What finishes can be done on rapid prototype parts?

Rapid prototyping technologies such as 3D printing, CNC machining, laser cutting and injection molding can produce parts with different surface finishes depending on the manufacturing method and materials used. Some of the most common surface finishes that can be made on parts manufactured using rapid prototyping technologies are described below:

• Natural finish: This is the most basic finish and refers to the surface of the part as it is produced after the manufacturing process. This finish is typically rough and may have coatings marks, support lines and other fabrication details that are removed in more advanced finishes.
• Sanding: Sanding is a process that involves the manual removal of surface marks and roughness from the part by the use of sandpaper or sanding tools. The end result is a smoother, more uniform surface.
• Polishing: Polishing is similar to sanding, but involves a more advanced process that uses polishing tools and abrasive compounds to produce an extremely smooth and shiny surface. This finish is common on parts that require an attractive aesthetic appearance, ranging from a very fine matte finish to a mirror polish. This technique is used for the manufacture of transparent parts.
• Blasting: This is a finishing process that uses compressed air and abrasive material to remove marks and roughness from the surface of the part. This process can produce a uniform, matte surface, similar to the finish of die casting.
• Painting: Paint finishing involves the application of a coat of paint on the surface of the part to improve the aesthetic appearance and durability. This finish is common on parts used in consumer and design applications.
• Anodizing: Anodizing is an electrochemical coating process commonly used on aluminum parts to improve corrosion resistance and aesthetic appearance. This process produces a layer of aluminum oxide on the surface of the part.

In short, there are many different surface finishes that can be made on parts manufactured using rapid prototyping technologies. Each finish has its own advantages and disadvantages, and the choice will depend on the type of part being manufactured and its intended function. It is important to choose the right finish to ensure that the part has the desired appearance and durability.

From Protospain we can give you the necessary advice to choose the most suitable surface finish for the use you are going to give to the prototype. Do not hesitate to contact us for further information.