What is the name of the hand tool that has small sharp teeth in rows and is used for sharpening or shaping material?
File
Understanding the Hand Tool for Sharpening and Shaping
The question asks to identify a specific type of hand tool based on its description: having small sharp teeth in rows and being used for sharpening or shaping material. Let's examine the characteristics of each tool provided in the options.
Analyzing the Options
- Hacksaw: A hacksaw is a fine-toothed saw used for cutting metal. While it has teeth, its primary purpose is cutting through material, not typically for shaping or sharpening surfaces through abrasion.
- Tap: A tap is a tool used to cut or form the female part (internal threads) of a screw thread. It is used for threading holes, not for general sharpening or shaping of external surfaces by removing small amounts of material with teeth.
- Chisel: A chisel is a tool with a characteristically shaped cutting edge (blade) on its end, used to carve or cut hard materials such as wood, stone, or metal. It is typically used by striking the tool with a mallet or hammer, or by hand pressure. While it shapes material, it does so by cutting or paring, and it doesn't have rows of small sharp teeth like the description suggests.
- File: A file is a hand tool used to shape material by removing small amounts from a workpiece. It is a hard steel tool with parallel rows of sharp teeth or cutting edges. These teeth cut and scrape away material when the file is rubbed against the surface. Files are widely used for smoothing, shaping, deburring, and sharpening various materials like metal, wood, and plastic. This description perfectly matches the tool described in the question – a hand tool with small sharp teeth in rows used for sharpening or shaping material.
Identifying the Correct Hand Tool
Based on the analysis, the tool that fits the description of a hand tool with small sharp teeth in rows used for sharpening or shaping material is a File. Files remove material in small amounts through an abrasive process using their numerous sharp teeth.
| Tool | Primary Use | Presence of Rows of Small Sharp Teeth | Fits Description? |
|---|---|---|---|
| Hacksaw | Cutting metal | Yes (for cutting) | No (not primarily for shaping/sharpening surfaces) |
| Tap | Cutting internal threads | Yes (cutting edges) | No (specific threading use) |
| Chisel | Cutting/carving | No (single cutting edge) | No (different mechanism and edge) |
| File | Shaping, smoothing, sharpening | Yes (for abrasive action) | Yes |
Conclusion
The hand tool characterized by small sharp teeth in rows used for sharpening or shaping materials is the File. Its design allows it to abrade and remove small amounts of material, effectively shaping and smoothing surfaces or sharpening edges.
Revision Table: Hand Tools for Material Working
| Hand Tool | Key Characteristic | Typical Applications |
|---|---|---|
| File | Rows of small sharp teeth | Shaping, smoothing, deburring, sharpening |
| Hacksaw | Thin blade with teeth | Cutting metal and other hard materials |
| Tap | Fluted, tapered body with cutting edges | Cutting internal screw threads |
| Chisel | Bevelled cutting edge | Cutting, carving, paring wood, stone, metal |
Additional Information on Files and Their Uses
Files come in many shapes, sizes, and coarseness (cut grades) depending on the material being worked on and the desired finish. Common shapes include flat, round, half-round, square, and triangular. The cut refers to the spacing and size of the teeth.
- Single-cut files: Have rows of teeth cut in one direction. They remove material slowly and give a smoother finish.
- Double-cut files: Have rows of teeth cut in two directions, crossing each other. They remove material faster but leave a rougher finish.
- Rasp-cut files: Have individual, sharp, raised teeth. Used for coarse work on soft materials like wood and leather.
The coarseness ranges from coarse (bastard cut) to medium (second cut) to fine (smooth cut) to very fine (dead smooth cut). Choosing the right file depends on the material, the amount of material to be removed, and the required surface finish.
Important Questions from File
Which one of the following is a multi-point cutting tool?
What material is used to make file?
Which is not the part of a file?
The file used for filling leather is
The file used for filing the internal right angle side of a job?
