When choosing an oil brush, the thickness of the brush can be judged from the following aspects:
First, observe the length and density of the bristles
Bristle length: Generally, the longer the bristles, the softer and smoother the brushstrokes of the brush, making it suitable for drawing large backgrounds or creating delicate color transitions. On the contrary, brushes with shorter bristles are more suitable for depicting details or performing precise outlining.
Bristle density: The density of the bristles determines the ink storage capacity and coverage ability of the brush. Brushes with higher density can carry more pigments and are suitable for thick coating or large-scale coloring. While brushes with lower density are more suitable for thin painting or fine depiction.
Second, check the model identification of the paintbrush
Oil painting brushes usually have clear model markings, such as No. 0, No. 1, No. 2, etc. The smaller the number, the finer the brush. The larger the number, the thicker the brush. This marking method helps painters quickly choose the brushes that suit their needs.
Third, try the brush to feel the brushstrokes
If conditions permit, you can try using brushes of different thicknesses to experience their performance in actual painting. Through actual painting, one can have a more intuitive understanding of the influence of the thickness of the brush on aspects such as brushstrokes and color expression. For instance, a fine brush can draw delicate lines and details, while a coarse brush can create bold brushstrokes and rich color gradations.
Fourth, consider the painting requirements and style
When choosing an oil brush, it is also necessary to make a selection based on your own painting needs and style. For example, for realistic style painters, it might be necessary to prepare a series of brushes of different thicknesses in order to carry out fine depiction or large-scale coloring as needed during the painting process. For expressionist or abstract style painters, they may pay more attention to the brushstroke effect and expressiveness of the brush, and the requirements for the thickness of the brush may be relatively less strict.
In summary, by observing the length and density of the bristles, checking the model identification of the brush, trying out the brush to feel the brushstrokes, and considering the painting requirements and style, one can relatively accurately determine the thickness of an oil painting brush. When making a choice, it is recommended to make a comprehensive consideration based on your own painting needs and style, and select the brush that best suits you.