How to cut mesh by sketched surface, or mesh converted mesh from the surface.

[straczekjakub]

Dear Community,

I require some tips or help because nowhere I can't find a solution to my problem. YouTube or even uncle Google all the time refer to Body or Surfcase body. Unfortunately, I am working in a MESH environment only.
Challenge: To divide One Mesh Body into smaller pieces of Mesh Bodies. Cutting/ Splitting edge defined by sketch.

The current course of action:
1. One MeshBody, and sketch done in the Surface tab
2. From Sketch, by extrusion in a Surface tab, cutting edge surface done
3a. Created body surface, thicken by 0.1 mm, 3b. The body from 3a converted to the mesh

And here I am stuck. I don't know how to use the combine toon in the Mesh tab to split Mesh Body into numbers of small bodies at one time.

Kind Regards,

John V

[jhackney1972]

Please attach your model.  If you do not know how to attach your Fusion 360 model follow these easy steps. Open the model in Fusion 360, select the File menu, then Export and save as a F3D or F3Z file to your hard drive. Then use the Attachments section, of a forum post, to attach it.

[jeff_strater]

@straczekjakub - first off, you should know:  Fusion is not a mesh modeler.  Yes, there is a mesh environment, but it is not a general-purpose mesh creation or editing tool.  That is why all the documentation refers to solids and surfaces:  Fusion is primarily a BRep modeler.  You might be able to achieve what you want by converting the mesh to a BRep, and doing the cut in that BRep, but it will likely be slow and prone to failure.  If you want to work in mesh, I would recommend some other tool, maybe 3DS Max, or even Blender.

[straczekjakub]

Sorry Sir, but I tried to optimize the model and I can't go down lower than 270MB, and the website attachments can have only 70 MB max. But in the meanwhile tech support called me and they solve my case. After the cutting-edge operation, I need to use the separate function, and it's working fantastic. Thank you very much for your willingness to help. I appreciate it a lot.

Best Regards, John

[TrippyLighting]

Use the sketch and thin extrude a very thin wall.

In the mesh environment use the "Tesselate" command to convert the solid body (the wall you extruded) into a mesh.

Then in the mesh environment you can use the Combine - Cut command to Cut the existing mesh into pieces.

Let us know if that was successful.

[straczekjakub]

Hello,

The main question was what to do after that operation which you described. But I already did it, as described above.
So, if we have already mesh cut into small pieces by mesh surface made from sketch, we still have one body. The cutting operation does not divide the mesh body into multiple mesh bodies. In Solid or surface cutting it does divide into multiple bodies, in a mesh environment this is not happening.
But there is a solution for that as well, Autodesk support showed me how to use a function called Separate. This operation divides already-cut mesh bodies, from one piece into multiple independent mesh bodies.
My problem has been solved 🙂

Kind Regards