1. Select a stainless steel semi-finished bar (material 1.4301) with a diameter of at least Ø65 mm and a length suitable to allow machining allowances.
2. Mount the bar into a three-jaw chuck of the lathe.
3. Use a right-hand turning tool and face off the end.
4. Turn the outer diameter Ø60 mm over a length of 50 mm.
5. Turn the diameter Ø40 mm over a length of 30 mm.
6. Chamfer all edges 2×45°.
6. Cut off the workpiece


1. Select a stainless steel semi-finished bar (material 1.4301) with a diameter of at least Ø125 mm and a length suitable to allow machining allowances.
2. Mount the bar into a three-jaw chuck of the lathe.
3. Use a right-hand turning tool and face off the end.
4. Turn the outer diameter Ø120 mm over a length of 65 mm.
5. Turn the diameter Ø110 mm over a length of 30 mm.
6. Turn the diameter Ø100 mm to a length of 45 mm.
7. Turn the diameter Ø90 mm over a length of 25 mm.
8. Chamfer all edges 2×45°.
9. Cut off the workpiece.