Hello,
Recently, I created a volumetric lattice with one cell. Then I created a new body in the form of a cube overlaying the lattice. Now I wanted to perform CUT operation with target body as the cube and tool body as the lattice. However, I am getting error saying this operation cannot be performed. Any help would be appreciated.
The lattice works correctly. You just have two bodies occupying the same space, one of which obscures the latticed body:
The lattice geometry, under the hood, is mesh based. It does not interact with any of the other usual Fusion 360 modeling tools.
@TrippyLighting wrote:
The lattice geometry, under the hood, is mesh based. It does not interact with any of the other usual Fusion 360 modeling tools.
This is not precisely true. Lattice geometry is volumetric. It is not mesh based. But the result is the same, it does not interact with other geometry (BRep, T-SPlines, or mesh). So, you cannot subtract it from BRep geometry.
@abaxy : "I want to use the CUT operation on these two bodies. Specifically, I want to cut the 'whole' cube ('target body') using the volumetric lattice as the 'tool body'"
But, why do you want to do this? Are you just trying to get the inverse of the lattice? For what reason? If so I suspect that there is a way to modify the lattice to get the inverse of what you have there, but it may take the advanced UI to get there. I am not an expert on this, though.
Yes, you can export the lattice as a mesh. In this simple case, it would be a reasonable sized mesh, but if you want to use it on a larger model, or a more dense lattice, that mesh will likely be huge. And, you still won't be able to subtract it, because mesh geometry and solid geometry are not compatible, either. You can convert the mesh to a BRep, using the "faceted" method, but I would not recommend that, because it would be very slow, and the resulting BRep will also be very slow.
Perhaps if we understood your ultimate goal, we could describe a way to get there.
@jeff_strater wrote:
@TrippyLighting wrote:
The lattice geometry, under the hood, is mesh based. It does not interact with any of the other usual Fusion 360 modeling tools.
This is not precisely true. Lattice geometry is volumetric. It is not mesh based.
Aha, interesting. Thanks for the feedback!
@jeff_strater wrote:
But the result is the same, it does not interact with other geometry (BRep, T-SPlines, or mesh). So, you cannot subtract it from BRep geometry.
Yep, that I was aware of 😉
@abaxy wrote:
Yes, I want to get an inverse lattice.
Understood. the question was: why? What is the ultimate goal?
@abaxy wrote:
Can you redirect this query to someone who knows a way to achieve this? Or tag some experts.
As the director of software development, Jeff is the expert. However, he has limited influence on what features are getting implemented and when.
What physical artifact are you trying to create?
How do you intend to manufacture it?
What is the purpose of the physical artifact?
Fusion
