Dedan Kimathi University of Technology. Course; Manufacturing Processes I
BENCH PROCESSES
Technical Core Competencies:
• Precision Marking Out: Expert techniques for transferring dimensions using surface gauges, angle plates, and scribers.
• Industrial Work Holding: Mechanical principles of the bench vice, including serrated vs. soft jaw selection and height
optimization.
• Material Removal & Sawing: Selection of saw blade pitch (TPI) based on material hardness and stroke performance.
• Advanced Filing Operations: Comprehensive study of 8 file cross-sections and the application of Cross, Alternate, and Draw
filing for superior finishes.
• Tool Care & Metrology: Maintenance protocols for preventing rust and dulling, alongside inspection using Vernier and
micrometer instruments.
Professional Value Proposition:
• Process-Driven: Detailed procedural steps for operations like "Pinning" and "Chipping".
• Industry Standard: Includes critical data on teeth-per-inch (TPI) for grades from Rough (20 TPI) to Dead Smooth (100+ TPI).
• Visual Reference: Optimized with high-fidelity diagrams illustrating the precise direction of motion for manual machining.
1|Page
, BENCH PROCESSES
Benchwork involves the operations done by human rather than on a machine when creating features that
require less power.
Common bench work operations and tools/ equipments.
Marking out
Transferring dimensions from a plan to a workpiece in preparation for next processes such as sawing or
machining.
• Marking out table- Working surface.
• Angle plates- Hold workpieces
perpendicular to the table or desired angle.
2|Page
BENCH PROCESSES
Technical Core Competencies:
• Precision Marking Out: Expert techniques for transferring dimensions using surface gauges, angle plates, and scribers.
• Industrial Work Holding: Mechanical principles of the bench vice, including serrated vs. soft jaw selection and height
optimization.
• Material Removal & Sawing: Selection of saw blade pitch (TPI) based on material hardness and stroke performance.
• Advanced Filing Operations: Comprehensive study of 8 file cross-sections and the application of Cross, Alternate, and Draw
filing for superior finishes.
• Tool Care & Metrology: Maintenance protocols for preventing rust and dulling, alongside inspection using Vernier and
micrometer instruments.
Professional Value Proposition:
• Process-Driven: Detailed procedural steps for operations like "Pinning" and "Chipping".
• Industry Standard: Includes critical data on teeth-per-inch (TPI) for grades from Rough (20 TPI) to Dead Smooth (100+ TPI).
• Visual Reference: Optimized with high-fidelity diagrams illustrating the precise direction of motion for manual machining.
1|Page
, BENCH PROCESSES
Benchwork involves the operations done by human rather than on a machine when creating features that
require less power.
Common bench work operations and tools/ equipments.
Marking out
Transferring dimensions from a plan to a workpiece in preparation for next processes such as sawing or
machining.
• Marking out table- Working surface.
• Angle plates- Hold workpieces
perpendicular to the table or desired angle.
2|Page
