More Details
Project Background
The customer was preparing to launch a new soy milk maker. The engineering was complete, and the function was stable. However, the prototype still looked like a test sample rather than a finished product.
They needed a prototype that looked like a real product on a kitchen counter, not a lab model. The project had a tight timeline, and the customer needed confidence in the prototype’s appearance before committing to molds for mass production.
Customer’s Real Challenge
The real risks were clear:
- Users judge a product in seconds
- Dealers reject products that look cheap
- Tooling decisions were coming too early
They needed confidence before investing in molds.
Rapid Prototyping Solution
Plastic Prototype Manufacturing
The housing was produced using ABS plastic for:
- Structural stability
- Smooth surface preparation
- High paint compatibility
Wall thickness and parting lines were adjusted early to support surface quality.
Surface Painting Process
A production-style spray painting process was applied:
- Surface sanding and cleaning
- Primer coating for adhesion
- Color coating for uniform appearance
- Matte topcoat for tactile quality
The result was a finished prototype that looked and felt like a real product, ready for consumer and dealer feedback.
Results
After receiving the prototype:
- Internal reviews became decisive
- Dealer feedback improved
- User testing felt realistic
- Tooling approval moved forward
The structure and function of the product did not change—only the surface was refined.
Key Takeaways
1️⃣Functional prototypes are not enough
2️⃣Appearance affects acceptance
3️⃣Surface treatment is part of engineering
4️⃣Rapid prototyping should reflect the final product experience
Technical Specifications
| Parameter | Value |
|---|---|
| Material | ABS engineering plastic |
| Prototype Process | Plastic prototyping |
| Surface Finish | Multi-layer spray painting |
| Texture | Matte, fingerprint-resistant |
| Purpose | Appearance and user perception validation |
| Lead Time | 7–10 days |
Application Scenarios
▶️Soy milk makers
▶️Blenders
▶️Small kitchen appliances
▶️Dealer demos
▶️Pre-launch evaluations
Why This Case Matters
In small kitchen appliances: Color builds trust | Surface defines quality | Touch influences price perception
A painted plastic prototype allows these factors to be tested early—before tooling costs are locked in.
Production Process & Quality Control
- DFM Review: Surface and paint feasibility reviewed before prototyping.
- Rapid Prototyping: Plastic parts prepared and finished within days.
- Paint Inspection: Color, texture, and consistency checked under real lighting conditions.
- Quality Assurance: Rework support provided if surface quality does not meet requirements.
