Use the CSG concept of tree structure basic primitives bloc

. Use the CSG concept of tree structure (basic primitives; block, cylinders, etc) and Boolean operations node) show the stages that the following part is transformed and designed.

Solution

To make the curved edge/fillet

1.first intersect the cylinder and the rectangle. Then to make hole use subtraction of the cylinder of smaller size.

2.Similarly for the smaller cylindrical part first subtract the cylinder with rectangle so as to achieve the boundary and then use the additive part to extrude the cylinder and then subtract cylinder to form the hollow cylinder.