Precision CNC
Machining Plastics

From highly machinable Delrin and optical-grade acrylic, to extreme-temperature super-polymers like PEEK and Ultem. We strictly manage thermal expansion, internal stress, and coolant compatibility, leveraging advanced 5-axis technology to achieve flawless surface finishes and precise tolerances down to ±0.05mm.

POM (Acetal / Delrin) CNC Machining

POM (Acetal / Delrin)

Common Grades

POM-H (Delrin) / POM-C (Copolymer)

The machinist's dream plastic. Offers high stiffness, low friction, and exceptional dimensional stability. The benchmark material for precision gears and manifolds.

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PEEK CNC Machining

PEEK

Common Grades

Unfilled / GF30 / CF30 / Bearing Grade

The pinnacle of high-performance polymers. Withstands 250°C (482°F) continuous use. Extensively machined for aerospace structural components and medical implants.

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ABS CNC Machining

ABS

Common Grades

General Purpose / Flame Retardant / High-Heat

Highly machinable and impact-resistant. The most cost-effective thermoplastic for functional prototyping, electronic enclosures, and snap-fit assemblies.

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Acrylic (PMMA) CNC Machining

Acrylic (PMMA)

Common Grades

Extruded / Cast PMMA

Delivers an astonishing 92% light transmission. Expertly CNC milled and vapor-polished for microfluidic medical manifolds, light guides, and optical lenses.

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Polycarbonate (PC) CNC Machining

Polycarbonate (PC)

Common Grades

Lexan / Makrolon / PC-GF30

Features impact resistance 250 times greater than glass. The ultimate transparent choice for bullet-resistant sight glasses, machine guards, and high-pressure fluid manifolds.

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PEI (Ultem) CNC Machining

PEI (Ultem)

Common Grades

Ultem 1000 / Ultem 2100 / Ultem 2300

An advanced amorphous thermoplastic with a 170°C rating. Inherently flame retardant (UL94 V-0). The uncompromising standard for aerospace interiors and medical instruments.

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Nylon (PA) CNC Machining

Nylon (PA)

Common Grades

PA6 / PA66 / PA66-GF30

Renowned for its toughness and self-lubricating properties. Widely used to replace metal in heavy-duty power transmission gears, pulleys, and sliding wear pads.

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PTFE (Teflon) CNC Machining

PTFE (Teflon)

Common Grades

Virgin PTFE / Glass-Filled / Carbon-Filled

Provides the lowest coefficient of friction of any solid material. Absolutely chemically inert. Precision turned for high-performance seals, O-rings, and dry-running bearings.

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Polyethylene (PE) CNC Machining

Polyethylene (PE)

Common Grades

HDPE / UHMW-PE

Features extreme wear resistance and virtually zero moisture absorption. The undisputed choice for packaging conveyor star wheels, food processing guides, and marine wear strips.

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PET (Ertalyte) CNC Machining

PET (Ertalyte)

Common Grades

Unfilled PET / PET-TX (Lubricated)

Offers superior dimensional stability compared to Nylon due to its extremely low moisture absorption. FDA compliant for food and beverage processing machinery.

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Polypropylene (PP) CNC Machining

Polypropylene (PP)

Common Grades

Homopolymer / Copolymer

Highly versatile and lightweight (density < 1.0). Delivers extraordinary resistance to corrosive acids, making it essential for semiconductor wet benches and chemical valves.

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FR4 CNC Machining

FR4

Common Grades

FR4 (UL94 V-0)

A woven fiberglass and epoxy resin composite. Offers immense structural rigidity and ultimate dielectric strength. Expertly milled with PCD tooling for PCB test fixtures.

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G-10 CNC Machining

G-10

Common Grades

Garolite G-10 (Halogen-Free)

Structurally identical to FR4 but without the flame-retardant bromine additives. Maintains immense strength in deep-freeze cryogenic and extreme marine environments.

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PPSU CNC Machining

PPSU

Common Grades

Radel

An elite medical-grade plastic. Boasts virtually unbreakable impact strength and can withstand 1,000+ steam autoclave cycles without degrading. Ideal for surgical tools.

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PVC CNC Machining

PVC

Common Grades

Rigid PVC (Type 1) / CPVC

Highly cost-effective, rigid, and inherently flame retardant. CNC machined into complex fluid routing manifolds, electrical connector housings, and water treatment parts.

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End-to-End Solutions

Our Polymer Machining Capabilities

5-Axis CNC Milling

Process complex geometries in a single setup. Ideal for intricate PEEK aerospace brackets, medical enclosures, and multi-sided fluid routing manifolds.

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Precision CNC Turning

Utilizing high-speed lathes with positive-rake tooling to turn concentric PTFE seals, nylon gears, and Delrin bearings without distorting the material.

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Vapor Polishing & Annealing

Beyond thermal annealing to relieve internal stress, we offer vapor polishing to restore optical clarity on machined acrylic and polycarbonate components.

Explore Finishes
Material selection

Choose plastic by service condition, not colour

A useful polymer recommendation balances temperature, chemical exposure, load, moisture, electrical behavior and the tolerance that matters after machining. Start with the functional environment, then confirm the grade and stock form.

01

Environment

List sustained temperature, chemicals, sterilization and outdoor exposure. These conditions quickly eliminate otherwise familiar plastics.

02

Dimensional risk

Flag thin walls, long bores, press fits and moisture-sensitive features. Plastic expansion and stress relief need a different tolerance strategy from metal.

03

Release needs

Specify color, grade, filler, material certificate, cleaning and cosmetic requirements before production. Similar-sounding polymers are not always equivalent.

Get Your Answers

Plastic Machining FAQs

Do you perform thermal annealing on plastic parts?

Yes. We use thermal annealing for stress-sensitive plastics such as PEEK, Ultem, and polycarbonate to reduce warping, cracking, and dimensional drift during machining.

What are your standard tolerances for plastics?

For rigid plastics such as Delrin and PEEK we typically hold ±0.05mm. For softer or moisture-sensitive plastics such as UHMW, PTFE, and Nylon, we recommend ±0.1mm to ±0.15mm.

Can you restore optical clarity to clear plastics?

Yes. We use vapor polishing to restore transparency on machined acrylic and polycarbonate parts where optical clarity matters.

How do I choose the right plastic for my project?

Material choice depends on friction, heat, chemical exposure, impact, and transparency requirements. Our engineering team can recommend the right polymer grade during DFM review.

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Start Your Manufacturing RFQ

Upload your 3D CAD files today. Our engineers will review your material specifications, provide a free DFM report, and return an accurate quote within 24 hours.

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