Mechanical Engineering - Workshop Technology - Discussion

The correct answer is rectangular.

The cross-section of a chisel is typically rectangular, with a flat, broad blade and a straight or slightly curved edge. This shape allows for:

- Efficient removal of material.
- Good control and leverage.
- Effective transmission of force to the cutting edge.

Here's why the other options are incorrect:

- Square: A square cross-section would make the chisel prone to twisting and digging in, rather than smoothly removing material.
- Hexagonal: A hexagonal cross-section is not typical for chisels, and would not provide the same level of control and leverage as a rectangular shape.
- Octagonal: An octagonal cross-section is also not typical for chisels, and would likely make the tool more difficult to handle and control.

Rectangular chisels are commonly used for:

- Removing small amounts of material.
- Parrying and shaping wood or metal.
- Scoring and breaking up material.

=> Note that some specialized chisels, like paring chisels or skew chisels, may have slightly different cross-sectional shapes, but rectangular is the most common and versatile shape.

Strange, but true.

FIRMER chisels have a blade with a rectangular cross-section, and,

Cold chisels are made from carbon tool-steel, which is usually octagonal in cross -section.

Chisels are used to cut the cold metal and are made by forging from cast tool steel of octagonal cross section.

Generally, chisel heads are made hexagonal or Octagonal. But why can't we take hexagonal? Can anyone tell me?

Normally, We use a rectangular cross-section Chisel.

Then What about cold Chisel cross section?

Hot chisel cross section is rectangular.

Cold chisel cross section is hexagonal, octagonal.

Octagonal has 8 sides in the chisel.

How is it possible please explain?

Yes @Jnk.

For industrial use chisel cross section is hexagonal.

Normally, the chisel cross section will be rectangular.

The Usual shapes are rectangular, hexagon, octagon.