
00:13:02.960 --> 00:13:03.559
<v Speaker 1>I guess yeah.

265
00:13:03.639 --> 00:13:07.120
<v Speaker 2>Yeah. And finally, a really practical, vital skill the book

266
00:13:07.159 --> 00:13:08.919
<v Speaker 2>teaches is how to fix models.

267
00:13:09.480 --> 00:13:10.759
<v Speaker 1>Fix broken prints.

268
00:13:10.879 --> 00:13:13.759
<v Speaker 2>No, fix broken digital models, maybe something you downloaded from

269
00:13:13.799 --> 00:13:16.440
<v Speaker 2>online that wasn't actually designed well for three D printing.

270
00:13:16.399 --> 00:13:18.600
<v Speaker 1>H models with errors exactly.

271
00:13:19.080 --> 00:13:21.320
<v Speaker 2>It shows you how to spot and repair common problems

272
00:13:21.440 --> 00:13:22.919
<v Speaker 2>holes in the mesh surface.

273
00:13:23.120 --> 00:13:25.039
<v Speaker 1>Non manifold geomesh non manial.

274
00:13:25.120 --> 00:13:28.120
<v Speaker 2>Yeah, it's where the geometry doesn't make sense physically, like

275
00:13:28.200 --> 00:13:31.559
<v Speaker 2>an edge connected to three faces, or an internal face

276
00:13:31.559 --> 00:13:35.159
<v Speaker 2>dividing the volume. Basically edges or vertices that break the

277
00:13:35.240 --> 00:13:38.600
<v Speaker 2>rule of having a clear inside and outside and also

278
00:13:38.759 --> 00:13:42.519
<v Speaker 2>flipped normals where a surface is facing inwards instead of outwards.

279
00:13:42.559 --> 00:13:44.960
<v Speaker 1>Okay, so problems that confuse the slicer.

280
00:13:45.120 --> 00:13:48.159
<v Speaker 2>Precisely, a three D print needs a perfectly closed, water

281
00:13:48.240 --> 00:13:52.000
<v Speaker 2>tight manifold mesh. The book gives you Blender tools and

282
00:13:52.039 --> 00:13:56.360
<v Speaker 2>techniques to identify those errors and fix them, reclculating normals,

283
00:13:56.399 --> 00:13:59.639
<v Speaker 2>merging vertices, patching holes, essential stuff.

284
00:13:59.720 --> 00:14:02.759
<v Speaker 1>Wow. Okay, that really covers a huge range then, from

285
00:14:02.799 --> 00:14:06.480
<v Speaker 1>just adding a cube all the way through sculpting mechanical parts,

286
00:14:06.519 --> 00:14:09.399
<v Speaker 1>fixing bad models, even using the slicer creatively.

287
00:14:09.559 --> 00:14:12.559
<v Speaker 2>It absolutely does. It really underscores that designing for print

288
00:14:12.840 --> 00:14:15.639
<v Speaker 2>uses a whole spectrum of tools and techniques within Blender.

289
00:14:15.720 --> 00:14:17.440
<v Speaker 2>You pick the wide approach based on what you're trying

290
00:14:17.440 --> 00:14:17.679
<v Speaker 2>to make.

291
00:14:17.840 --> 00:14:19.879
<v Speaker 1>And I think what this deep dive really drawing from

292
00:14:19.960 --> 00:14:22.559
<v Speaker 1>Larsen's whole approach in the book Hammer's Home, is that

293
00:14:22.639 --> 00:14:25.679
<v Speaker 1>core idea learning to design your own stuff. That's probably

294
00:14:25.679 --> 00:14:28.080
<v Speaker 1>the best way to really unlock what these home three

295
00:14:28.120 --> 00:14:29.399
<v Speaker 1>D printers can do today.

296
00:14:29.639 --> 00:14:30.519
<v Speaker 2>I completely agree.

297
00:14:30.600 --> 00:14:33.840
<v Speaker 1>It's about closing that loop, isn't it Taking the idea

298
00:14:33.919 --> 00:14:36.080
<v Speaker 1>from your head or screen and making it into a

299
00:14:36.120 --> 00:14:37.559
<v Speaker 1>real thing you can pick up and use.

300
00:14:37.840 --> 00:14:41.440
<v Speaker 2>Absolutely, and the practical potential that unlocks is just immense.

301
00:14:41.720 --> 00:14:44.919
<v Speaker 2>I mean, think about it. A plastic part breaks on

302
00:14:45.039 --> 00:14:48.240
<v Speaker 2>some appliance. Instead of junking the whole thing, yeah, you

303
00:14:48.240 --> 00:14:50.679
<v Speaker 2>can measure the broken bit, maybe use that grid paper

304
00:14:50.679 --> 00:14:53.080
<v Speaker 2>trick to get the shape right, model or replacement and

305
00:14:53.120 --> 00:14:54.639
<v Speaker 2>print it instant repair.

306
00:14:54.440 --> 00:14:55.960
<v Speaker 1>Like the drawer guide example in the.

307
00:14:55.879 --> 00:14:59.360
<v Speaker 2>Book, exactly like that. Or you invent completely new gadgets

308
00:14:59.639 --> 00:15:03.279
<v Speaker 2>making you unique art pieces, customize toys for your kids,

309
00:15:03.559 --> 00:15:06.799
<v Speaker 2>build those modular robot parts that can be mixed and matched.

310
00:15:07.120 --> 00:15:08.840
<v Speaker 2>The possibilities really open up.

311
00:15:09.240 --> 00:15:12.919
<v Speaker 1>Okay, So final thought, Then, with this power, this ability

312
00:15:12.960 --> 00:15:16.000
<v Speaker 1>to measure the world around you, model it digitally and

313
00:15:16.039 --> 00:15:19.039
<v Speaker 1>then actually print it back into physical reality now kind

314
00:15:19.039 --> 00:15:22.000
<v Speaker 1>of accessible to anyone. How does that change the way

315
00:15:22.039 --> 00:15:26.279
<v Speaker 1>you look at every day objects or problems, or maybe

316
00:15:26.399 --> 00:15:29.279
<v Speaker 1>put another way for you listening, what's the first idea

317
00:15:29.320 --> 00:15:31.720
<v Speaker 1>that's currently just living inside your computer, that you would

318
00:15:31.759 --> 00:15:32.720
<v Speaker 1>want to hold in your hand,