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®)
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
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
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)
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)
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)
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)
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™)
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)
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®)
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)
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
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
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
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
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.
View Specs & CapabilitiesOur 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.
Learn MillingPrecision CNC Turning
Utilizing high-speed lathes with razor-sharp positive-rake tooling to turn highly concentric Teflon seals, Nylon gears, and Delrin bearings without melting the material.
Learn TurningVapor Polishing & Annealing
Beyond strict thermal annealing to relieve internal stress, we offer advanced chemical vapor polishing to restore 100% optical clarity to machined Acrylic (PMMA) and Polycarbonate components.
Explore FinishesPlastic Machining FAQs
Do you perform thermal annealing on plastic parts?
Yes. Extruded plastic billets, especially high-performance polymers like PEEK, Ultem, and Polycarbonate, contain high internal stress. We perform strict oven annealing cycles before and during machining to relieve this stress, preventing the parts from warping or cracking (crazing) after delivery.
What are your standard tolerances for plastics?
Plastics have a much higher coefficient of thermal expansion than metals. For rigid plastics like Delrin and PEEK, we can typically hold ±0.05mm. However, for softer plastics like UHMW, PTFE, and Nylon (which absorbs moisture), we recommend designing with a standard tolerance of ±0.1mm to ±0.15mm.
Can you restore optical clarity to clear plastics?
Absolutely. CNC machining leaves a frosted surface on clear materials. We utilize chemical vapor polishing to instantly melt the microscopic tooling marks on Acrylic (PMMA) and Polycarbonate (PC), restoring internal fluid channels and complex external geometries to pristine, glass-like clarity.
How do I choose the right plastic for my project?
It depends on your operating environment. For low friction, choose Delrin or PTFE. For extreme heat and strength, select PEEK or Ultem. For unbreakable transparency, opt for Polycarbonate. Our engineering team provides free DFM (Design for Manufacturability) consulting to help you select the optimal polymer grade.
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.