Gradation is a type of shading, you simply press harder and harder on the surface to forma sort of scale of shades.
The grade of pencil that is easiest to erase is typically a harder pencil, such as an H or F grade.
Yes, a 3B pencil is darker than a 2B pencil. The higher the number in the pencil grade, the softer the graphite and therefore the darker the mark it will make on paper.
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Use a B, 2B, or darker grade of pencil for your shading. H and 2h pencils will give you less depth.
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Oh, dude, the number 621 on a Nataraj pencil is just the manufacturer's way of telling you the pencil's hardness level. In this case, it means the pencil is a bit on the harder side, like when you try to erase a mistake but end up just smudging it more. So, like, next time you see 621 on a pencil, you'll know it's not a secret code or anything, just a subtle hint about its graphite density.
Pencil lead, also known as graphite, is typically 0.2 millimeters to 1 millimeter thick, depending on the grade of the pencil. The standard size for most mechanical pencils and fine-tip mechanical pencils is 0.5 millimeters.
When writing with a pencil, you are performing a form of a hardness test rather than a streak test. The hardness of the pencil's graphite core determines how dark or light the line appears on paper, which relates to the pencil's grade (e.g., H for hard, B for black). A streak test, on the other hand, involves rubbing a mineral across a surface to observe the color of its powder, which is not applicable to writing with a pencil. Therefore, pencil writing primarily assesses the hardness of the graphite.
A pencil box is incredibly useful for students. It is particularly useful for students who study art and may own a large number of different grade pencils, as well as different colored pencils. A pencil box is also useful for students who do not study art. A pencil box helps to keeps a student's workspace neat and tidy, as well as providing a storage location for their stationary.
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