You can use mesh files as a reference for your design with solid bodies, or modify it with boolean tools, transformations, and Visualization.
The quality of mesh files is based on the resolution, or level of tessellation. If you lower the resolution, the 3D model will be less accurate. If you increase the resolution, the model will be more accurate. You can "smoothen" the 3D model's surface and therefore customize the resolution by configuring the deviation and angle tolerances. The smaller the tolerance level, the more accurate the surface’s curves are presented. Together, the deviation and angle tolerance levels alter the quality of your export.
If you intend to use 3D printing at home with your filament-based printer, then you can use low-quality export. But if you intend to build the models with CNC machines or an advanced SLA printer (such as a Form 2 printer), you should use high-quality export. In any case, 3MF is the recommended file format for 3D printing.
To use mesh data, save it in a mesh file such as STL or 3MF, and import it into Shapr3D.
For example, you can import a mesh ring base into Shapr3D and extrude a sketch to cut away or subtract from the mesh body. You can also use the mesh body to cut from existing solid bodies.
This is how the end product should look:
You can only use boolean operations with closed (solid) mesh bodies, not open (sheet) mesh. Regardless of the type of boolean operation you use with a mesh body, the body will always stay a mesh body.