• Fusion

Making changes to history-free models using direct editing

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.


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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