Core Capabilities
Our High Gloss Vacuum Casting achieves the optimal balance between *injection-molding-like quality* and *fast delivery*:
Ultra-low surface roughness -
Ra < 0.05 μm (SPI A-1 grade), delivering a true mirror-like high-gloss effect far superior to standard vacuum casting
01
Reliable dimensional accuracy -
Tolerance controlled within ±0.1 mm/100 mm, meeting fine assembly requirements
02
Rapid lead times -
Samples produced in as fast as 24 hours for simple single-cavity parts; standard turnaround 3–5 business days
03
Small-batch cost advantage -
No hard tooling required; 10–200 piece production cost is significantly lower than injection molding - ideal for bridge production and market validation
04
Optical-grade transparency -
High-purity transparent PU resin combined with vacuum degassing achieves high light transmittance and low haze, suitable for optical and visual verification
05
High Gloss Technical Process
We achieve optical-grade vacuum casting and high-polish prototypes through the following technical approach:
Master model polishing - The master is polished to SPI A-1 grade using 6,000-grit diamond buff; the silicone mold faithfully replicates the mirror finish
High-purity transparent PU resin - Specially formulated resin designed for maximum optical clarity; precisely metered and mixed
Vacuum degassing process - Casting performed under high vacuum (< 10 mbar absolute), effectively eliminating micro-bubbles, maximizing transparency, and eliminating internal defects
The result is a transparent component with a glass-smooth exterior and optically clear interior - light transmittance approaching that of real PMMA/PC, suitable for applications demanding the highest visual quality.
Material Selection Guide
We offer a range of high-performance polyurethane resins to meet diverse mechanical, optical, and thermal requirements:
|
Material |
Simulates |
Tensile Strength (MPa) |
Heat Deflection Temp (°C) |
Light Transmission (%) |
Hardness (Shore D) |
Typical Applications |
|
**Hei-Cast 8150** |
ABS-like |
45–60 |
55–70 |
Opaque / Translucent |
78–82 |
Functional durable prototypes |
|
**AXSON PX-5210 / UPX 5210** |
PMMA / PC-like |
55–70 |
60–75 |
> 90 (water-clear) |
80–85 |
Optical-grade clear plastic castings |
|
**High-Temp Transparent PU** |
PC-like (heat-resistant) |
50–65 |
85–110 |
> 85 |
80–86 |
Heat-resistant transparent parts |
|
**Flexible Transparent PU** |
TPU-like |
15–30 |
40–60 |
> 80 |
40–60 (Shore A) |
Soft-touch clear covers, flexible lenses |
Selection guidance: Choose AXSON PX-5210 when maximum optical transparency and ease of polishing are required. Select high-temperature transparent formulas when greater heat resistance is needed. We recommend the optimal material based on your specific functional requirements.
Surface Treatment Options
High Gloss Vacuum Casting parts can be further enhanced through post-processing:
|
Treatment |
Benefit |
|
**Hand Polishing** |
Additional mirror polishing applied post-casting to further reduce Ra value |
|
**UV Coating** |
Enhances surface hardness and scratch resistance; protects transparent parts from UV-induced yellowing |
|
**PVD Electroplating** |
Achieves metallic texture or mirror effect on high-gloss substrate |
|
**Spray Painting** |
Precisely matches Pantone/RAL colors; supports semi-transparent or gradient effects |
We specialize in high-polish prototype post-processing and offer complete surface solutions ranging from pure optical transparency to fully customized appearance finishes.
Defect Control & Quality Assurance
Common vacuum casting challenges - bubbles, shrinkage, incomplete cure, and surface hazing - are controlled through strict measures:
Bubble control -
High-vacuum degassing (< 10 mbar absolute) + optimized pour speed and gate path design
Shrinkage management -
Precise resin ratio control, mold preheat temperature, and curing curve optimization; linear shrinkage rate controlled within 0.3%
Cure integrity -
Strict mold temperature (above 60 °C) and post-curing protocol to ensure complete material reaction
Surface haze prevention -
High-purity resin, clean operating environment, and SPI A-1 mold polishing combined to deliver reliable mirror replication
Every batch undergoes visual inspection, dimensional measurement, and transmittance testing, with a complete quality report provided to establish customer confidence.
Application Scenarios
|
Application |
Details |
|
**Automotive Lampshades & Optical Components** |
Mirror-grade gloss surface prototypes for light distribution verification, closely simulating final injection-molded performance |
|
**Medical Device Panels** |
Optically clear panels with high transparency and medical-grade cleanliness; support color coding and visual inspection |
|
**Consumer Electronics Enclosures** |
High-end headphones, phone cases, and display component prototypes with crystal-clear appearance and precise assembly fit |
|
**Luxury Perfume Bottles & Packaging** |
Optical-grade transparent bottle prototypes with high gloss and complex geometry for rapid design aesthetics validation |
|
**Other Applications** |
Instrument windows, light guides, display models, and any transparent or semi-transparent part requiring high visual quality |
FAQ
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