F-tip is thin and ef is ultra-thin.

The nib can be said to be the most critical part of the pen, with various changes from fine to thick. Generally, the most common pen tip sizes are "B (width), M (medium), FM (fine-medium), F (fine), EF (extra fine)", etc. B is from coarse to fine. M & gtF & gtEF，

2, pen tip size difference

The size of the nib will be slightly different from one pen factory to another in terms of specifications. Under the same size unit, the Japanese pen will be thinner than the European pen.

According to the usual writing habits, westerners usually use the M-tip as the main pen and choose the B-tip when signing. Due to the complexity of Chinese writing strokes, F or thinner EF pen tips can generally be used.

The width of EF=XF=Extra Fine pen tip is about 0.24 mm ~ 0.28 mm

F = the width of the fine pen tip is about 0.28 mm ~ 0.34 mm

M = M = medium pen tip width: 0.34 mm ~ 0.44 mm

B = width B = wide nib: 0.44 mm ~ 0.54 mm

BB = The width of the double-wide nib is about 0.66 mm ~ 0.86 mm.

Extended data

Type of nib

Standardized form

Standard type: usually including thin, medium and wide type. Many companies have more choices. The selection range can be from the tip size

Into a shovel three times as wide. Generally speaking, yes; People with light hands or small handwriting choose a thin nib. People with heavy writing hands choose a wider nib. However, the choice of nib still depends on your preference. However, the ultra-fine nib is generally only suitable for digital works, not for ordinary writing.

Italic prompt

Italic tip: The inclined nib has a sharp horizontal edge, which is different from the standard spherical shape. So the lines of the words are thicker at the vertical pen. The width of the italic pen tip varies greatly. The wider the pen tip, the more obvious the difference between stroke thickness. The horizontal edge of the italic pen tip is easy to scrape paper, so pay more attention when writing. When writing, the italic pen tip should make a 45-degree angle with the paper to prevent the font from being written as a square.

Deflector

Italic: the tangent line on the left side of the oblique pen tip forms an angle of 15 degrees, which is suitable for many people with a certain angle when holding the pen. Holding the pen like that will put more pressure on one side of the pen tip, resulting in irregular ink flow. Oblique nib also has various models from thin to thick to choose from, and the stroke thickness of oblique nib is not as exaggerated as that of oblique nib.

Anticline type

Anti-oblique type: the shape of anti-oblique nib is just the opposite of oblique nib, which is generally used by left-handed writers.

Oblique italic

Oblique graphics: This pen is suitable for people who want to master the general principles of italic writing, but don't want to work too hard. With this pen tip, you can follow the italic style more casually and write more beautiful words. There are usually two kinds of italics and italics: one is 15 degree, which is suitable for right-handed people to write, and the other is 30 degree, which is suitable for left-handed people to write.

References:

Baidu encyclopedia-pen nib

Baidu encyclopedia-pen