8 Details to Pay Attention to Post processing of Prototype Processing

8 Details to Pay Attention to Post processing of Prototype Processing


Post-processing is a critical step in prototype processing that transforms raw prototypes into refined and functional end products. It involves a series of finishing techniques that enhance the appearance, strength, and overall quality of the prototypes. In this comprehensive blog post, we will delve into eight essential details that demand careful attention during post-processing to ensure the successful and efficient completion of prototype projects.

1. Surface Finishing

The surface finish of a prototype plays a significant role in its aesthetics and functionality. Depending on the desired outcome, post-processing methods such as sanding, polishing, or chemical treatments can be employed to achieve smooth and flawless surfaces. For visual prototypes, a high-quality surface finish is essential to create a visually appealing and market-ready product.

2. Removal of Support Structures

During 3D printing or CNC machining, support structures are often used to prevent overhangs and maintain structural integrity. However, these support structures are not part of the final design and need to be removed during post-processing. Careful and precise removal is crucial to avoid damaging the prototype and ensure that the final part retains its intended shape and dimensions.

3. Painting and Coloring

Painting and coloring are common post-processing techniques used to add the finishing touches to a prototype. This step allows for the incorporation of branding elements, visual cues, or realistic color representations. The choice of paint or coloring method depends on the prototype’s material and the desired appearance.

4. Assembly and Integration

For prototypes that consist of multiple components or parts, assembly and integration are vital stages in the post-processing phase. This involves carefully fitting and connecting different parts to create a complete and functional prototype. Proper assembly ensures that all components work seamlessly together, allowing for thorough testing and evaluation.

5. Mechanical Finishing

Mechanical finishing involves the use of tools such as files, drills, and taps to refine the prototype’s mechanical features. This step ensures that holes are accurately sized, threads are properly formed, and mating surfaces fit precisely. Mechanical finishing is essential for functional prototypes that require precise mechanical performance.

6. Inspection and Quality Control

Thorough inspection and quality control are indispensable in post-processing. Prototypes need to undergo rigorous checks to verify their dimensional accuracy, material integrity, and overall quality. Any deviations or defects found during inspection must be addressed promptly to ensure that the final product meets the required standards.

7. Surface Treatment

Surface treatment techniques, such as coating or plating, are employed to enhance the prototype’s durability, corrosion resistance, or electrical conductivity. Depending on the application and material, surface treatment can significantly improve the prototype’s performance and lifespan.

8. Documentation and Feedback

A comprehensive documentation process is essential in post-processing to track the progress of the prototype project, record changes and adjustments, and provide valuable insights for future iterations. Additionally, feedback from clients, designers, or testing teams plays a crucial role in refining the prototype and identifying areas for improvement.


Post-processing is a crucial stage in prototype processing that demands attention to detail and careful execution. By focusing on surface finishing, support structure removal, painting, assembly, mechanical finishing, inspection, surface treatment, and documentation, prototyping companies can ensure that the final prototypes meet the desired specifications and exceed customer expectations. A thorough and meticulous post-processing approach not only enhances the prototype’s appearance and functionality but also contributes to the overall success of the product development process.

  1. The prototype manufacturing process shall be consistent with the drawings to ensure that there is no error.
  2. The temperature of PC materials should be well controlled during oven or air duct drying, and should not be too high.
  3. The amount of glue should be controlled during the bonding of ABS and acrylic handboards to avoid cracking
  4. Handboards made of nylon, POM and aluminum alloy cannot be disassembled and processed by CNC generally due to unstable adhesive bonding
  5. When assembling the hand board, it should be aligned with the position, and should not be stuck to the wrong place, and there should be no dislocation and gap.
  6. The handmade model with R angle should be polished carefully, and the size should not be too small
  7. Attention shall be paid to deformation, shrinkage and bubble generation during the manual film covering
  8. Pay attention to the problems of color difference, paint cracking and paint peeling when spraying the prototype

The above are the details shared by V1 Prototype workers that are prone to problems in the prototype processing,

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