Wire Electrical-Discharge Machining (EDM) uses a continuously fed brass or coated-copper wire to precisely erode electrically conductive materials without cutting forces. This process enables burr-free slots, sharp internal corners, and complex taper or helical profiles in hardened tool steels, carbide, titanium, and super-alloys with exceptional dimensional accuracy and surface finish.

Wire Electrical-Discharge Machining (EDM) drives a continuously spooled brass or coated-copper wire—Ø 0.004 – 0.012 in—through a de-ionized-water work tank while pulsing 60–300 V discharges between the wire and a grounded, fully conductive workpiece. Material is removed electro-thermally, leaving no cutting forces, enabling burr-free slots, internal corners down to 0.002 in radius, and high-aspect-ratio profiles in hardened tool steel, carbide, titanium and super-alloys. Multi-skim finishing passes routinely hold ±0.0001 in dimensional accuracy and surface finishes to 4 µin Ra (0.1 µm), while rotary axes and adaptive power control permit complex taper, helical and stack cutting without distortion or recast layer.

Wire EDM

Wire EDM Straight & Taper Cutting profiles conductive workpieces with a continuously fed brass or coated wire, achieving kerf widths only marginally larger than the wire diameter. Servo-controlled upper and lower nozzles permit taper angles up to ±30 ° while maintaining dimensional accuracy to ±0.002 mm across the cut thickness.

Wire EDM Straight & Taper Cutting

Multi-Electrode EDM deploys a carousel or linear tool changer to automatically swap roughing and finishing electrodes during unattended sinker-EDM cycles. Coarse electrodes remove bulk material quickly, followed by graphite or copper-impregnated finishing electrodes that achieve fine detail and surface finishes to Ra 0.3 µm.

Multi-Electrode EDM Rough & Finish Strategies

Sinker (RAM) EDM uses custom-shaped graphite or copper electrodes to erode hardened tool steels, carbide, and super-alloys by controlled spark discharge in a dielectric-oil gap. It produces blind cavities, sharp internal corners, and deep ribs with high accuracy and mirror-grade surface finishes, ideal for complex mold and tooling components.

Sinker (RAM) Electrical-Discharge Machining plunges a custom-shaped graphite or copper electrode into a dielectric-oil gap, eroding hardened tool steels, carbide and super-alloys by controlled spark discharge. The process delivers blind cavities, sharp internal corners and deep ribs that are impossible to mill, with ±0.0002 in accuracy and Ra ≤ 8 µin surfaces after multi-skim finishing passes.

Sinker EDM

EDM Drilling (Fast-/Micro-Hole) employs a rotating tubular electrode with pressurized dielectric to rapidly erode small, high-aspect-ratio holes in conductive materials. It achieves burr-free holes down to 0.2 mm diameter and depths exceeding 100× diameter, suitable for turbine blade cooling holes, fuel injector orifices, and micro-fluidic components, even after heat treatment.

EDM Drilling (also called Fast-Hole or Micro-Hole EDM) uses a rotating tubular electrode with pressurised dielectric to rapidly erode small, high-aspect-ratio holes in any conductive material. Diameters down to 0.2 mm and depths exceeding 100× Ø can be produced without burrs, making the process ideal for turbine blade cooling holes, fuel-injector orifices, starter holes for Wire EDM, and micro-fluidic components—even after heat treatment.

EDM Drilling (Fast-/Micro-Hole)

Small Hole EDM Drilling

CNC Machining utilizes computer-numerically controlled multi-axis milling, turning, and mill-turn equipment to subtractively manufacture parts with tight tolerances and repeatability. It supports a broad range of metals and engineering plastics, scalable from prototypes to production, with advanced CAM-driven toolpaths, in-process probing, and flexible workholding.

CNC Machining is subtractive manufacturing performed on computer-numerically controlled machine tools. Toolpaths generated from CAM drive multi-axis milling, turning, and mill-turn equipment to remove material accurately and repeatably. The approach enables tight tolerances, stable process capability, and scalable automation for prototypes through production across metals and engineering plastics.

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

Comprehensive engineering and design services including CAD/CAE modeling, finite-element analysis, tolerance stack-up, design-for-manufacturability and assembly feedback, and fixture design. The team leverages multi-CAD platforms and PLM integration to deliver optimized, manufacturable product designs with detailed documentation and simulation.

End-to-end engineering and design services including CAD/CAE modeling, finite-element analysis, tolerance stack-up, DFM/DFA feedback and fixture design. Teams leverage multi-CAD platforms and PLM integration to deliver manufacturable product designs optimized for cost, performance and assembly.

Engineering & Design Services

Provides end-to-end mechanical design of components and assemblies with integrated finite-element analysis. Engineers create parametric 3-D models, run linear/non-linear static, thermal, vibration, and fatigue simulations, and iterate designs for manufacturability, cost, and compliance. Deliverables include native CAD, detailed drawings, and FEA summary reports.

Mechanical Engineering Design & FEA

Creation of collision-free tool-paths, fixturing strategies and machine-specific post-processed NC code for 3- to 5-axis machining centres, turning, mill-turn and probing cycles, ready for shop-floor execution.

CNC Programming & Post-Processing Services

Design and analysis of jigs, nests and cutting tools using FEA and simulation to ensure repeatability and interchangeability.

Production Tooling & Fixture Design

Engineering and Design Support

Inspection and Quality Control (IQC) encompasses metrology, verification, and documentation to ensure parts meet design, customer, and regulatory requirements. Utilizing CMMs, laser scanning, optical systems, surface metrology, nondestructive testing, and SPC, IQC delivers traceable reports and compliance for incoming, in-process, and final inspections.

Inspection & Quality Control (IQC) comprises the metrology, verification, and documentation activities that ensure parts conform to drawing/CAD requirements, customer specifications, and regulatory standards. IQC spans incoming, in-process, and final inspection and leverages coordinate metrology (CMMs and portable arms), laser/structured-light scanning, optical comparators and vision systems, surface-form metrology (profilometers, roundness/contour testers), nondestructive testing (NDT), and statistical process control (SPC). Results are captured in traceable reports (e.g., AS9102 FAIR, PPAP) tied to calibrated gauges and controlled environmental conditions.

Inspection & 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

Provision and maintenance of a documented inspection system compliant with MIL-I-45208A, covering inspection planning, control of measuring equipment, sampling, nonconformance control, records, and periodic audits for defense/aerospace work.

MIL-I-45208A-Compliant Inspection System

Quality Control and Inspection

AS9100D is the 2016 revision of the aerospace Quality Management System (QMS) standard. It augments ISO 9001:2015 with aerospace-specific requirements for risk-based thinking, product safety, counterfeit-parts prevention, configuration management, and stringent supplier controls to ensure the safety and reliability of aviation, space, and defense products and services.

AS9100D

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

ISO 9001:2015

ISO 13485:2016 specifies requirements for a quality management system for medical device manufacturers, emphasizing regulatory compliance, product safety, risk management, and traceability throughout the lifecycle of medical devices.

ISO 13485:2016

Registration under the International Traffic in Arms Regulations (ITAR), 22 CFR §122, with the U.S. Department of State’s Directorate of Defense Trade Controls (DDTC). It authorizes a U.S. person or entity to manufacture, export, or broker defense articles, defense services, or related technical data listed on the United States Munitions List (USML), and is prerequisite to obtaining ITAR export licenses or Technical Assistance Agreements.

ITAR Registration

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

N.J. Precision Technologies, Inc. manufactures precision wire EDM, sinker EDM, and CNC machined components for aerospace and defense applications, including aircraft systems, missiles, satellites, and space launch vehicles, ensuring compliance with AS9100 and ITAR standards for mission-critical reliability.

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

N.J. Precision Technologies, Inc. provides ISO 13485 certified precision machining and assembly services for medical devices, including surgical instruments and implants, supporting stringent regulatory requirements and delivering high-quality components with tight tolerances and superior surface finishes.

Welding thick-walled reactor piping and critical containment structures for nuclear power. Requires advanced heat control, specialized filler metals, and compliance with nuclear codes (ASME Section III, RCC-M).

Nuclear Reactor Welding

Turbines, generators, balance-of-plant systems, and infrastructure spanning fossil, nuclear, wind, solar, hydro, and energy-storage projects. IEC / UL performance standards, robust fabrication, and long-life reliability support global power demand and decarbonization goals.

Energy & Power Generation (inc. Renewables)

N.J. Precision Technologies, Inc. specializes in the design, building, maintenance, and repair of tooling and dies, including stamping dies for metal, plastic, castings, forgings, and paper. Their precision machining and assembly capabilities support tooling applications that improve die life, accuracy, and production efficiency in manufacturing environments requiring high-quality forming and cutting tools.

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

N.J. Precision Technologies, Inc. fabricates and assembles precision components and mechanical parts for the semiconductor industry, utilizing cleanroom-compatible EDM and CNC machining processes to meet high standards of accuracy and contamination control.

N.J. Precision Technologies, Inc. supports the energy sector by manufacturing precision-machined parts and assemblies for power generation equipment, including turbines and renewable energy systems, ensuring durability and compliance with industry standards.

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

N.J. Precision Technologies, Inc. produces high-precision machined components and assemblies for the automotive industry, supporting passenger and commercial vehicle manufacturing with advanced EDM and CNC machining capabilities to meet stringent quality and volume requirements.

N.J. Precision Technologies, Inc. (NJPT) is a leading contract manufacturer specializing in precision wire EDM, sinker EDM, and small hole EDM drilling services. Founded in 1989 and headquartered in Mountainside, NJ, NJPT operates over 40 advanced Mitsubishi EDM machines and multiple CNC machining centers, offering vertically integrated manufacturing solutions from prototype to full production. The company serves diverse industries including aerospace, medical devices, tooling, plastic extrusion tooling, and defense, maintaining strict compliance with AS 9100, ISO 9001, ISO 13485, and ITAR regulations. NJPT's advanced capabilities include 5-axis CNC machining, multi-axis EDM, and comprehensive quality control with CMM inspection, enabling production of complex, high-tolerance components with tight tolerances down to +/- 0.0001 inches. Their facility is equipped with state-of-the-art equipment and software supporting all major CAD and 3D model file formats, ensuring precision, reliability, and regulatory compliance for critical applications in aerospace, medical, and defense sectors.

Headquarters housing over 40 Mitsubishi EDM machines including 5-axis wire EDM, sinker EDM, and small hole EDM drilling, plus CNC machining centers and advanced inspection equipment. The facility supports vertically integrated contract manufacturing for aerospace, medical, tooling, and defense industries with certifications including AS 9100, ISO 9001, ISO 13485, and ITAR registration.

N.J. Precision Technologies Headquarters

NJPT is a certified contract manufacturer specializing in precision EDM and CNC machining for aerospace, medical, and tooling industries.

NJPT

Precision Wire EDM Sinker EDM Contract Manufacturing

Wire EDM

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