COMCO Plastics specializes in precision CNC milling and turning, utilizing advanced multi-axis computer-controlled machines to produce complex prismatic and cylindrical plastic parts with tight tolerances and superior surface finishes. Their expertise includes 3-axis to 5-axis milling and live tooling turning, supporting high-volume and prototype production with consistent quality.

Machining encompasses a variety of manufacturing processes aimed at shaping and removing material from a workpiece. This includes both computer-controlled processes, such as CNC milling, turning, and routing, as well as non-traditional methods like Electrochemical, Chemical, and Photochemical Machining.

CNC Machining

CNC Milling removes material with rotating cutters under precise multi-axis computer control, producing complex prismatic or sculpted parts with positional accuracy to ±0.005 mm and surface finishes ≤ Ra 0.4 µm. Machines span 3-axis vertical mills, 4-axis horizontals with pallet changers, and full 5-axis trunnion or gantry platforms, supporting everything from rapid prototypes to lights-out production in metals, plastics, and composites.

CNC Milling

CNC Turning uses computer-controlled lathes to rotate bar, billet, or cast blanks while single-point cutting tools remove material. The process excels at producing concentric OD/ID features, tapers, threads, grooves, and complex contours with tight positional accuracy. Modern CNC lathes support live tooling, Y-axis interpolation, sub-spindle part transfer, and bar-feed automation—enabling complete, high-volume production of precision cylindrical components in metals or plastics.

CNC Turning

CNC Mill-Turn Machining combines multi-axis turning and milling in a single setup. Workpieces are clamped once and processed on opposed spindles with live tooling, Y-axis milling, and simultaneous interpolation up to 9 axes. This eliminates part re-clamping, improves concentricity between turned and milled features, and compresses overall cycle time for complex prismatic-plus-cylindrical components used in aerospace, medical, and high-mix/low-volume production.

CNC Mill-Turn Machining

Swiss Machining is a high-precision CNC machining process designed for producing small, complex parts with tight tolerances. It is typically performed on Swiss-type lathes, which utilize a sliding headstock and a guide bushing to minimize deflection and enhance precision during various machining operations, including turning, milling, and drilling. Key features include high precision and accuracy, capability for multiple operations, and minimal tool deflection. Common applications include medical devices, aerospace components, precision instruments, and electronics parts.

Swiss Machining

Processes long, slender parts on sliding-headstock lathes with gang tool posts, achieving < 5 µm true-position on Ø 0.2–32 mm stock.

Swiss-Type CNC Turning

Precision CNC Milling & Turning

Swiss Screw Machining at COMCO Plastics offers high-precision CNC machining for small, complex parts with tight tolerances using Swiss-type lathes. This process minimizes tool deflection and enables multiple operations such as turning, milling, and drilling in a single setup, ideal for medical, aerospace, and electronics components.

Swiss Screw Machining

COMCO Plastics provides thermoforming services that heat thermoplastic sheets until pliable and vacuum form them over temperature-controlled molds to create precise shapes. This process is suitable for thin-gauge packaging, trays, and display parts, offering cost-effective tooling and quick cycle times for low to medium production volumes.

Heats a thermoplastic sheet until pliable, then vacuums it over a temperature-controlled mold so the sheet conforms and cools to the final geometry. Ideal for thin-gauge packaging, trays and display parts where tooling cost must stay low.

Vacuum Thermoforming

Thermoforming

COMCO offers comprehensive assembly and fabrication services, including white glove fabrication to offload assembly processes. They assemble and fabricate multi-piece components ranging from simple parts to complex assemblies, ensuring quality and precision for diverse industry applications.

Metal fabrication covers the end-to-end transformation of raw metal (sheet, plate, bar, tube, or casting) into finished components or assemblies. Core steps include cutting, forming, punching/stamping, welding & joining, and mechanical assembly. These operations—supported by inspection and finishing—enable everything from lightweight brackets to structural frames in industries such as construction, automotive, aerospace, energy, and consumer products.

Metal Fabrication

Assembling involves putting together various metal components to form a complete unit. This can include methods like welding, riveting, and using threaded fasteners.

Assembling

Installs PEM inserts, Helicoils, bushings, and similar hardware so parts ship assembly-ready.

Light Mechanical Assembly

Integrates sensors, PCBs, and wiring with mechanical housings and performs basic functional tests.

Electromechanical Assembly

Spring Assembly & Integration combines precision-made springs with retainers, plungers, housings, or damping elements to deliver ready-to-install mechanical sub-assemblies. Automated cells perform press-fit, staking, adhesive bonding, and functional load-deflection tests, guaranteeing each assembly meets preload, travel, and fatigue-life criteria before shipment.

Spring Assembly & Integration

Provides torque-controlled mechanical assembly, precision press-fit and staking, and colour-coded kitting cells that consolidate lot-tracked hardware into turnkey, line-side-ready packages. Integrated pick-to-light guidance, ESD-safe workstations, and barcode/QR traceability ensure every fastener, sub-component, and completed kit meets specification and ships with full documentation.

Mechanical Assembly & Kitting

Assembly & Fabrication

COMCO Plastics provides specialized annealing processes to relieve internal stresses in plastic parts by controlled heating and cooling cycles. Their proprietary annealing methods optimize material ductility and dimensional stability, improving machinability and reducing the risk of warping or cracking in finished components.

Controlled heating and cooling cycles (anneal, quench-temper, solution-age, etc.) applied to metals or alloys to tailor micro-structure, strength and hardness while maintaining dimensional integrity.

Heat Treating

Annealing

Vapor Polishing is a post-processing technique that enhances the surface finish of plastic parts by using solvent vapors to smooth and polish surfaces, resulting in improved clarity and reduced surface roughness. This process is critical for achieving optical-grade finishes and removing machining marks without mechanical abrasion.

Polishing / Grinding encompasses abrasive stock-removal and surface-refinement operations applied after rough machining or heat treat. Grinding with bonded-abrasive wheels (Al₂O₃, SiC, CBN, diamond) brings parts to final size, geometry, and flatness, routinely holding ±0.002 mm and roundness < 0.001 mm on hardened steels > 60 HRC. Subsequent polishing stages—belt, buff, super-finishing, micro-finishing, or lapping—reduce surface roughness to Ra 0.05 µm–0.20 µm, produce plateau finishes for bearing surfaces, or achieve mirror cosmetics before coating or plating. Coolant-flooded machines, automatic size-control gauging, and filtered oil or water emulsions ensure thermal stability and contamination-free finishes for aerospace, medical, mould-and-die, and precision fluid-power components.

Polishing / Grinding

Super-finishing (Micro-finishing) removes the final microns of surface asperities using low-speed, low-pressure oscillating abrasive stones or tapes, producing a plateau finish with Ra ≤ 0.1 µm (4 µin). The process improves bearing life, reduces friction and enhances fatigue strength on shafts, hydraulic pistons, gears and raceways after grinding or hard turning.

Super-finishing / Micro-finishing

Vapor Polishing

COMCO Plastics maintains rigorous quality inspection and control processes, including ISO 9001 and ISO 13485 certified Quality Management Systems. Their inspection services encompass dimensional checks, non-destructive testing, and traceability to ensure products meet stringent specifications and regulatory standards across industries.

Inspection and Quality Control encompass a range of processes and techniques used to verify that manufactured parts and products meet required specifications, quality standards, and regulatory requirements. This includes visual inspections, dimensional checks, non-destructive testing, and automated inspection systems.

Inspection and Quality Control

Dimensional Inspection verifies that a part’s physical dimensions match design tolerances. Tools include calipers, micrometers, and CMMs, ensuring geometric accuracy of length, width, height, angles, and more.

Dimensional Inspection

Performs final dimensional gauging, threaded-fastener torque audits, and functional fit/actuation tests on sub-assemblies to ensure compliance with drawing tolerances and customer-specified performance criteria before kitting or shipment.

Dimensional, Torque & Functional QC

Inspection Reporting documents measurement, tests, and observations, ensuring parts meet specified tolerances. Critical for traceability and compliance in regulated industries (aerospace, automotive, medical).

Inspection Reporting

Maintains documented QMS, conducts internal audits, and interfaces with DCMA for government source inspection.

Quality-System Compliance (ISO 9001 / DCMA)

Quality Inspection & Certification

A global standard for quality management systems focusing on continuous improvement and customer satisfaction.

ISO 9001:2015

The design, manufacturing, and integration of high‐precision components, systems, and subsystems for commercial aircraft and military platforms, with emphasis on meeting stringent certifications such as AS9100, ITAR, and MIL‐STD. Priorities include advanced materials, rigorous quality assurance, and robust engineering to ensure reliability in mission‐critical applications.

Aerospace & Defense

Comco Plastics manufactures high-performance machined and fabricated plastic components specifically for aerospace applications, providing precision parts used in commercial and military aircraft systems where stringent quality and reliability standards are critical.

The development, manufacturing, and supply of precision-engineered medical systems, devices, and critical components, including diagnostic equipment, surgical instruments, implantable devices, laboratory systems, and precision medical components. Emphasizes adherence to ISO 13485 and FDA QSR standards, traceability requirements, sterile processing, rigorous validation, and use of biocompatible materials such as titanium, stainless steel, and medical-grade polymers to ensure patient safety and clinical effectiveness across global healthcare settings.

Medical Devices & Healthcare Equipment

Comco Plastics produces precision-machined plastic components and assemblies for medical devices, delivering high-quality parts designed for critical healthcare applications such as surgical instruments and implantable devices requiring biocompatibility and sterilization compatibility.

The design, manufacturing, and assembly of components and systems for passenger cars, commercial and off-highway vehicles, rail rolling stock, and emerging electric/Autonomous mobility platforms. High-volume production, IATF 16949 compliance, JIT supply chains, and continuous innovation ensure reliable powertrains, safety-critical systems, and cost-efficient delivery across a broad transportation landscape.

Automotive & Transportation

Comco Plastics fabricates and assembles precision plastic parts for the automotive industry, including engine components and vehicle exterior parts, supporting high-performance and durable applications in passenger and commercial vehicles.

Involves the fabrication and assembly of electronic components, semiconductor devices, printed circuit boards, and advanced microelectronics, as well as the manufacture of supporting mechanical components such as casings, enclosures, and structural parts. Cleanroom processes, ESD controls, precision machining, and adherence to industry standards (e.g., IPC, JEDEC) are critical for achieving high-density, high-performance products in mass-market, specialized, and ancillary applications.

Electronics & Semiconductors

Comco Plastics provides specialized fabrication and precision machining of plastic components for the semiconductor industry, supplying cleanroom-compatible parts with chemical resistance and static dissipation properties essential for semiconductor manufacturing equipment.

The fabrication, assembly, and outfitting of marine‐grade components and integrated systems for commercial vessels, naval ships, ferries, and offshore platforms. Emphasis is placed on advanced welding, corrosion‐resistant materials, and propulsion solutions that comply with certifications such as ABS and DNV, ensuring performance in demanding maritime environments.

Marine & Shipbuilding

Comco Plastics delivers fabricated and precision-machined plastic components for solar panel manufacturing equipment, enabling durable and chemically resistant parts used in assembly lines and processing systems within the renewable energy sector.

Upstream exploration and drilling, midstream transport, refining, and integrated petrochemical processing. Designs must withstand high pressure, corrosive media, and hazardous environments while meeting API/ASME and IECEx/ATEX safety standards across global operations.

Oil, Gas & Petrochemical

Comco Plastics manufactures high-performance plastic components for chemical processing applications, providing precision parts that withstand corrosive environments and support reliable operation in chemical plants and processing equipment.

COMCO Plastics, Inc. is a leading manufacturer specializing in high-performance machined and fabricated plastic components with over 65 years of expertise. Founded in 1956, COMCO delivers precision CNC milling, turning, Swiss screw machining, thermoforming, assembly, and fabrication services using a vast selection of thermoplastics and thermosets including ABS, acrylic, Delrin®, PEEK, nylon, PTFE, and more. The company holds ISO 9001:2015 and ISO 13485:2016 certifications, ensuring stringent quality management systems particularly for medical device manufacturing. COMCO serves diverse industries such as aerospace, medical devices, automotive, semiconductor, chemical processing, and solar panel manufacturing. Their facility emphasizes continuous improvement with Lean Six Sigma practices, achieving a 98% on-time delivery rate and offering white glove customer service. COMCO’s capabilities include complex multi-axis machining, fabrication of multi-piece assemblies, and finishing processes like annealing and vapor polishing, supporting high precision and tight tolerances for critical applications.

COMCO Plastics headquarters and primary manufacturing facility spans approximately 50,000 square feet, equipped with advanced CNC milling, turning, Swiss screw machines, thermoforming, and fabrication equipment. The facility is ISO 9001:2015 and ISO 13485:2016 certified, supporting high precision plastic component production for medical, aerospace, automotive, and semiconductor industries. Strategically located in Woodhaven, NY, it offers supply chain advantages with proximity to major transportation routes and ports, ensuring reliable and timely delivery.

COMCO Plastics Headquarters

COMCO Plastics specializes in precision machining and fabrication of high-performance plastic components for diverse industries with ISO-certified quality.

COMCO Plastics

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