Toposolid cut out error

[astent2DG22]

Hi all,

I'm hoping someone can help me as this error is driving me mad, I'm trying to cut out the outline of a building from a topo solid using a created in place void extrusion. This has worked ok for the majority of the building, but creates an error that just says "can't make cut out" when I try to alter the outline to include the conservatory. I have tried numerous ways of approaching this, such as making this as a seperate object, which seems to cutout the outline of the conservatory else where on the site toposolid, but when I try to move it into the correct location, I get the same error. 

The problem seems to be the intersection with this particular are of the Toposolid, but I have no idea why or how to fix it. Any help would be greatly appreciated.

Thanks

[azMY2WT]

I had the same problem just now. Try isolate the void component with the toposolid and make the cut. It seems there is a bug when you are trying to do it and there are other elements in them.

[ar00302]

Any news on how to resolve that?

I have the same situation.

It seems like the first time I used toposolid void it worked. 

After saving, reopen the file and try to modify the toposolid cause an error.

[drewh_guna]

I'm having the same problem. Have tried it many different ways to just test it and alas "can't make cut". I was high on Toposolids at first, but am getting increasingly frustrated with this new direction Autodesk has taken. Fix this bug Autodesk! I also have to wait minutes for a successful cut to finish it's process. Very frustrating and time-wasting.

[jay_colc]

Please take a look at the following article. Particularly to Cut/ Join link.

https://help.autodesk.com/view/RVT/2024/ENU/?guid=GUID-858EA2C5-9FE8-422C-981A-D9D017F82E3B

hopefully it will not linked to the 20 mile limit?

[csedaKMM6L]

I had the same issue and just solved it. When creating/tracing your building outline, try offsetting the extrusion sketch 6" off the face of your building. Then cut the toposolid, and finish the in-place model. Apparently, it really doesn't want to intersect with any other object. 

[tfilter]

This offset worked for me.  do not think it will be the best solution for all cases.  best if Autodesk works on fixing this bug.  

[mitchcantlon]

thanks, after wasting about an hour I found this.

But what a ridiculous workaround - had to offset my void 5mm and it would cut, wouldn't cut to the exact slab outline.

This is such a stupid backwards step in functionality vs pads - does Autodesk even listen to users?

[rvtsprojekce]

REVIT 2026 STILL NOT POSSIBLE TO CUT ALL OF BUILDING ELEMENTS TO TOPOSOLID...IS BIG ISSUE ..I TRIED TWO YERS DO SOME HACK TO WORK WITH TOPO....TOPOGENERIC MODEL FORM TOPOSOLID STILL HAVE THE SAME ISSUE WITH CUTTING ...I THINK TOPOSOLID IS UNUSABLE ... SECTION VIEWS HAS VERY FAT LINES AND LINES BEHAVIOR IS TOTALLY BAD ..ON SHEETS AND ARCHITECTURAL DRWING IS NOT USBALE STILL AT YEAR 2026 ...VERY FLUSTRATING ,,,NOT FUNNY !!!! WAKE UP AUTODESK ENGINEERS!!! 

THIS IS A SIMPLE DISGUSTING DISGUST

THIS IS A SIMPLE DISGUSTING DISGUST

[alberto.proserpio]

same issue. it seems that if the void form intersects voids already present (such as shafts, in my case), it does not work. maybe a bug you could try to fix by revit 2039?