I have a model I am having a problem with. I am trying to add a negative part to it using Bambu Studios. However once I do the mesh boolean funtion.
I get the error “unable to perform boolean operation on model meshes. Only positive parts will be exported”
I have other model where it works just fine on. The only thing I have been able to figure out is this error only happens when I combine “assemble or cut” the model. After doing that, models that is once worked on now get this error. Anyone know what do I need to do to this model to make it work with the add negative parts function and mesh boolean function again?
I have tried using the fix model feature, the simplify model feature. I have also exported it as its own STL file and opened it in a new project. Still no working.
Odds are this is because there’s some “bad geometry” in the STL someplace. Overlapping or self-intersecting polygons or something like a syntax error. Download MeshMixer or NetFabb or MeshLab and see if one of these programs can identify any errors. If one does, it might be able to fix the errors, and if not it ought to at least show you where they are so you could try and fix them.
Right clicking in bambu and picking fix/repair model, even when there isn’t an orange prompt in the right hand corner, fixed it for me and allowed me to cut the holes I was trying to.
worked for me - but it doesn’t work always. Apparently if you repeatedly model a piece with negative parts at some point a model repair won’t do.
In my case I cut a disc, then applied a negative “cupped” cone on it so it would fit inside a cone and then on this modelled cone-disc I wanted to apply another negative part. I exported an STL of every step but for the last one wasn’t able to make the bool mesh operation nor export an STL (which needs the bool mesh operation, of course).
Only solid parts won’t work either. I had a cone attached to another solid object and I received the same error, but just on the cone. How can a cone intersect itself? I’m going with it’s a software issue and needs to be fixed!
I stand corrected. Watch this video. I wanted to use a solid and negative part, I used the difference function and subtracted the negative part and it worked. Mesh boolean | Bambu Lab Wiki
I found a work around for this. Open the . 3MF in Blender each part will be on the collection in folders. So each part of the model will have a dropdown
box with its male or female connector. The trick is the negative female area is actually a object that can have a boolean applied to it via the add modifiers menu > generate > Boolean . Then select the female object as the object to remove. Afterwards remember to delete the actual female object then export your model as a STL.
