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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing
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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:03
In a previous video, we were extruding from curves.
00:07
And this pick type setting is important because if
00:10
I now select here on this wheel arch,
00:13
you can see that it's picked the limit surfaces
00:15
instead of the control cage edges.
00:18
And I don't get the result that I want.
00:21
So undo that
00:22
and then if I change the pick type here to Edges, this time,
00:26
it picks the control cage edges as I wanted
00:29
and extrudes as I'd expect.
00:33
Now All would seem like a good general setting.
00:36
But what happens is you tend to end up having the Pick Chooser always popping up
00:40
for the surface, the edge or the face and this becomes a bit inefficient.
00:46
So one of the best ways to work is to close Extrude
00:50
and then pick the objects and turn on the controls display
00:54
and then use the Pick tool, so I'll do edge loops here,
00:58
because when I then go to the Extrude tool,
01:01
the option gets automatically set correctly
01:04
and then I can do the extrude.
01:09
So if we now have a look at the roof
01:11
this time, I'll start with the tool and set it to Edges.
01:15
But note that it's not edge loops. So the first click will turn the controls on,
01:19
but then I have to select edge by edge.
01:23
But I can use Shift to select the last edge with my Add
01:26
mouse button
01:27
to pick the whole edge loop.
01:29
So that Add mouse button is whatever you've got set to Add in the Selection Options.
01:35
And the default is the middle mouse button,
01:37
but you may have them set differently, so make sure you check that.
01:41
Then I can do the extrude.
01:43
And I'm gonna have a look at these two options.
01:47
Weld Together refers to in-between the new faces.
01:51
So these are welded together and smooth.
01:54
So if I turn that off, you can see that now the edges aren't welded.
01:58
So you're almost always going to keep that on.
02:02
But also the new extrude is welded to the original, so it's a smooth connection.
02:07
But if you turn on Edges As New Bodies, then it gets created as a new separate SubD.
02:14
But you need to be careful that when you do the next extrude, that you take that off
02:18
if you want them to continue being connected.
02:24
And the tip here is that if you make a mistake with the manipulator like this,
02:28
you can't just undo the transform.
02:31
Instead, the last extrude gets undone and you get taken out of the tool.
02:38
You can also extrude from faces.
02:40
So if we have a look at this sat nav shape
02:43
it tends to work well on closed forms like this.
02:46
So I can pick these two central faces
02:49
and then like before the Extrude
02:51
tool automatically switches
02:52
to whatever I've got selected, so in this case faces.
02:57
So what happens is that those faces get moved
02:60
and their new faces are added in the gap that's created.
03:04
So I can shrink that down and quite easily create a protrusion for the antenna.
03:13
But if we have a look at the hood,
03:14
this is built in one half with an open edge here on the center line.
03:19
So if I want to create a hood scoop
03:21
then I can pick these three faces
03:24
and just raise that up a bit.
03:27
But then when I shade the limit surfaces, it looks a bit strange round here.
03:32
But you can see why in box mode because
03:34
it's just created these extra faces on the inside.
03:37
And I can just delete those,
03:39
but I can't select because the vertex display was
03:42
only temporary whilst the extrude tool is active.
03:45
So I need to pick the object and display the vertices
03:47
first and then I can just pick and delete those faces.
Video transcript
00:03
In a previous video, we were extruding from curves.
00:07
And this pick type setting is important because if
00:10
I now select here on this wheel arch,
00:13
you can see that it's picked the limit surfaces
00:15
instead of the control cage edges.
00:18
And I don't get the result that I want.
00:21
So undo that
00:22
and then if I change the pick type here to Edges, this time,
00:26
it picks the control cage edges as I wanted
00:29
and extrudes as I'd expect.
00:33
Now All would seem like a good general setting.
00:36
But what happens is you tend to end up having the Pick Chooser always popping up
00:40
for the surface, the edge or the face and this becomes a bit inefficient.
00:46
So one of the best ways to work is to close Extrude
00:50
and then pick the objects and turn on the controls display
00:54
and then use the Pick tool, so I'll do edge loops here,
00:58
because when I then go to the Extrude tool,
01:01
the option gets automatically set correctly
01:04
and then I can do the extrude.
01:09
So if we now have a look at the roof
01:11
this time, I'll start with the tool and set it to Edges.
01:15
But note that it's not edge loops. So the first click will turn the controls on,
01:19
but then I have to select edge by edge.
01:23
But I can use Shift to select the last edge with my Add
01:26
mouse button
01:27
to pick the whole edge loop.
01:29
So that Add mouse button is whatever you've got set to Add in the Selection Options.
01:35
And the default is the middle mouse button,
01:37
but you may have them set differently, so make sure you check that.
01:41
Then I can do the extrude.
01:43
And I'm gonna have a look at these two options.
01:47
Weld Together refers to in-between the new faces.
01:51
So these are welded together and smooth.
01:54
So if I turn that off, you can see that now the edges aren't welded.
01:58
So you're almost always going to keep that on.
02:02
But also the new extrude is welded to the original, so it's a smooth connection.
02:07
But if you turn on Edges As New Bodies, then it gets created as a new separate SubD.
02:14
But you need to be careful that when you do the next extrude, that you take that off
02:18
if you want them to continue being connected.
02:24
And the tip here is that if you make a mistake with the manipulator like this,
02:28
you can't just undo the transform.
02:31
Instead, the last extrude gets undone and you get taken out of the tool.
02:38
You can also extrude from faces.
02:40
So if we have a look at this sat nav shape
02:43
it tends to work well on closed forms like this.
02:46
So I can pick these two central faces
02:49
and then like before the Extrude
02:51
tool automatically switches
02:52
to whatever I've got selected, so in this case faces.
02:57
So what happens is that those faces get moved
02:60
and their new faces are added in the gap that's created.
03:04
So I can shrink that down and quite easily create a protrusion for the antenna.
03:13
But if we have a look at the hood,
03:14
this is built in one half with an open edge here on the center line.
03:19
So if I want to create a hood scoop
03:21
then I can pick these three faces
03:24
and just raise that up a bit.
03:27
But then when I shade the limit surfaces, it looks a bit strange round here.
03:32
But you can see why in box mode because
03:34
it's just created these extra faces on the inside.
03:37
And I can just delete those,
03:39
but I can't select because the vertex display was
03:42
only temporary whilst the extrude tool is active.
03:45
So I need to pick the object and display the vertices
03:47
first and then I can just pick and delete those faces.
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