What is CNC Machining?
⇒CNC machining, or Computer Numerical Control machining, is a highly versatile manufacturing process that utilizes automated, high-speed cutting tools to precisely remove material from a workpiece—typically metal or plastic—until the desired shape and dimensions are achieved.
⇒Common types of CNC equipment include 3-axis, 4-axis, and 5-axis milling machines, lathes, and routers. These machines operate in various ways: some move the tool while the workpiece remains stationary, others rotate and move the workpiece while the tool stays fixed, and some models move both the tool and workpiece simultaneously.
⇒The process begins when machinists receive a CAD (computer-aided design) model, often referred to as a 3D file. Using this model, they program the tool paths required to produce the part. An experienced machinist optimizes these paths to improve accuracy, maintain tight tolerances, and reduce overall CNC machining costs.
⇒CNC machines are capable of cutting a wide range of materials, including metal alloys, plastics, wood, stone, ceramics, and more. This flexibility makes CNC machining essential for producing custom parts across industries such as automotive, robotics, medical devices, aerospace, electronics, and industrial equipment.
⇒At 3ERP, we offer professional CNC machining services and provide custom quotes for a variety of materials—from standard options like aluminum, steel, stainless steel, ABS, and acetal, to advanced metals such as titanium and Inconel, as well as high-performance engineered plastics including Teflon, PPS, PEI, and PEEK.
CNC Machining Tolerances & Capabilities
At Nylon plastic, we pride ourselves on delivering precision-engineered parts that meet the most demanding specifications. Our advanced CNC equipment and rigorous quality control ensure that every component, from prototype to high-volume production, is built to perfection.
Below is a detailed overview of our standard machining tolerances and key capabilities:
| Feature | Specification |
|---|---|
| Standard Tolerances | Metals: ISO 2768-m Plastics: ISO 2768-c |
| Precision Tolerances | We can hold strict tolerances as specified on your drawings, including GD&T and tight tolerances within ±0.001 inches. |
| Minimum Wall Thickness | 0.5 mm |
| Minimum End Mill Size | 0.5 mm |
| Minimum Drill Size | 1.0 mm |
| Maximum Part Size | Milling: 4000 × 1500 × 600 mm Turning: Ø 200 × 500 mm |
| Minimum Part Size | Milling: 5 × 5 × 5 mm Turning: Ø 2 × 2 mm |
| Production Volume | Prototyping: 1 – 100 pcs Low-Volume: 101 – 10,000 pcs High-Volume: 10,001+ pcs |
| Standard Lead Time | 5 business days for most projects. Expedited delivery for simple parts is available in as fast as 1 day. |
Our Plastic Injection Molding Services
High-Quality Injection Molding with Competitive Pricing & Fast Turnaround
CNC Turning Services
Gear Manufacturing Services
High-Volume CNC Production
CNC Machining Services FAQ
Our comprehensive CNC machining capabilities include:
Fresagem de 3 eixos: Precision machining for simple to moderately complex parts
Fresagem de 5 eixos: Complex geometries and simultaneous multi-surface machining
CNC Turning: Precision lathe work for rotational parts
Multi-Axis Turn-Mill: Combined turning and milling operations
Swiss-Type Machining: High-precision, high-volume small parts production
Mill-Turn Centers: Complete part processing in single setup
We work with extensive material options:
Aluminum Alloys: 6061, 7075, 5052 for lightweight applications
Stainless Steels: 303, 304, 316, 17-4PH for corrosion resistance
Tool Steels: D2, A2, O1 for molds and tooling
Exotic Metals: Titanium, Inconel, Monel for extreme environments
Plastics: Delrin, PEEK, Nylon, PTFE for non-metallic applications
Copper & Brass: For electrical and decorative components
We maintain precision tolerances:
Standard Machining: ±0.005 inches (±0.127mm)
Precision Machining: ±0.001 inches (±0.025mm)
High-Precision: ±0.0005 inches (±0.012mm) achievable
Geometric Tolerancing: GD&T per ASME Y14.5 standards
Acabamentos de superfície: From 8 Ra to 125 Ra depending on requirements
Our machine envelope capabilities:
3-Axis Mills: 40" x 20" x 20" (1000x500x500mm)
5-Axis Mills: 30" x 20" x 20" (750x500x500mm)
CNC Lathes: Up to 12" diameter x 40" length
Swiss Machines: Up to 1.5" diameter x 12" length
Large Format: Custom solutions for oversized components
We support all major CAD formats:
3D CAD: STEP, IGES, SLDPRT, PRT, X_T
2D Drawings: PDF, DWG, DXF with complete specifications
CAM Files: Native CAM files from major software packages
Point Clouds: For reverse engineering applications
Our manufacturing timelines include:
Prototype Parts: 3-5 business days
Production Quantities: 1-2 weeks depending on volume
Complex Parts: 2-3 weeks with multiple operations
Emergency Services: 24-48 hour rush service available
Large Volumes: Custom scheduling for ongoing production
Our comprehensive quality assurance:
First Article Inspection: Complete dimensional verification
Inspeção durante o processo: Real-time quality monitoring
CMM Measurement: Precision coordinate measuring machines
Surface Roughness Testing: Profilometers for finish verification
Material Certification: Full traceability and compliance
ISO 9001: Certified quality management system
Our expertise spans multiple sectors:
Aeroespacial: Structural components, brackets, fittings
Médico: Surgical instruments, implants, device components
Automóvel: Engine components, transmission parts, prototypes
Defense: Weapon systems, tactical gear, communication equipment
Eletrónica: Enclosures, heat sinks, connector components
Industrial: Machine components, tooling, fixtures
Complete post-machining services available:
Deburring: Manual and automated edge breaking
Surface Treatments: Anodizing, plating, painting, powder coating
Heat Treatment: Annealing, hardening, stress relieving
Assembly: Press fits, welding, adhesive bonding
Marking: Laser engraving, etching, serialization
Embalagem: Custom packaging for protection and presentation
Advanced machining strategies:
5-Axis Simultaneous: Complex contours and undercuts
High-Speed Machining: Improved surface finishes and accuracy
Custom Tooling: Special cutters for unique features
Probing Systems: In-machine verification and adjustment
Temperature Control: Environmental controls for thermal stability
Our DFM expertise includes:
Feature Optimization: Designing for standard tooling
Tolerance Analysis: Right-sizing tolerances for function
Seleção de materiais: Choosing optimal materials for application
Setup Reduction: Designing for minimal operations
Cost Optimization: Balancing performance and manufacturing cost
throughout the process
Transparent cost structure:
Setup Charges: Machine programming and preparation
Hourly Rates: Based on machine time and complexity
Material Costs: Raw material plus processing
Operações secundárias: Additional services priced separately
Volume Discounts: Tiered pricing for production quantities
Tooling Costs: Special tooling if required
Prototyping: 1-50 parts with rapid turnaround
Bridge Production: 50-500 parts for testing and validation
Production Volumes: 500+ parts with optimized processes
Just-in-Time: Scheduled deliveries for ongoing needs
Low-Volume High-Mix: Efficient small batch production
Principais benefícios
Reduced Costs: Achieve savings through optimized material usage and intelligent wall-thickness design.
Enhanced Manufacturability: Validate production feasibility with evaluations of draft angles and parting lines.
Fewer Defects: Receive early alerts for potential issues like sink marks and weld lines.
Data-Driven Confidence: Make informed decisions with detailed mold flow analysis on filling, cooling, and warpage.
Principais benefícios
Define Your Needs based on mechanical, thermal, and chemical requirements.
Navigate Compliance with expert guidance on RoHS, REACH, and other standards.
Balance Cost & Performance to identify the most economical solution.
Verify Your Choice with professional material testing and certification support.
You Can Expect:
Optimized Production Efficiency: Mold designs that shorten cycle times and maximize output.
Guarded Part Quality: Ensured dimensional stability and aesthetic excellence for every part.
Long-Term Reliability & Ease of Maintenance: Designs that minimize downtime and reduce lifetime operating costs.
A Tailored Solution: A mold precision-engineered for your specific product requirements and volume targets.
Your Key Benefits:
Boosted Efficiency & Output through streamlined cycle times.
Enhanced Quality Consistency with reduced part-to-part variation.
Significant Cost Reduction by minimizing scrap and energy waste.
A More Robust Production Line with greater overall operational stability.
3-Step Process
How to Work？
From the moment your injection mold order is confirmed, we follow a standardized procedure to ensure transparency and smooth transitions at every step. This process keeps both our team and customers fully informed on the progress, guaranteeing that each phase is executed efficiently. Here’s how we begin and complete your injection mold project: