topic Re: Fusion 360 eliminates features while combining bodies in Fusion Design, Validate & Document Forum

Fusion 360 eliminates features while combining bodies

yuriy.tymchuk — Fri, 07 Apr 2023 13:18:34 GMT

I have a case when, after combining bodies, features on one of them (line press-pull on a hole and fillet) get eliminated. How does that even happen? I understand that sometimes it's hard to combine bodies, but why a hole (which does not even intersect the other body) changes diameter???

Re: Fusion 360 eliminates features while combining bodies

TheCADWhisperer — Fri, 07 Apr 2023 12:21:18 GMT

@yuriy.tymchuk

Can you File>Export your *.f3d file to your local drive and then Attach it here to a Reply?

Re: Fusion 360 eliminates features while combining bodies

yuriy.tymchuk — Fri, 07 Apr 2023 13:21:57 GMT

@TheCADWhisperer added

Re: Fusion 360 eliminates features while combining bodies

TrippyLighting — Fri, 07 Apr 2023 13:45:08 GMT

That looks like a bug to me!

@Phil.E

Re: Fusion 360 eliminates features while combining bodies

Phil.E — Fri, 07 Apr 2023 14:49:50 GMT

Thanks for calling on me, but when I test the combine feature using the attached model I don't get any strange results.

Someone else will be looking closely at this file, but for now, just redo the operation again it should be fine.

Re: Fusion 360 eliminates features while combining bodies

jeff_strater — Fri, 07 Apr 2023 14:50:08 GMT

I'm not sure what is going on here, TBH. But, I did notice, by trial and error, that Compute All seems to fix whatever it is. So, while we research the original problem, that should get you going again, @yuriy.tymchuk

(view in My Videos)

Re: Fusion 360 eliminates features while combining bodies

jeff_strater — Fri, 07 Apr 2023 15:01:38 GMT

even just editing that one Combine feature seems to fix it. I have had problems trying to reproduce this problem. If you come up with a way to do that, we'd appreciate it. Thanks

Re: Fusion 360 eliminates features while combining bodies

yuriy.tymchuk — Fri, 07 Apr 2023 15:02:09 GMT

Thank you all. Just one more piece of info: when I did it for the first time, everything was fine. But after I change some parameters, it got into the broken state.

P.S. I know that there are many suboptimal design decisions. But the model changed authors 3 times and each one of us tried to add some really good "improvement"

P.P.S. @jeff_strater thank you for the suggestion to use "Compute All". Today I've learned something new 🙂

Re: Fusion 360 eliminates features while combining bodies

yuriy.tymchuk — Fri, 07 Apr 2023 15:19:48 GMT

Update #2, after I ran "Compute All" two extrudes on the back side got missing 😂 (and although the middle hinge is constructed by extruding to the missing face, it appears to be completely fine)

Re: Fusion 360 eliminates features while combining bodies

TrippyLighting — Fri, 07 Apr 2023 15:23:08 GMT

@jeff_strater @Phil.E I did not perform a compute-all as IN my own work I very, very rarely need to do that.

I simply downloaded the model and moved the timeline marker to before and after the combine feature.

Re: Fusion 360 eliminates features while combining bodies

jeff_strater — Tue, 11 Apr 2023 00:21:08 GMT

We are still investigating this. There is definitely something strange going on with that model. I think most times you can get it to work, but yes, there are some strange behaviors that we still need to understand. Thanks for bringing this to our attention.