A reliable cnc plastic machining manufacturer provides high-precision, lightweight, and chemically stable components for industries such as electronics, medical devices, robotics, aerospace, and consumer products. Plastics behave very differently from metals, so high-quality plastic cnc machining services require optimized cutting tools, high spindle speeds, and strict heat-management control.
Using a professional cnc plastic machining manufacturer ensures accurate dimensions, excellent surface quality, and strong performance across small and large orders. Many projects benefit from plastic parts cnc machining, cnc plastic product machining, and small series plastic cnc machining for prototyping and engineering validation.
10 Common Plastics Used in CNC Plastic Machining manufacturer
Below are the ten most frequently machined plastics with extended details, formulas, characteristics, and applications.
1.ABS (Acrylonitrile Butadiene Styrene)
Formula: (C₈H₈•C₄H₆•C₃H₃N)_n
ABS offers good machinability, high impact strength, and stable dimensional performance.
Extra Info: Its glass transition temperature is about 105°C. Resistant to weak acids and alkalis.
Applications: electronic housings, structural brackets, functional prototypes, automotive interior parts.
2.PC (Polycarbonate)
Formula: C₁₆H₁₄O₃
PC provides exceptional impact resistance and optical clarity.
Extra Info: Continuous use temperature ~115°C; sensitive to scratches; good electrical insulation.
Applications: lenses, medical guards, transparent covers, machine safety shields.
3.POM / Delrin (Polyoxymethylene)
Formula: (CH₂O)_n
Known for stiffness, low friction, excellent wear properties, and high accuracy.
Extra Info: Very low moisture absorption; melting point ~175°C; ideal for gear mechanisms.
Applications: gears, bearings, valves, pulleys, mechanical moving parts.
4.Nylon (PA6 / PA66)
Formula: (C₆H₁₁NO)_n
High strength, good toughness, and excellent wear resistance.
Extra Info: Absorbs moisture up to 3–7%; becomes more flexible in humid environments.
Applications: bushings, rollers, sprockets, industrial machinery components.
5.PP (Polypropylene)
Formula: (C₃H₆)_n
Lightweight with outstanding chemical resistance.
Extra Info: Resistant to acids, bases, solvents; melting point ~160°C; flexible and fatigue-resistant.
Applications: lab components, chemical containers, fluid-system parts.
6.PE – HDPE / UHMWPE（Polyethylene）
Formula: (C₂H₄)_n
Low friction, high impact strength, excellent wear resistance.
Extra Info: UHMWPE has extremely high molecular weight (3–6 million g/mol).
Applications: sliding plates, medical devices, wear strips, impact-resistant panels.
7. PTFE (Polytetrafluoroethylene)
Formula: (C₂F₄)_n
Exceptional chemical resistance and one of the lowest friction coefficients of any solid.
Extra Info: Operates continuously up to 260°C; inert to almost all chemicals.
Applications: seals, gaskets, insulators, chemical-processing components.
8. PEEK (Polyether Ether Ketone)
Formula: C₁₉H₁₂O₃
High mechanical strength, excellent thermal endurance, and superb chemical stability.
Extra Info: Service temperature up to 250°C; flame-resistant; sterilizable for medical use.
Applications: aerospace fasteners, medical implants, high-temperature machinery.
9. PMMA (Acrylic)
Formula: (C₅O₂H₈)_n
Crystal-clear transparency with excellent UV resistance.
Extra Info: Better clarity than glass; lower impact resistance than PC; ideal for precision optical surfaces.
Applications: displays, light diffusers, instrument panels, decorative parts.
10. PVC (Polyvinyl Chloride)
Formula: (C₂H₃Cl)_n
Strong, flame-retardant, and chemically stable.
Extra Info: Good hardness; excellent resistance to acids and bases; available in rigid and flexible versions.
Applications: fluid-handling parts, valves, fittings, industrial components.
Why Plastics Require Specialized CNC Machining
Plastics soften under heat, expand during cutting, and can generate long, stringy chips.
A skilled cnc plastic machining manufacturer adjusts spindle speeds, coolant control, tool coatings, and chip-evacuation methods to prevent melting or deformation.
This ensures reliable results for plastic parts cnc machining and cnc plastic product machining, especially for thin-wall or micro-tolerance components.
Applications Across Multiple Industries
Medical: PEEK, PC, POM for surgical devices, housings, bearings.
Electronics: ABS and PC for enclosures, insulating parts, connectors.
Automotive: Nylon and PEEK for gears, clips, brackets, and interior parts.
Robotics: UHMWPE and POM for sliding, guiding, and precision motion components.
Aerospace: High-performance PEEK for lightweight, high-temperature parts.
Consumer Products: PMMA and ABS for covers, knobs, shells, and transparent components.
Small series plastic cnc machining is especially useful for testing new designs before mass production.
Capabilities of CNC Plastic Machining Manufacturer
Modern cnc machining centers plastics support high-speed milling up to 40,000 rpm, complex contouring, multi-axis machining, micro-features, and precision turning.
These machines allow manufacturers to create complex geometries while maintaining clean edges and tight tolerances.
Size Capability
Machinable Size Range
Maximum Machinable Size (Single Piece)
CNC Sheet Milling (3-axis / 4-axis):
1500 × 1000 × 1000 mm
CNC Turning (Lathe Diameter):
Ø 5 mm – Ø 400 mm
Long Shaft Parts:
Maximum 600 mm (depending on material rigidity)
Most Commonly Machined Size Range
10–300 mm Small to Medium-Sized Plastic Parts
Suitable for electronic components, medical components, mechanical components, jigs, fixtures, etc.
Micro Parts
Some high-hardness plastics (POM, PEEK) can be machined to:
Minimum Wall Thickness: 0.5–0.8 mm (depending on material)
Minimum Hole Diameter: 0.8–1.0 mm
Machining Accuracy
The accuracy of plastics is affected by temperature, material moisture absorption, and toughness; therefore, different materials have different accuracy grades. The following are the achievable accuracy ranges:
CNC Milling Accuracy
±0.02 mm (Conventional plastics)
±0.01 mm (Materials with high dimensional stability such as POM and PEEK)
Machining Accuracy
CNC Turning Accuracy
±0.02 mm standard
Up to ±0.01 mm (for medical-grade parts)
Hole Diameter Accuracy
Typically H7–H10 range
Finishing up to ±0.015 mm
Tolerance Capability
Depending on material grade, the following tolerances are available:
±0.01 mm to ±0.05 mm
Minimum Wall Thickness
Plastic wall thickness is more limited than metal
Conventional wall thickness: 1.2–2.0 mm
Excellent materials (POM, PC, PEEK): Up to 0.8–1.0 mm mm
Transparent Materials (PMMA, PC): Recommended ≥1.5 mm
Surface Finishing Capability
Plastic surfaces can be optimized through the following methods:
Polishing (optical grade for transparent parts)
Deburring (manual + roller method)
Sandblasting (suitable for POM, PEEK, ABS, PA)
Laser engraving
Screen printing / Pad printing
Mass Production Capability
Suitable for:
Small batch prototyping (1–50 pcs)
Medium batch pilot production (50–500 pcs)
Mass production (500–10,000+ pcs)
Smooth transition from sample → small batch → mass production is achieved through small series plastic CNC machining.
Why Choose Weldo as Your CNC Plastic Machining Manufacturer
Weldo provides advanced plastic cnc machining services using ABS, PC, POM, Nylon, PP, PE, PTFE, PEEK, PMMA, PVC, and many others.
We support small series plastic cnc machining, full-scale production, rapid prototyping, and component customization.
As a professional cnc plastic machining manufacturer, Weldo ensures excellent precision, stable quality, and fast lead times through strict quality control and engineering support.
Conclusion of CNC plastic machining manufacturer
A professional cnc plastic machining manufacturer ensures high-performance, precise, and reliable plastic components across all industries.
Understanding each plastic’s formula, temperature tolerance, chemical behavior, and application helps engineers select the best material.
With strong capabilities in plastic parts cnc machining, cnc plastic product machining, and plastic cnc machining services, manufacturers can meet any project requirement from small batches to large orders.
For accurate quotes, engineering support, and consistent quality, Weldo is ready to help with your CNC plastic machining needs.
FAQ of cnc machining plastic manufacturer
Which plastics are best for high-strength applications?
PEEK, Nylon, and POM provide excellent mechanical performance and dimensional stability.
Do plastics deform during machining?
Yes. Heat and friction may cause melting. Skilled factories optimize cutting parameters to prevent deformation.
Can I order small-batch plastic machining for prototypes?
Yes. Weldo offers small series plastic cnc machining for rapid development and testing.
Are plastic materials chemically resistant?
Many plastics such as PTFE, PP, and PVC offer excellent chemical resistance, ideal for fluid and laboratory environments.
