Fix corrupt models using the wound and heal method. On particularly difficult models, see how to remove the problematic region to allow changes to be made.
Transcript
00:04
Working with imported geometry from other C AD products can sometimes be difficult
00:08
due to the lack of history or poor modeling processes.
00:12
This is where Fusion direct modeling really shines.
00:17
Here is an example of an imported PRO E model.
00:21
As we interrogate the model,
00:23
you can see that there are extra edges on some of the corner filets.
00:27
Also notice that there are a lot of extra edges in
00:31
the filet that goes around the top edge of this model.
00:35
If we were to machine this, we could potentially see these edges on our finished part
00:40
due to non tangent curves.
00:43
It makes sense for us to clean up this model before manufacturing it.
00:48
Fusion's direct modeling is very powerful
00:51
yet there are even times when you will try to do a simple direct edit
00:55
and it will fail.
00:58
Here's a prime example,
01:00
we want to remove these two filets off of
01:03
the model to make it one nice continuous filet
01:07
when we select the filets and try to delete them,
01:11
notice that it fails and we receive an error message.
01:15
This is probably due to the odd neighboring filets.
01:20
So
01:21
how can we resolve this?
01:24
Let's use a method that I call the wound and heal method.
01:29
Basically, we are going to remove the problematic areas
01:33
and let fusion heal the regions back together.
01:38
The quickest and easiest way to create the wound
01:42
is to create a sphere and then subtract it out of the model
01:47
to create the wound. We first need to have a construction plane to locate the sphere.
01:52
We recommend using plane along a path,
01:57
select one of the edges near where you want to create the wound
02:01
and then drag the plane to the end of that edge.
02:05
Now,
02:06
using the sphere command,
02:08
we can place the sphere right where it needs to be.
02:14
You wanna make sure to size the spherical
02:16
wound to enclose all of the problematic area,
02:21
do not leave any small sliver faces.
02:24
However,
02:25
don't make it so large that it starts to destroy other areas of your model.
02:33
Now, you can see how the spherical wound has removed all of the problematic area
02:38
and now we have nice clean boundaries.
02:42
Let's repeat the procedure on the other side.
02:55
Now,
02:56
when we delete the filets,
02:57
you can see that it works this time.
03:01
This is because the spherical wounds created clean boundaries
03:05
that weren't touching problematic areas.
03:10
We can also easily delete the wounds by just selecting the single spherical face
03:15
and selecting delete.
03:25
Next, let's take a look at the region at the top of this part.
03:30
We have a lot of work to do up here.
03:32
But because it's connected to the rest of this complicated park,
03:36
any change we try to make could potentially fail.
03:41
So instead of creating just a small wound,
03:44
we're gonna amputate this whole region away from the rest of the model.
03:50
An easy way to do this is to use a profile to split the region away.
03:57
We will use a simple rectangle. In this example,
04:09
after doing a split body, using the rectangle as the splitting tool,
04:13
you can see that we are left with two separate bodies.
04:19
Let's go ahead and hide the larger part for now
04:24
by working on such a smaller section of the complicated model,
04:27
we have a better chance of our modification working as fusion
04:31
is not having to calculate all of the neighboring faces.
04:37
The first thing to change is that there are
04:39
three ribs that are in a weird orientation.
04:43
One of the ribs looks correct,
04:45
but the other two are off center.
04:49
Let's delete the two ribs that are incorrect.
04:57
Now,
04:58
we want to remove the filets off of the remaining rib,
05:02
but we don't want to have to select all of the filet faces individually.
05:08
We can just draw a selection box around the whole rib.
05:12
Then using the shift key
05:14
uns select the three faces that define the rib.
05:20
This way,
05:21
we are able to select a large selection of faces without having to do it manually.
05:28
When we complete the delete command,
05:30
we can see that all of the filet faces were removed,
05:33
but the ribs stayed in place.
05:37
The next step is to remove all of the problematic filets on the top,
05:41
we obviously don't want to select them individually.
05:44
So let's look at it from the side and draw a selection box around all of them.
05:50
However,
05:51
it also selected the top face
05:54
so we can just hold down the shift key to unselected
05:59
with all of the filets on the top face selected.
06:02
Let's go ahead and delete them.
06:05
However,
06:05
notice that we get an error message saying that the filets cannot be deleted.
06:11
This seems like it would be a simple direct edit.
06:14
So why did it not work
06:17
again?
06:17
It's probably because of issues with the neighboring filets and faces
06:22
that's causing fusion to not understand how to heal those regions.
06:28
The solution here is to remove as many of the neighboring faces at the same time.
06:35
So
06:36
let's select the top faces again.
06:38
But this time
06:39
we'll hold down the shift key and select all of the vertical filet areas. Also,
06:51
then
06:52
we'll add in the large filets at the bottom using the shift key.
07:02
When we hit the delete key,
07:04
all of the filets are removed all at once.
07:08
Now we can go back and add the filets back onto the model.
07:19
Notice how nice the one millimeter filet looks on the top edge. Now
07:25
to finish up, we can do a radial pattern on the rib
07:29
to put them back into the correct location.
07:46
Finally, we can add the one millimeter filet around the edges of the ribs.
07:58
So
07:58
very quickly, we were able to fix all of the problematic areas in this region.
08:05
The last thing to do is to join the two parts back into one part
08:10
using the combined join command.
08:14
So
08:15
the wound and heal method is really helpful when working with imported geometry.
08:23
Let's take a look at another example. With this truck grill,
08:28
it has been determined that the little mounting bracket would be stronger if it
08:32
was moved to be lined up with one of the existing supporting ribs.
08:40
This should be a simple move
08:42
but notice when we try and move the bracket fusion can't do it.
08:47
This is probably due to poor modeling practices on the imported model.
08:53
Notice that there is a small sliver face here
08:56
and extra faces on the front of the model that don't make sense,
09:01
we can fix that by selecting them
09:04
and using the delete key.
09:15
Now that we have fixed this area. Let's try the move again.
09:25
Unfortunately,
09:27
again, it fails.
09:30
We're gonna have to use our amputation example here,
09:40
just draw a simple rectangle around the area we want to work with.
09:45
We can then use this rectangle as the splitting tool. When we split the body,
09:58
let's hide the larger part for now.
10:02
Now let's try the move.
10:09
Notice that it works this time
10:11
because we have separated all of the rest
10:13
of the problematic model from this section.
10:17
In this example,
10:19
we want to move the mounting bracket a very specific distance.
10:23
However, we don't know what that distance is.
10:27
We can solve this by projecting the existing geometry
10:31
and drawing a reference line from the center of
10:33
the mounting bracket to the center of the rib.
10:45
Now, when we run the move command, we can select a point to point, move
10:51
and specify the two points.
10:56
Notice how the mounting bracket moves the
10:59
correct distance to be perfectly centered.
11:08
After turning the other part back on,
11:10
we can combine the two bodies back into one.
11:18
So
11:18
here you got to see how we were able to fix
11:21
an imported part with no history tree using direct modeling.
00:04
Working with imported geometry from other C AD products can sometimes be difficult
00:08
due to the lack of history or poor modeling processes.
00:12
This is where Fusion direct modeling really shines.
00:17
Here is an example of an imported PRO E model.
00:21
As we interrogate the model,
00:23
you can see that there are extra edges on some of the corner filets.
00:27
Also notice that there are a lot of extra edges in
00:31
the filet that goes around the top edge of this model.
00:35
If we were to machine this, we could potentially see these edges on our finished part
00:40
due to non tangent curves.
00:43
It makes sense for us to clean up this model before manufacturing it.
00:48
Fusion's direct modeling is very powerful
00:51
yet there are even times when you will try to do a simple direct edit
00:55
and it will fail.
00:58
Here's a prime example,
01:00
we want to remove these two filets off of
01:03
the model to make it one nice continuous filet
01:07
when we select the filets and try to delete them,
01:11
notice that it fails and we receive an error message.
01:15
This is probably due to the odd neighboring filets.
01:20
So
01:21
how can we resolve this?
01:24
Let's use a method that I call the wound and heal method.
01:29
Basically, we are going to remove the problematic areas
01:33
and let fusion heal the regions back together.
01:38
The quickest and easiest way to create the wound
01:42
is to create a sphere and then subtract it out of the model
01:47
to create the wound. We first need to have a construction plane to locate the sphere.
01:52
We recommend using plane along a path,
01:57
select one of the edges near where you want to create the wound
02:01
and then drag the plane to the end of that edge.
02:05
Now,
02:06
using the sphere command,
02:08
we can place the sphere right where it needs to be.
02:14
You wanna make sure to size the spherical
02:16
wound to enclose all of the problematic area,
02:21
do not leave any small sliver faces.
02:24
However,
02:25
don't make it so large that it starts to destroy other areas of your model.
02:33
Now, you can see how the spherical wound has removed all of the problematic area
02:38
and now we have nice clean boundaries.
02:42
Let's repeat the procedure on the other side.
02:55
Now,
02:56
when we delete the filets,
02:57
you can see that it works this time.
03:01
This is because the spherical wounds created clean boundaries
03:05
that weren't touching problematic areas.
03:10
We can also easily delete the wounds by just selecting the single spherical face
03:15
and selecting delete.
03:25
Next, let's take a look at the region at the top of this part.
03:30
We have a lot of work to do up here.
03:32
But because it's connected to the rest of this complicated park,
03:36
any change we try to make could potentially fail.
03:41
So instead of creating just a small wound,
03:44
we're gonna amputate this whole region away from the rest of the model.
03:50
An easy way to do this is to use a profile to split the region away.
03:57
We will use a simple rectangle. In this example,
04:09
after doing a split body, using the rectangle as the splitting tool,
04:13
you can see that we are left with two separate bodies.
04:19
Let's go ahead and hide the larger part for now
04:24
by working on such a smaller section of the complicated model,
04:27
we have a better chance of our modification working as fusion
04:31
is not having to calculate all of the neighboring faces.
04:37
The first thing to change is that there are
04:39
three ribs that are in a weird orientation.
04:43
One of the ribs looks correct,
04:45
but the other two are off center.
04:49
Let's delete the two ribs that are incorrect.
04:57
Now,
04:58
we want to remove the filets off of the remaining rib,
05:02
but we don't want to have to select all of the filet faces individually.
05:08
We can just draw a selection box around the whole rib.
05:12
Then using the shift key
05:14
uns select the three faces that define the rib.
05:20
This way,
05:21
we are able to select a large selection of faces without having to do it manually.
05:28
When we complete the delete command,
05:30
we can see that all of the filet faces were removed,
05:33
but the ribs stayed in place.
05:37
The next step is to remove all of the problematic filets on the top,
05:41
we obviously don't want to select them individually.
05:44
So let's look at it from the side and draw a selection box around all of them.
05:50
However,
05:51
it also selected the top face
05:54
so we can just hold down the shift key to unselected
05:59
with all of the filets on the top face selected.
06:02
Let's go ahead and delete them.
06:05
However,
06:05
notice that we get an error message saying that the filets cannot be deleted.
06:11
This seems like it would be a simple direct edit.
06:14
So why did it not work
06:17
again?
06:17
It's probably because of issues with the neighboring filets and faces
06:22
that's causing fusion to not understand how to heal those regions.
06:28
The solution here is to remove as many of the neighboring faces at the same time.
06:35
So
06:36
let's select the top faces again.
06:38
But this time
06:39
we'll hold down the shift key and select all of the vertical filet areas. Also,
06:51
then
06:52
we'll add in the large filets at the bottom using the shift key.
07:02
When we hit the delete key,
07:04
all of the filets are removed all at once.
07:08
Now we can go back and add the filets back onto the model.
07:19
Notice how nice the one millimeter filet looks on the top edge. Now
07:25
to finish up, we can do a radial pattern on the rib
07:29
to put them back into the correct location.
07:46
Finally, we can add the one millimeter filet around the edges of the ribs.
07:58
So
07:58
very quickly, we were able to fix all of the problematic areas in this region.
08:05
The last thing to do is to join the two parts back into one part
08:10
using the combined join command.
08:14
So
08:15
the wound and heal method is really helpful when working with imported geometry.
08:23
Let's take a look at another example. With this truck grill,
08:28
it has been determined that the little mounting bracket would be stronger if it
08:32
was moved to be lined up with one of the existing supporting ribs.
08:40
This should be a simple move
08:42
but notice when we try and move the bracket fusion can't do it.
08:47
This is probably due to poor modeling practices on the imported model.
08:53
Notice that there is a small sliver face here
08:56
and extra faces on the front of the model that don't make sense,
09:01
we can fix that by selecting them
09:04
and using the delete key.
09:15
Now that we have fixed this area. Let's try the move again.
09:25
Unfortunately,
09:27
again, it fails.
09:30
We're gonna have to use our amputation example here,
09:40
just draw a simple rectangle around the area we want to work with.
09:45
We can then use this rectangle as the splitting tool. When we split the body,
09:58
let's hide the larger part for now.
10:02
Now let's try the move.
10:09
Notice that it works this time
10:11
because we have separated all of the rest
10:13
of the problematic model from this section.
10:17
In this example,
10:19
we want to move the mounting bracket a very specific distance.
10:23
However, we don't know what that distance is.
10:27
We can solve this by projecting the existing geometry
10:31
and drawing a reference line from the center of
10:33
the mounting bracket to the center of the rib.
10:45
Now, when we run the move command, we can select a point to point, move
10:51
and specify the two points.
10:56
Notice how the mounting bracket moves the
10:59
correct distance to be perfectly centered.
11:08
After turning the other part back on,
11:10
we can combine the two bodies back into one.
11:18
So
11:18
here you got to see how we were able to fix
11:21
an imported part with no history tree using direct modeling.
