The application of acrylic brushes on different materials varies, which is mainly determined by the characteristics of acrylic pigments and the properties of the surfaces of different materials. The following are the specific differences when acrylic painting brushes are used on different materials:
1. Glass material
Feature: The glass surface is smooth and not prone to pigment adhesion.
Brush selection:
Natural or synthetic brush brushes: Oval, round and flat brushes can meet the needs of different details. Natural brushes are fine and soft, suitable for creating pictures with a natural luster and a three-dimensional effect. Synthetic brushes (such as nylon brushes) are durable and economical, making them suitable for regular painting tasks.
Usage tips:
Clean the surface: Before starting to paint, make sure the glass surface is clean, dust-free and grease-free.
Enhance adhesion: To increase the adhesion and durability of the coating, it may be necessary to use a glass-specific primer.
Layer-by-layer application: Acrylic paint dries quickly, allowing for layer-by-layer application of the paint to gradually add design details.
Protecting the work: After completing the painting, apply acrylic clear varnish to protect the work, enhancing its durability and water resistance.
2. Wall materials (such as cement walls, metal surfaces with linen and wool surfaces, stone walls, etc.)
Characteristics: These surfaces are rough and prone to absorbing water, which is conducive to the adhesion of acrylic pigments.
Brush selection:
A variety of brushes, such as oil brushes, painting knives, Chinese brushes, watercolor brushes, and board brushes, can all be used. Acrylic paint is more suitable for painting on these rough substrates.
Usage tips:
Direct drawing: Due to these rough surfaces, acrylic paint can be directly applied to form a strong and wear-resistant film.
Note: By taking advantage of the strong covering power of acrylic paint, it can be drawn layer by layer, which is convenient for adjustment and modification at any time.
3. Fine canvas or paper surface
Characteristics: These surfaces are fine and smooth, and have high requirements for the fineness of brushstrokes.
Brush selection:
Fine and soft brushes: such as soft wool brushes, they have a soft touch and moderate elasticity, making them suitable for drawing details on fine canvases or paper surfaces.
Usage tips:
Gentle drawing: As the surface is fine, the brush should be used gently when drawing to avoid leaving obvious brushstroke marks.
Control moisture: Acrylic paint can be diluted with water, but when painted on fine canvas or paper, the moisture content should be well controlled to prevent excessive diffusion of the paint.
4. Surface of plastic model
Characteristics: The surface of plastics is usually smooth and has a high requirement for the adhesion of pigments.
Brush selection:
Fine and soft brushes: such as soft wool brushes or synthetic wool brushes. Avoid using overly hard brushes to leave scratches on the plastic surface.
Usage tips:
Pre-treatment of the surface: Before painting, ensure that the plastic surface is clean and free of grease, and it may be necessary to sand it to increase adhesion.
Thin coating with multiple layers: The adhesion of acrylic paint on plastic surfaces is relatively weak. It is recommended to use the method of thin coating with multiple layers and gradually increase the thickness of the paint.
Avoid high temperatures: Acrylic paint may soften or fall off at high temperatures, so avoid high-temperature treatment after using acrylic paint on plastic models.
Overall suggestion
Understand the characteristics of pigments: Acrylic pigments dry quickly, have strong adhesion, and good water resistance, but adhesion may vary depending on the material.
Choose the right brush: Select the appropriate brush material and shape based on the painting material and the desired effect.
Master the usage skills: Different materials require different painting techniques, such as cleaning the surface, enhancing adhesion, and applying in layers, etc.
Pay attention to maintenance: Regularly clean and maintain the brush to prevent deformation or damage of the brush, which may affect the painting effect.
From the above analysis, it can be seen that the use of acrylic painting brushes on different materials varies. It is necessary to select the appropriate brush and usage techniques based on the specific material and the desired effect.