Parts Description
The parts of a straight razor and their function are described as follows: The narrow end of the blade rotates on a pin called the pivot, between two protective pieces called the scales or handle. The upward curved metal end of the narrow part of the blade beyond the pivot is called the tang and acts as a lever to help raise the blade from the handle. One or two fingers resting on the tang also help stabilize the blade while shaving. The narrow support piece between the tang and the main blade is called the shank, but this reference is often avoided because it can be confusing. The shank sometimes features decorations and the stamp of the country of origin. The top side and the underside of the shank can sometimes exhibit indentations known as fluting, or jimps for a more secure grip. The curved lower part of the main blade from the shank to the cutting edge is called the shoulder. The point where the shoulder joins the cutting edge is called the heel.
A thick strip of metal running transversely at the junction where the main blade attaches to the shank is called the stabiliser. The stabiliser can be double, single or can be absent in some razor models. The first stabiliser is usually very narrow and thicker and runs at the shank to blade junction, covering the shank and just spilling over to the shoulder. The second stabiliser can be distinguished since it is considerably wider and narrower, appearing after the first stabiliser and running lower into the shoulder.
The arched, non-cutting top of the blade is called the back or the spine while the cutting part of the blade opposite the back is called the cutting edge. Finally the other free end of the blade, at the opposite end of the tang, is called the point and, sometimes, the head or the nose.
There are usually two, but sometimes three, pins in the handle. The middle pin, if present, is plastic coated and is called the plug. Its function is to stabilise the sides of the handle so that they cannot be squeezed in the middle. When folded into the scales, the blade is protected from accidental damage, and the user is protected from accidental injury. During folding, the back of the blade, being thick and normally with a curved cross-section, acts as a natural stopper and prevents further rotation of the blade out of the handle from the other side. The frictional force between the scales and the tang applied about the pivot is called the Tension and it determines how freely the blade rotates about the point of rotation. A proper amount of tension should be present, for safety reasons, to ensure that the blade does not spin freely when opening or closing.
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