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holes wizard holes performed on flat walls are simple to perform. The challenge may be a hole e.g.. the angular displacement of the cylinder. Such a hole should be done by selecting a 3D sketch. First things first.

1. Select the wall, which has created an opening defining its parameters. note, that by moving the wall section is always directed to the axis of the cylinder wall. At the same time it receives a sketch relationship On the surface.

2. Added sketch point relationship with one of the planes passing through the center of the workpiece. This will be the relationship On the surface. If the object is so oriented, that no such plane, You can refer to the portion of the wall or insert issued with one flat plane. Theoretically, it is not necessary, but it will be a reference for calculating the angular displacement.

3. Possibly add other dimensions, so that the sketch was under defined.

4. Select a wall opening and enable the operation Move face. It is available (when you turn on the menu) right mouse button, or you can find it in the Insert menu > Wall > Move or on the surface / direct Edition.

Show temporary axes and select properties as the type of operation Rotate. If the wall has already been selected will be labeled as a blue field, only point to the axis of rotation in the Parameters. Now just enter the rotation angle and ready.