how to cut an object using a line
Yes @Anonymous 🙂 You can simply use Modify -> Split Body
It will open a modal window with two required inputs: Body to Split and Splitting tool
The line is the splitting tool obviously.
If you are not happy with the cutting direction, you will need to use the line and create a plane at an angle using the line and use the plane as a splitting tool instead 🙂 reply if you need that in screen shots otherwise I believe these will help
This Split body as set out on the early photo does not complete
Need more detail if this is not what you mean.
It is common in fusion where the shape has high face count - such as after converting mesh to BREP - that splitting operations fail to compute or the software crashes. For demonstration purposes I accomplished splitting the body to 2 parts (not what you asked for) but this might give you an idea of how to do it. I can also do whatever you intended if you can clarify what are the " i just want to cut the small parts marked on red" what red? where? I can definitely get you where you need It would be helpful to have some annotation/explanation of what you'd want to cut/split out 🙂
Here are screenshots of accomplished task splitting the body into two parts - yet I used a rectangle from a sketch to cut away half of the body at a time - which means I had to make 2 copies of the original body. It is less likely the the cut will fail to compute ! 🙂
One last thing @Anonymous I made some crazy exploration and turned the mesh model to Quad Mesh in Blender brought it back in and converted to BREP. It is still ridiculously heavy lol but it looks way smooth!
