topic Re: Error - "A problem combining geometry together" - when trying to cut one body with another using combine in Fusion Design, Validate & Document Forum

Error - "A problem combining geometry together" - when trying to cut one body with another using combine

16goulde — Sat, 20 Dec 2025 18:21:53 GMT

Error shown above and document is attached. I am trying to cut into Base front using Halo cut tool, but it gives me this error message.

I had this issue earlier in my document but I managed to fix it by deleting unnecessary faces. This time, to my knowledge, there aren't any unnecessary or weird faces (at least not like before), so I'm not sure what the issue is.

Also, I managed to cut into the Base back body using Halo cut tool (it is the combine at the end of the timeline) so I'm not sure why it would be different when cutting into Base front.

There is one sketch with issues as can be seen in the timeline, but I don't see why this would interfere because when I manage lost projections in the sketch, there is only one point which I don't even need - the issue is that Fusion won't let me do anything to it (even with the manage lost projections tools).

I'd greatly appreciate it if anyone could provide some insight on this. Also it's my first time posting anything here so sorry if this is in the wrong board or forum.

Thanks

Re: Error - "A problem combining geometry together" - when trying to cut one body with another using combine

TheCADWhisperer — Sat, 20 Dec 2025 20:47:15 GMT

@16goulde

I would not use faceted geometry if this were my design...

Not only is it planar faceted - but there are also a ring of holes going through the geometry.

If you remove all of the voids from the toolbody it should work...

Re: Error - "A problem combining geometry together" - when trying to cut one body with another using combine

16goulde — Sun, 21 Dec 2025 00:13:48 GMT

Thank you so much! I used patches and boundary fill to fix it and it works now.