CNC Polystyrene Machining Service
CNC Machining for Polystyrene (PS) Part
We’ve been machining polystyrene (PS) for years, making everything from prototypes to custom parts for real projects. PS can be tricky—thin walls, delicate features, and complex shapes—but we know how to handle it. With the right tools and careful CNC setups, every part comes out clean, accurate, and ready to use.
Our CNC PS parts go into electronics (like housings and insulation mounts), display and signage (transparent panels and fixtures), consumer goods (lightweight structural pieces), and educational models. From the first design optimization to the finished part, we make sure everything works as expected and stays on budget.
PS CNC Machining Capabilities & Options
The following CNC PS machining capabilities options are provided as a general reference and can be customized according to part requirements.
| Parameter | Recommended Range |
|---|---|
| Max Part Size | 800×500×300 mm |
| Color Options | Clear/Pantone / Sample / Custom colors |
| Surface Finishes | As-machined / Polished / Painted |
| Tolerances | ±0.10–0.15 mm |
| Cost | ⭐⭐⭐☆☆ |
PS CNC Machining Parts Process
At Jiangzhi, our polystyrene CNC machining technology uses advanced equipment for precise cutting, milling, and shaping, ensuring exceptional dimensional accuracy and smooth surface finishes. We offer two popular machining methods:
Polystyrene CNC Milling
Polystyrene CNC Turning
Polystyrene Machining Plastic Properties
Polystyrene (PS) CNC machining is valued for its clean machinability, dimensional stability, and affordability. While more brittle than some engineering plastics, PS performs well under the right fixturing and delivers reliable results for precise, lightweight components.
- GPPS – A transparent, rigid plastic with high stiffness and easy molding, but brittle and low impact resistance, used for food containers, clear boxes, and stationery.
- HIPS – An opaque, smooth-surfaced plastic with improved toughness and impact resistance but low transparency, used for refrigerator linings, TV housings, and toys.
- EPS – A lightweight white foam with good insulation and cushioning, but low strength and solvent-sensitive, used for packaging, disposable food containers, and building insulation panels.
| Tensile Strength, Yield (MPa) | Elongation at Break | Hardness | Impact Strength | Heat Deflection | Heat Deflection Temperature | Melting Point |
|---|---|---|---|---|---|---|
| 35–55 MPa | 1–3% | R110–R120 | 10–30 J/m | 90–100°C | 80–90°C | No true melting point; softens at about100°C |
- The above parameters represent the baseline performance of the materials. Actual application should be dynamically optimized based on specific working conditions.
Related Process
Want Clear, Lightweight CNC Polystyrene Parts?
Advantages & Application of CNC Polystyrene
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Advantages of PS CNC Machining
- Excellent chemical resistance – withstands corrosive chemicals and solvents.
- Low friction and non-stick surface – ideal for sliding or sealing components.
- High thermal stability – suitable for a wide temperature range.
- Good machinability – machines cleanly with precision.
- Electrical insulation – great for electronic components.
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Polystyrene Machining Parts Application
- Electronics Industry – Insulating parts, electronic prototypes, small housings.
- Automotive Industry – Prototype panels, interior components, mock-up parts.
- Construction & Architecture – Scale/architectural models, decorative panels.
- Advertising & Signage – Signboards, 3D letters, display props.
- Education & Design – Student models, DIY projects, small custom pieces.
Common PS CNC Parts Surface Treatment
Mechanical or flame/chemical polishing is suitable for visible housings or display panels, providing a smooth and glossy surface that enhances visual appeal. Note that polished PS surfaces are brittle and prone to cracking, so gentle handling is required during machining, transportation, and assembly.
Laser engraving or marking is suitable for logos, part numbers, or decorative patterns. Low-power settings are recommended to prevent charring or cracking of the brittle PS surface.
For panels, handles, or components requiring a matte or textured finish, light sandblasting can hide machining marks and improve grip. The intensity should be carefully controlled to avoid cracking or surface damage.
CNC PS components can be bonded using compatible adhesives or solvent welding for functional assemblies. Proper handling is essential to avoid stress cracks at joints.
CNC PS parts can be painted or coated to change color or add protection. Applying a plastic primer first is recommended to improve adhesion and reduce the risk of cracking or peeling. UV-resistant coatings are advised for outdoor components.
Jiangzhi PS CNC Machining Parts Are Guaranteed
FAQs About CNC Polystyrene Machining
Yes, PS machining is effective for lightweight, low-cost parts with good dimensional accuracy.
GPPS offers better clarity, while HIPS adds impact resistance. We machine both based on your needs.
Yes, with proper fixturing, we can produce intricate details and thin features in polystyrene.
Yes. We follow strict safety and ventilation protocols, especially when machining high-speed.
Absolutely. Our engineers offer DFM (Design for Machining) feedback to help optimize your part.



