Quality Appearance Prototype Manufacturing
  • Quality Appearance Prototype Manufacturing
  • Project Overview:

    Prototype Manufacturing Process: CNC Machining
    Prototyping Material: Clear PMMA (acrylic), ABS
    Surface Finishing: Sanding, Mirror Polishing, Painting, Silk-screening, UV Coating
    Quantity: 50 Units
    Lead Time: 15 Days

    This intelligent product was developed by a famous top brand internet company in China to improve the driving experience and safety by recording the automobile’s entire driving information and alarming in case of the emergency or error. The customer had very high expectations for the prototypes and wanted the prototypes not only performed as intended but also must looked as expected, thus the surface finishing became the key point for this project, and had to pay extremely high attention to each finishing detail to meet the appearance quality.




Project Challenge:

Surface finishing quality was the key challenge for this project as the prototypes were expected to not only work but also look as intended. Considering the different types of surface finishing processes applied for the prototype, it required the excellent surface finishing capability and the strong attention to every detail.


CNC Prototyping:

CNC machining the top and bottom cover parts made of clear acrylic (PMMA). To get close tolerance and smooth machined surface that helped reduce the hand sanding and mirror polishing time, the parts were machined as fine as possible. In addition, the cutting feed and speed for acrylic machining was different from the other common plastics for its material properties of high brittleness.

CNC acrylic machining





CNC machined PMMA parts
CNC machined ABS parts






CNC machined and polished PMMA cover parts. The surface finishing used for this two cover parts: sanding, mirror polishing, silk-screening and UV Coating, each finishing process directly influenced the prototype's final appearance quality.
CNC ABS milled and assembled middle frame parts. The middle frame consisted of two small pieces and were sanded, matte colors painted and silk-screened. The PCB and other electronic components were placed inside the middle frame.





Quality appearance model
Quality visual prototype






The final finished prototypes. The customer tested the prototypes and it performed as intended also looked as expected, then said to us: "It is really appreciated for the visual quality you achieved and it is nearly what we exactly desired. Thank you all for the big efforts and support!".
The majority of exported prototypes made in China were functional ones for mechanism verification, some visual prototypes were made and delivered without the surface finishing done even just the simple painting. At Honkia, we could also make quality appearance prototypes that was proved by customers worldwide.

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