[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø46.7 mm and length at least 118.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø44.7 mm over length 29.4 mm (from Z=0.0 to Z=29.4).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.7 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø30.0 mm over length 83.9 mm (from Z=0.0 to Z=83.9).
9. Break all edges (e.g., 2×45° where applicable).
10. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø47.0 mm and length at least 100.7 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø45.0 mm over length 9.1 mm (from Z=0.0 to Z=9.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.0 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø37.9 mm over length 57.1 mm (from Z=0.0 to Z=86.6).
9. Finish turn diameter Ø32.9 mm over length 29.5 mm (from Z=0.0 to Z=29.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø59.7 mm and length at least 313.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø57.7 mm over length 214.0 mm (from Z=0.0 to Z=214.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.7 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø49.8 mm over length 63.0 mm (from Z=0.0 to Z=94.1).
10. Finish turn diameter Ø46.2 mm over length 31.1 mm (from Z=0.0 to Z=31.1).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø71.1 mm and length at least 213.2 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø69.1 mm over length 32.0 mm (from Z=0.0 to Z=32.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø69.1 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø57.1 mm over length 28.1 mm (from Z=0.0 to Z=176.2).
10. Finish turn diameter Ø39.2 mm over length 39.6 mm (from Z=0.0 to Z=148.1).
11. Finish turn diameter Ø35.1 mm over length 37.9 mm (from Z=0.0 to Z=108.5).
12. Finish turn diameter Ø31.5 mm over length 34.1 mm (from Z=0.0 to Z=70.6).
13. Finish turn diameter Ø30.0 mm over length 36.5 mm (from Z=0.0 to Z=36.5).
14. Break all edges (e.g., 2×45° where applicable).
15. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø52.0 mm and length at least 124.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø50.0 mm over length 27.6 mm (from Z=0.0 to Z=27.6).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø50.0 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø39.9 mm over length 38.3 mm (from Z=0.0 to Z=91.8).
9. Finish turn diameter Ø36.0 mm over length 53.5 mm (from Z=0.0 to Z=53.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø71.8 mm and length at least 218.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø69.8 mm over length 28.9 mm (from Z=0.0 to Z=28.9).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø69.8 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø52.2 mm over length 52.8 mm (from Z=0.0 to Z=184.5).
10. Finish turn diameter Ø47.5 mm over length 25.2 mm (from Z=0.0 to Z=131.7).
11. Finish turn diameter Ø43.1 mm over length 20.4 mm (from Z=0.0 to Z=106.5).
12. Finish turn diameter Ø36.7 mm over length 36.8 mm (from Z=0.0 to Z=86.1).
13. Finish turn diameter Ø30.0 mm over length 49.3 mm (from Z=0.0 to Z=49.3).
14. Break all edges (e.g., 2×45° where applicable).
15. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø57.1 mm and length at least 277.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø55.1 mm over length 66.1 mm (from Z=0.0 to Z=66.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø55.1 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø48.5 mm over length 13.3 mm (from Z=0.0 to Z=206.3).
10. Finish turn diameter Ø44.0 mm over length 50.5 mm (from Z=0.0 to Z=193.0).
11. Finish turn diameter Ø30.8 mm over length 105.5 mm (from Z=0.0 to Z=142.5).
12. Finish turn diameter Ø30.0 mm over length 37.0 mm (from Z=0.0 to Z=37.0).
13. Break all edges (e.g., 2×45° where applicable).
14. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø65.7 mm and length at least 198.8 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø63.7 mm over length 145.2 mm (from Z=0.0 to Z=145.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø63.7 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø52.6 mm over length 28.9 mm (from Z=0.0 to Z=48.6).
10. Finish turn diameter Ø46.8 mm over length 19.7 mm (from Z=0.0 to Z=19.7).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø41.3 mm and length at least 299.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø39.3 mm over length 127.1 mm (from Z=0.0 to Z=127.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø39.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 167.0 mm (from Z=0.0 to Z=167.0).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø60.3 mm and length at least 162.9 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø58.3 mm over length 39.3 mm (from Z=0.0 to Z=39.3).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø58.3 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø50.6 mm over length 35.4 mm (from Z=0.0 to Z=118.6).
9. Finish turn diameter Ø33.8 mm over length 48.1 mm (from Z=0.0 to Z=83.2).
10. Finish turn diameter Ø30.0 mm over length 35.1 mm (from Z=0.0 to Z=35.1).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.1 mm and length at least 95.5 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø54.1 mm over length 32.9 mm (from Z=0.0 to Z=32.9).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.1 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø41.8 mm over length 16.5 mm (from Z=0.0 to Z=57.6).
9. Finish turn diameter Ø37.7 mm over length 41.1 mm (from Z=0.0 to Z=41.1).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø46.5 mm and length at least 181.6 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø44.5 mm over length 103.8 mm (from Z=0.0 to Z=103.8).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.5 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø37.3 mm over length 47.9 mm (from Z=0.0 to Z=72.8).
9. Finish turn diameter Ø30.0 mm over length 24.9 mm (from Z=0.0 to Z=24.9).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø55.7 mm and length at least 108.2 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø53.7 mm over length 26.0 mm (from Z=0.0 to Z=26.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø53.7 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø37.1 mm over length 30.4 mm (from Z=0.0 to Z=77.2).
9. Finish turn diameter Ø30.0 mm over length 46.8 mm (from Z=0.0 to Z=46.8).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø63.2 mm and length at least 294.2 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø61.2 mm over length 13.1 mm (from Z=0.0 to Z=13.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø61.2 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø48.7 mm over length 46.1 mm (from Z=0.0 to Z=276.1).
10. Finish turn diameter Ø36.8 mm over length 14.6 mm (from Z=0.0 to Z=230.0).
11. Finish turn diameter Ø30.0 mm over length 215.4 mm (from Z=0.0 to Z=215.4).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø34.6 mm and length at least 276.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø32.6 mm over length 77.0 mm (from Z=0.0 to Z=77.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø32.6 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 194.3 mm (from Z=0.0 to Z=194.3).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø43.8 mm and length at least 135.8 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø41.8 mm over length 12.2 mm (from Z=0.0 to Z=12.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø41.8 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø35.8 mm over length 45.2 mm (from Z=0.0 to Z=118.6).
9. Finish turn diameter Ø30.0 mm over length 73.4 mm (from Z=0.0 to Z=73.4).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø33.5 mm and length at least 182.7 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø31.5 mm over length 51.0 mm (from Z=0.0 to Z=51.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø31.5 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 126.7 mm (from Z=0.0 to Z=126.7).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø33.1 mm and length at least 239.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø31.1 mm over length 15.0 mm (from Z=0.0 to Z=15.0).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø31.1 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 219.4 mm (from Z=0.0 to Z=219.4).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø46.3 mm and length at least 172.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø44.3 mm over length 48.2 mm (from Z=0.0 to Z=48.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.3 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø39.6 mm over length 39.3 mm (from Z=0.0 to Z=119.2).
9. Finish turn diameter Ø34.7 mm over length 64.6 mm (from Z=0.0 to Z=79.9).
10. Finish turn diameter Ø30.0 mm over length 15.3 mm (from Z=0.0 to Z=15.3).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø46.3 mm and length at least 68.6 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø44.3 mm over length 13.4 mm (from Z=0.0 to Z=13.4).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø44.3 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø37.0 mm over length 8.7 mm (from Z=0.0 to Z=50.2).
9. Finish turn diameter Ø30.0 mm over length 41.5 mm (from Z=0.0 to Z=41.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø54.0 mm and length at least 120.5 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø52.0 mm over length 30.6 mm (from Z=0.0 to Z=30.6).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø52.0 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø35.0 mm over length 22.6 mm (from Z=0.0 to Z=84.9).
9. Finish turn diameter Ø30.0 mm over length 62.3 mm (from Z=0.0 to Z=62.3).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 260.0 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø30.0 mm over length 190.5 mm (from Z=0.0 to Z=190.5).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø27.5 mm over length 64.5 mm (from Z=0.0 to Z=64.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø47.3 mm and length at least 288.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø45.3 mm over length 123.2 mm (from Z=0.0 to Z=123.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø38.3 mm over length 84.2 mm (from Z=0.0 to Z=159.9).
10. Finish turn diameter Ø30.0 mm over length 75.7 mm (from Z=0.0 to Z=75.7).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø79.2 mm and length at least 243.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø77.2 mm over length 38.1 mm (from Z=0.0 to Z=38.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø77.2 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø60.5 mm over length 44.9 mm (from Z=0.0 to Z=200.3).
10. Finish turn diameter Ø54.4 mm over length 35.4 mm (from Z=0.0 to Z=155.4).
11. Finish turn diameter Ø38.4 mm over length 48.6 mm (from Z=0.0 to Z=120.0).
12. Finish turn diameter Ø30.0 mm over length 71.4 mm (from Z=0.0 to Z=71.4).
13. Break all edges (e.g., 2×45° where applicable).
14. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø59.3 mm and length at least 307.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø57.3 mm over length 51.9 mm (from Z=0.0 to Z=51.9).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø47.0 mm over length 101.8 mm (from Z=0.0 to Z=250.5).
10. Finish turn diameter Ø41.8 mm over length 66.6 mm (from Z=0.0 to Z=148.7).
11. Finish turn diameter Ø30.0 mm over length 82.1 mm (from Z=0.0 to Z=82.1).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø79.4 mm and length at least 227.0 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø77.4 mm over length 69.5 mm (from Z=0.0 to Z=69.5).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø77.4 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø57.6 mm over length 58.7 mm (from Z=0.0 to Z=152.5).
10. Finish turn diameter Ø46.8 mm over length 15.2 mm (from Z=0.0 to Z=93.8).
11. Finish turn diameter Ø30.0 mm over length 78.6 mm (from Z=0.0 to Z=78.6).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø62.4 mm and length at least 107.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø60.4 mm over length 38.4 mm (from Z=0.0 to Z=38.4).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø60.4 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø49.5 mm over length 9.2 mm (from Z=0.0 to Z=63.7).
9. Finish turn diameter Ø38.9 mm over length 14.8 mm (from Z=0.0 to Z=54.5).
10. Finish turn diameter Ø30.0 mm over length 39.7 mm (from Z=0.0 to Z=39.7).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø50.4 mm and length at least 215.7 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø48.4 mm over length 33.8 mm (from Z=0.0 to Z=33.8).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø48.4 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø44.2 mm over length 14.4 mm (from Z=0.0 to Z=176.9).
10. Finish turn diameter Ø37.0 mm over length 75.0 mm (from Z=0.0 to Z=162.5).
11. Finish turn diameter Ø30.9 mm over length 87.5 mm (from Z=0.0 to Z=87.5).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø47.3 mm and length at least 304.7 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø45.3 mm over length 80.2 mm (from Z=0.0 to Z=80.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø45.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø39.1 mm over length 104.7 mm (from Z=0.0 to Z=219.5).
10. Finish turn diameter Ø34.6 mm over length 114.8 mm (from Z=0.0 to Z=114.8).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø70.0 mm and length at least 291.8 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø68.0 mm over length 45.5 mm (from Z=0.0 to Z=45.5).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø68.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø60.2 mm over length 78.4 mm (from Z=0.0 to Z=241.3).
10. Finish turn diameter Ø49.5 mm over length 131.3 mm (from Z=0.0 to Z=162.9).
11. Finish turn diameter Ø30.8 mm over length 31.6 mm (from Z=0.0 to Z=31.6).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø59.9 mm and length at least 231.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø57.9 mm over length 87.8 mm (from Z=0.0 to Z=87.8).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø57.9 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø45.7 mm over length 44.4 mm (from Z=0.0 to Z=138.3).
10. Finish turn diameter Ø30.0 mm over length 93.9 mm (from Z=0.0 to Z=93.9).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 128.5 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø30.0 mm over length 102.5 mm (from Z=0.0 to Z=102.5).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø21.2 mm over length 21.0 mm (from Z=0.0 to Z=21.0).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø41.4 mm and length at least 307.2 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø39.4 mm over length 68.3 mm (from Z=0.0 to Z=68.3).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø39.4 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø32.7 mm over length 18.1 mm (from Z=0.0 to Z=233.9).
10. Finish turn diameter Ø30.0 mm over length 215.8 mm (from Z=0.0 to Z=215.8).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø45.4 mm and length at least 236.6 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø43.4 mm over length 24.1 mm (from Z=0.0 to Z=24.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø43.4 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 207.5 mm (from Z=0.0 to Z=207.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø32.0 mm and length at least 198.0 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø30.0 mm over length 141.6 mm (from Z=0.0 to Z=141.6).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø29.6 mm over length 51.4 mm (from Z=0.0 to Z=51.4).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.1 mm and length at least 76.8 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø54.1 mm over length 18.3 mm (from Z=0.0 to Z=18.3).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.1 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø48.7 mm over length 22.2 mm (from Z=0.0 to Z=53.5).
9. Finish turn diameter Ø42.2 mm over length 31.3 mm (from Z=0.0 to Z=31.3).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø81.5 mm and length at least 259.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø79.5 mm over length 10.4 mm (from Z=0.0 to Z=10.4).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø79.5 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø71.6 mm over length 57.2 mm (from Z=0.0 to Z=243.7).
10. Finish turn diameter Ø61.1 mm over length 23.9 mm (from Z=0.0 to Z=186.5).
11. Finish turn diameter Ø49.3 mm over length 80.7 mm (from Z=0.0 to Z=162.6).
12. Finish turn diameter Ø37.2 mm over length 81.9 mm (from Z=0.0 to Z=81.9).
13. Break all edges (e.g., 2×45° where applicable).
14. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø40.7 mm and length at least 259.5 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø38.7 mm over length 65.2 mm (from Z=0.0 to Z=65.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø38.7 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø32.6 mm over length 35.4 mm (from Z=0.0 to Z=189.3).
10. Finish turn diameter Ø30.0 mm over length 153.9 mm (from Z=0.0 to Z=153.9).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø80.7 mm and length at least 141.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø78.7 mm over length 23.9 mm (from Z=0.0 to Z=23.9).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø78.7 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø72.0 mm over length 60.3 mm (from Z=0.0 to Z=112.5).
9. Finish turn diameter Ø53.6 mm over length 52.2 mm (from Z=0.0 to Z=52.2).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø65.8 mm and length at least 303.4 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø63.8 mm over length 36.6 mm (from Z=0.0 to Z=36.6).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø63.8 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø54.9 mm over length 43.5 mm (from Z=0.0 to Z=261.8).
10. Finish turn diameter Ø38.8 mm over length 52.2 mm (from Z=0.0 to Z=218.3).
11. Finish turn diameter Ø30.6 mm over length 45.7 mm (from Z=0.0 to Z=166.1).
12. Finish turn diameter Ø30.0 mm over length 120.4 mm (from Z=0.0 to Z=120.4).
13. Break all edges (e.g., 2×45° where applicable).
14. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø76.7 mm and length at least 150.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø74.7 mm over length 23.8 mm (from Z=0.0 to Z=23.8).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø74.7 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø68.1 mm over length 32.8 mm (from Z=0.0 to Z=121.5).
9. Finish turn diameter Ø62.8 mm over length 88.7 mm (from Z=0.0 to Z=88.7).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø56.5 mm and length at least 188.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø54.5 mm over length 127.8 mm (from Z=0.0 to Z=127.8).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø54.5 mm.
6. Face the end and set Z=0.
7. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
8. Finish turn diameter Ø45.0 mm over length 39.0 mm (from Z=0.0 to Z=55.5).
9. Finish turn diameter Ø30.2 mm over length 16.5 mm (from Z=0.0 to Z=16.5).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a aluminium alloy round bar (material EN AW-6082) with diameter at least Ø32.0 mm and length at least 317.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø30.0 mm over length 188.2 mm (from Z=0.0 to Z=188.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø19.8 mm over length 124.1 mm (from Z=0.0 to Z=124.1).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø48.3 mm and length at least 321.9 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø46.3 mm over length 105.3 mm (from Z=0.0 to Z=105.3).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø46.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø35.3 mm over length 90.7 mm (from Z=0.0 to Z=211.6).
10. Finish turn diameter Ø30.0 mm over length 120.9 mm (from Z=0.0 to Z=120.9).
11. Break all edges (e.g., 2×45° where applicable).
12. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 42CrMo4) with diameter at least Ø37.3 mm and length at least 202.8 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø35.3 mm over length 29.2 mm (from Z=0.0 to Z=29.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø35.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 168.6 mm (from Z=0.0 to Z=168.6).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø62.1 mm and length at least 299.3 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø60.1 mm over length 109.2 mm (from Z=0.0 to Z=109.2).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø60.1 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø51.5 mm over length 69.7 mm (from Z=0.0 to Z=185.1).
10. Finish turn diameter Ø47.4 mm over length 68.5 mm (from Z=0.0 to Z=115.4).
11. Finish turn diameter Ø35.5 mm over length 46.9 mm (from Z=0.0 to Z=46.9).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material 16MnCr5) with diameter at least Ø53.7 mm and length at least 207.9 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø51.7 mm over length 48.1 mm (from Z=0.0 to Z=48.1).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø51.7 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø43.7 mm over length 47.1 mm (from Z=0.0 to Z=154.8).
10. Finish turn diameter Ø31.5 mm over length 12.9 mm (from Z=0.0 to Z=107.7).
11. Finish turn diameter Ø30.0 mm over length 94.8 mm (from Z=0.0 to Z=94.8).
12. Break all edges (e.g., 2×45° where applicable).
13. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a steel round bar (material C45) with diameter at least Ø36.5 mm and length at least 281.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø34.5 mm over length 74.5 mm (from Z=0.0 to Z=74.5).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø34.5 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 201.6 mm (from Z=0.0 to Z=201.6).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø32.0 mm and length at least 239.1 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø30.0 mm over length 164.3 mm (from Z=0.0 to Z=164.3).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø30.0 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø22.5 mm over length 69.8 mm (from Z=0.0 to Z=69.8).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.


[User] Generate the machining process for the shaft in the image. Use the exact 10–11 step template.

[Assistant]
1. Select a stainless steel round bar (material 1.4301) with diameter at least Ø49.3 mm and length at least 187.7 mm to allow machining allowances.
2. Mount the bar in a three-jaw chuck.
3. Face the end.
4. Finish turn the holding diameter Ø47.3 mm over length 62.6 mm (from Z=0.0 to Z=62.6).
5. Mount the bar in a three-jaw chuck by the holding diameter Ø47.3 mm.
6. Face the end and set Z=0.
7. Center-drill the free end and support the bar with tail support.
8. Rough turn the remaining outer surfaces leaving ~0.5–1.0 mm stock per side for finishing.
9. Finish turn diameter Ø30.0 mm over length 120.1 mm (from Z=0.0 to Z=120.1).
10. Break all edges (e.g., 2×45° where applicable).
11. Remove the workpiece from the lathe.