Painting and Coloring
1、 Spray painting
Spray painting is currently the main coloring process for 3D printed parts. Spray painting refers to using a spray gun to evenly spray artificial paint made from nitrocellulose, resin, pigments, solvents, etc. onto the surface of an object. There are also spray cans that can be directly sprayed onto the surface of 3D printed parts without the need for a spray gun.
Spray cans are mostly oil-based paints with high adhesion, a wide range of applications, and excellent color glossiness. But the color is relatively single, and due to factors such as spraying technology and paint dryness, multi-color spraying is more difficult.
After spraying, it is necessary to air dry and fine tune the details, so spraying takes 3 to 4 hours. In terms of product effect, it is also influenced by various factors such as manual proficiency, mastery of secondary coloring, and spray point connection, with strong technical requirements. In terms of color glossiness, influenced by the original mirror surface of the product, glossiness is second only to electroplating and nano spray coating effects.
Spray painting and coloring are cost-effective and widely applicable, often combined with hand drawing for the same work.
2.Electroplate
Electroplating is the process of using the principle of electrolysis to deposit a thin layer of other metals or alloys on certain metal surfaces. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts, thereby preventing metal oxidation (such as rust), improving wear resistance, conductivity, reflectivity, corrosion resistance (such as copper sulfate), and enhancing aesthetics.
Electroplating has fewer colors, but its high gloss color mirror and excellent appearance cannot be achieved by pure manual labor, painting, and immersion dyeing.
3.Immersion dyeing
Mostly used for coloring nylon materials. The cost of production is higher than that of pure manual coloring and painting processes. Generally, it is monochrome, and the color can be selected and prepared according to the needs. The final product presents a relatively dull color and low glossiness, which can achieve simultaneous coloring in small batches.
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