- Fitting involves shaping, assembling, and finishing metal or other materials using hand tools, power tools, and precision instruments.
- Common Fitting Hand Tools & Their Uses
| Tool |
Function |
Application |
| Hacksaw |
Cutting metal, plastic, wood |
Cutting rods, pipes, sheets |
| Files |
Smoothening rough edges, shaping |
Used for precision finishing |
| Chisels |
Removing excess material |
Used for shaping metal & wood |
| Hammers |
Striking, bending, shaping |
Used in fitting and assembling |
| Punches |
Marking and indenting metal |
Used before drilling holes |
| Taps & Dies |
Creating internal/external threads |
Used for making screw threads |
| Screwdrivers |
Driving screws |
Assembling & disassembling components |
| Spanners & Wrenches |
Tightening & loosening nuts and bolts |
Used in mechanical fitting |
- Care & Maintenance of Hand Tools
- Keep clean & free from rust (apply light oil coating).
- Store in dry, organized toolboxes to prevent damage.
- Sharpen cutting tools (files, chisels) regularly for efficiency.
- Power tools increase efficiency and precision in fitting tasks.
| Power Tool |
Function |
Application |
| Drilling Machine |
Drills holes in metal, wood, plastic |
Used in assembly and fabrication |
| Grinding Machine |
Smoothens & sharpens surfaces |
Used for removing excess material |
| Power Hacksaw |
Cutting metal with precision |
Used in industrial cutting |
| Angle Grinder |
Cutting, grinding, polishing |
Used for shaping and finishing |
| Electric Screwdriver |
Fastens screws with power |
Speeds up assembly work |
- Care & Maintenance of Power Tools
- Inspect wiring & plugs for damage to prevent electrical hazards.
- Keep tools lubricated & free from debris.
- Store in dry places to prevent corrosion.
- Use proper protective gear (gloves, goggles) during operation.
- Precision measuring tools are essential for accuracy in fitting tasks.
- Types of Measuring Instruments
| Instrument |
Function |
Accuracy |
| Steel Rule |
Measuring lengths, depths |
±0.5mm |
| Vernier Caliper |
Measures internal & external dimensions |
±0.02mm |
| Micrometer Screw Gauge |
Measures thickness & diameters |
±0.01mm |
| Dial Gauge |
Measures small linear distances |
±0.001mm |
| Feeler Gauge |
Measures gap widths |
±0.02mm |
| Bevel Protector |
Measures angles accurately |
±0.1° |
- Care & Maintenance of Measuring Instruments
- Store in dry places to prevent rust.
- Avoid dropping or mishandling to maintain accuracy.
- Regular calibration ensures precise measurements.
- Clean with soft cloth & oil for long-lasting performance.
Types of Drilling Machines & Their Applications
| Type |
Application |
| Hand Drill |
Small, manual drilling operations |
| Bench Drill |
Mounted drill for precision hole-making |
| Pillar Drill |
Heavy-duty drilling in workshops |
| Radial Drill |
Used for large & heavy workpieces |
| CNC Drill |
Automated drilling in manufacturing |
- Care & Maintenance of Drilling Machines
- Keep chuck & drill bits clean.
- Regularly inspect motor & wiring.
- Lubricate moving parts to prevent overheating.
Types of Grinding Machines
| Type |
Function |
| Bench Grinder |
Sharpens tools, removes burrs |
| Surface Grinder |
Produces smooth finishes |
| Cylindrical Grinder |
Grinds cylindrical surfaces |
| Angle Grinder |
Cuts, polishes, and removes rust |
- Care & Maintenance of Grinding Machines
- Check grinding wheels for cracks before use.
- Ensure proper wheel alignment to prevent wobbling.
- Use correct grinding speed for the material.
