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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Learn how to use direct editing techniques to modify existing geometry on imported or history-free models. Make design changes such as rotating ribs, moving and copying features, and removing unwanted geometry.
Type:
Tutorial
Length:
6 min.
Transcript
00:03
Direct modeling is also powerful when working with
00:06
models that have no history associated with them.
00:10
Notice in the timeline that this part has no history and is just a base feature.
00:17
Let's use direct modeling techniques to edit this history free model.
00:23
We want to remove these unnecessary small ribs
00:27
to do that.
00:28
We'll select the faces we want removed.
00:32
However,
00:33
we also need to select 1/4 face to let fusion
00:36
know how to heal the area that we are removing
00:44
here. You can see that by removing this extra fourth face,
00:47
this other face will grow back to the next boundary face.
00:53
Let's repeat the same procedure. On the other side,
01:07
direct modeling is also useful to fix minor issues with your design.
01:13
In this example, we can see that these two faces are at a different angle
01:18
and we want them to be the same
01:23
by selecting one of the faces and deleting it.
01:26
The angle of that face is now constant.
01:35
Direct modeling can also be used to help fix modeling errors
01:39
that were created. But unforeseen.
01:42
For example, this step down on the back of the part may not have been intended
01:49
in other C ad systems.
01:50
One might have to project a profile and re extrude it.
01:54
But that would overlap the other machining features such as the slot
02:00
using direct modeling,
02:02
we can just select the two faces we want removed and delete them away.
02:09
Notice how fusion fixed the area by growing the faces and even extending the filets.
02:17
Another design change we need to make is to
02:19
move this screw boss down by a few millimeters
02:24
by just drawing a selection box around the boss,
02:28
we can freely move the faces altogether.
02:35
However,
02:36
if we edit the free move in the timeline,
02:39
notice, it does not tell us how far we moved the screw boss.
02:44
Instead
02:46
we should use the translate option in move
03:05
notice. Now when we edit the move feature in the timeline,
03:09
it shows us how far we moved and even allows us to update the distance.
03:15
So
03:16
we recommend that you don't use the free move unless
03:19
you don't care about capturing the distance or angle.
03:24
Now, let's say not only do we want to move the screw boss down a little bit,
03:28
but we also want to rotate it a few degrees
03:32
using a crossing selection,
03:35
we can select more faces and rotate them around a circular edge.
03:42
Notice it is keeping the tangy correct when rotating the faces
03:52
looking at these ribs. Here,
03:55
it was decided that they should end more in line with the screw mounts
04:00
because there is no sketch to modify or features to change.
04:05
We will have to use direct modeling to accomplish this,
04:11
select the two faces we want to move
04:13
and then rotate them around a circular edge.
04:18
Notice the preview shows what the result will look like
04:22
and notice it even extends the filet if necessary.
04:26
That's direct modeling at its best.
04:31
Let's do the same thing on the other side.
04:41
Unfortunately, again, due to bad modeling practices,
04:44
we can see that this filet isn't tangential
04:47
to this other edge. Like it should be,
04:52
we can fix that by just deleting it
04:54
and notice how the other faces grow to a sharp point.
05:00
We can now measure the other face to find out what its radius is
05:04
and use that to create a new filet
05:13
there.
05:14
We now fix the problematic filet with a nice new tangential filet. Like it should be.
05:22
The last thing we need to do is to make a major change to the model.
05:27
It was determined that only one supporting rib at the front
05:30
of this part is not strong enough for the thin plastic ring
05:37
using direct modeling, we can just rotate the existing rib 35 degrees.
05:44
Instead of having to create a new sketch or machine away geometry,
05:48
we can just use the existing geometry.
05:53
Now, we will just mirror these faces over to the other side
05:57
and just like that, we have fixed the problem
Video transcript
00:03
Direct modeling is also powerful when working with
00:06
models that have no history associated with them.
00:10
Notice in the timeline that this part has no history and is just a base feature.
00:17
Let's use direct modeling techniques to edit this history free model.
00:23
We want to remove these unnecessary small ribs
00:27
to do that.
00:28
We'll select the faces we want removed.
00:32
However,
00:33
we also need to select 1/4 face to let fusion
00:36
know how to heal the area that we are removing
00:44
here. You can see that by removing this extra fourth face,
00:47
this other face will grow back to the next boundary face.
00:53
Let's repeat the same procedure. On the other side,
01:07
direct modeling is also useful to fix minor issues with your design.
01:13
In this example, we can see that these two faces are at a different angle
01:18
and we want them to be the same
01:23
by selecting one of the faces and deleting it.
01:26
The angle of that face is now constant.
01:35
Direct modeling can also be used to help fix modeling errors
01:39
that were created. But unforeseen.
01:42
For example, this step down on the back of the part may not have been intended
01:49
in other C ad systems.
01:50
One might have to project a profile and re extrude it.
01:54
But that would overlap the other machining features such as the slot
02:00
using direct modeling,
02:02
we can just select the two faces we want removed and delete them away.
02:09
Notice how fusion fixed the area by growing the faces and even extending the filets.
02:17
Another design change we need to make is to
02:19
move this screw boss down by a few millimeters
02:24
by just drawing a selection box around the boss,
02:28
we can freely move the faces altogether.
02:35
However,
02:36
if we edit the free move in the timeline,
02:39
notice, it does not tell us how far we moved the screw boss.
02:44
Instead
02:46
we should use the translate option in move
03:05
notice. Now when we edit the move feature in the timeline,
03:09
it shows us how far we moved and even allows us to update the distance.
03:15
So
03:16
we recommend that you don't use the free move unless
03:19
you don't care about capturing the distance or angle.
03:24
Now, let's say not only do we want to move the screw boss down a little bit,
03:28
but we also want to rotate it a few degrees
03:32
using a crossing selection,
03:35
we can select more faces and rotate them around a circular edge.
03:42
Notice it is keeping the tangy correct when rotating the faces
03:52
looking at these ribs. Here,
03:55
it was decided that they should end more in line with the screw mounts
04:00
because there is no sketch to modify or features to change.
04:05
We will have to use direct modeling to accomplish this,
04:11
select the two faces we want to move
04:13
and then rotate them around a circular edge.
04:18
Notice the preview shows what the result will look like
04:22
and notice it even extends the filet if necessary.
04:26
That's direct modeling at its best.
04:31
Let's do the same thing on the other side.
04:41
Unfortunately, again, due to bad modeling practices,
04:44
we can see that this filet isn't tangential
04:47
to this other edge. Like it should be,
04:52
we can fix that by just deleting it
04:54
and notice how the other faces grow to a sharp point.
05:00
We can now measure the other face to find out what its radius is
05:04
and use that to create a new filet
05:13
there.
05:14
We now fix the problematic filet with a nice new tangential filet. Like it should be.
05:22
The last thing we need to do is to make a major change to the model.
05:27
It was determined that only one supporting rib at the front
05:30
of this part is not strong enough for the thin plastic ring
05:37
using direct modeling, we can just rotate the existing rib 35 degrees.
05:44
Instead of having to create a new sketch or machine away geometry,
05:48
we can just use the existing geometry.
05:53
Now, we will just mirror these faces over to the other side
05:57
and just like that, we have fixed the problem
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