Fusion is lagging and crashing on simple tasks

[qgg5uisuxxvs]

Good to to whoever will be reading this. Been using Fusion for 3D modeling some simple tasks, like developing a door lock knob etc. Attempting to create a "ducktail" for a car, makes it lag on simple tasks like "Press and pull". However Fusion is not using even half of the PC potential.

I have attempted to change setting in Nvidia panel, to change settings in Fusion preferences to use all 12 cores...but it still lags extremly hard. I can play smoothly Overwatch in UHD at max settings and have YouTube open with 4k video at the same time while Fusion is lagging there for 3-5 mins for a simple task or crashes.

The only thing I haven't done, is cancelling the history line, because I need it in order to go back and do some changes.

[Phil.E]

Hi,

Thanks for sending in those crash reports. Very helpful. It would help even more if I could use your model to reproduce the crash. Can you share a link? If I can reproduce the crash it can be debugged and probably fixed.

I'm curious about the image you show. In the attempted operation you are using press pull on an interior face created by the shell. However the press pull (offset) has some settings that really make a difference here.

"Automatic" option means: "Fusion will offset the faces created by the feature that created all of these faces". This is the same as "Modify existing feature" option.

"New offset" option means: "Fusion will offset just the faces you have selected for a new offset"

Are you intending to make that one face (in your image) thicker, or all the faces. If you intend to make the entire shell thicker, edit the shell command that made those faces. If you intend to make just one face thicker, use "New Offset" option. 

Thanks,

[qgg5uisuxxvs]

Hello! Thank you for your reply and feedback.

I was attempting to extend the selected face. Managed to do it with your "new offset" trick, but it still lagged out. 

Here is the link to the file.https://a360.co/3g1flf3 

I'm still doing my first steps in Fusion, so I'm aware only of the basics.

I'm attempting to make the back side (front as we see on the screenshot) not plain, but curved.

Right now it is " | ", and I'm trying to figure out how to make it " ) " or " \ " without changing the width of the item.

So far I got to create a shell and attempting to use Fillet to make it curvy. Not much a of success so far though.

[qgg5uisuxxvs]

I have managed to accomplish my task (more or less) successfully according to what I had in mind and can't really express it with help of "Draft" (Making it from " I " to " \") . However it lagged during this operation for about 2 mins.

[Phil.E]

Thanks for the model. Can you tell me what steps you took that were causing a crash?

[qgg5uisuxxvs]

For example it crashed during opening recovery file after previous crash.

Or now I'm trying to make the bottom line, which has more of form " Г ", to make look like " C ", to smooth out the angle. Basically no matter what instrument I pick "Fillet, Draft, Offset face" - it goes into neverending calculations or something. So instead of telling me "you are doing wrong, try something else", it goes into constant hanging.

My best guess is that it is not using all resources. I've seen other posts where people are having whole engine bays developed and experience some discomfort, but I'm having crashes on "kid stuff".

System specs just in case on the AIDA screenshot below.

[Phil.E]

It's not that you are doing anything "wrong". It is that the shape of the model, the way it was constructed, etc. all lend to very long compute cycles for features that change some or many faces at once. Fusion is doing what you are asking, it's computing everything in the model, including all the sketches, extrudes, fillets, chamfers, etc. in your model. 

I made a video to compare your model to a more simple method for creating a similar shape. In this video I play the timeline for your part. You can see all the features that Fusion must compute to get to the final shape. At the very end of the video, I show how that shape can be made with two sketches and a single sweep feature. Of course, you could add more rails to the sweep to give it more control, or use Loft with multiple profiles and rails.

With sweep: Any changes to the profile are instantaneous, and do not cause a long chain reaction of feature computing. The faces are all well connected as well. Let me know if I can help more with this.

[qgg5uisuxxvs]

Not sure if I've done everything right according to your recommendations, but I have redone the model and everything seems to be okay. Thank you!

I also have a quick question, if you don't mind, so I don't create another post. Comes out that shape of the trunk is in form of C in 2 dimensions, not just 1.

Is there a way to bend the solid body like on the screenshot, without going back and redoing everything?

 

[Phil.E]

Bending the model is not possible in Fusion. There isn't a command that can do that.

The best way to achieve that is to put the bend into the sweep path-sketch.