Cut is working on multiple bodies. Only cut the body the sketch is attached to?

[Anonymous]

Hi all,

I have a few bodies near each other.  I'm placing a rectangle sketch on one of the bodies and cutting a channel through it.  Works great.  Unfortunately though, there are objects from another assembly that are in the path of that cut and they also get cut.

I know there has to be a way to localise the cut to the body I'm working on but I can't find it for the life of me.  Any advice would be greatly appreciated.

Thank you, Rob

[jeff_strater · Accepted solution]

Hi @Anonymous,

Good question.  To change the bodies that participate in the cut, simply turn off the visibility of the bodies (light bulb in the browser) of the bodies you don't want to be cut.

Hopefully that is clear, if not, I can make a screencast.

Jeff

[Anonymous]

Hi Jeff, thanks for the reply on that. Am doing a render so quickly asking here further so I don't interrupt it.

Do I have to turn off the body visibility, do the cut, then turn it back on or do I have to turn it off and keep it off so it doesn't get intersected by the cut?

Thanks again, Rob

[Anonymous]

I couldn't help myself, I interrupted the render. I'll add this for anyone searching in the future:

If you simply take the timeline back, hide the object then drag the timeline forward again the cut still happens on the other object.

If you take the timeline back, delete the future cut, then hide the object and apply the cut again as a new feature then it will not cut into it.

So it appears the timeline feature doesn't work in this situation. 

Thanks again Jeff, much appreciated and hope this helps someone in the future.

Rob

[jeff_strater]

How this works is:  Fusion does not take into account body visibility at compute time to determine what gets cut, only at feature edit or create time.  This is intentional.  We really don't want a cosmetic change such as visibility to affect the compute results - that would be pretty bad behavior, because, as you said, it would mean that body could never be visible when the design is edited/re-computed.  Instead, to change the bodies affected, you would need to edit the feature.  You don't have to go quite as far as deleting the cut and re-applying it, simply editing that feature, turning off the visibility of the body you don't want to be affected, and OK the edit.

Jeff