In the world of advanced manufacturing, precision is more than a goal—it’s a necessity. Whether it’s an aerospace bracket, a medical implant, or an automotive valve body, the margin for error is nearly zero. At Zeometrix, we consistently deliver CNC machined parts with 20-micron accuracy—a level of precision that defines industry excellence.

But how do we achieve this extraordinary level of detail? In this blog, we take you behind the scenes of Zeometrix’s CNC operations to show the meticulous engineering, cutting-edge technology, and quality control practices that enable us to meet the tightest tolerances in the industry.

1. What Does 20-Micron Accuracy Mean?

A micron (μm) is one-millionth of a meter—or 0.001 mm. To put that into perspective:

• A human hair is about 70 microns thick
• A fingerprint ridge is around 100 microns wide
• 20 microns is smaller than a dust particle

Achieving 20-micron (0.02 mm) tolerance means that our parts deviate no more than 0.02 mm from the exact design dimensions. This level of precision is typically required in:

• Aerospace & defense components
• Medical and surgical devices
• Automotive fuel injection systems
• Semiconductor and optical tooling
• High-performance robotics

2. The Foundation: Engineering and Design Accuracy

Every micron of accuracy starts with solid design principles. At Zeometrix, we begin every CNC job with a detailed CAD (Computer-Aided Design) model, followed by CAM (Computer-Aided Manufacturing) simulation to ensure:

• Accurate toolpath generation
• Correct fixture strategy
• Machine compatibility
• Material behavior forecasting

Our engineers work closely with clients to review tolerances, material specs, and GD&T (Geometric Dimensioning & Tolerancing) before sending a job to the CNC floor. That collaboration ensures precision is baked in—not just added later.

3. Selecting the Right Materials

Material choice plays a major role in dimensional stability. Zeometrix sources only certified raw materials from trusted suppliers with full traceability.

Common materials machined with 20-micron tolerance:

• Aluminum 6061 / 7075
• Stainless Steel 304 / 316
• Titanium (Grade 2 & 5)
• Brass and Copper
• Plastics like PEEK, Delrin, and Ultem

These materials offer consistent machinability, thermal properties, and surface finish characteristics needed for high-precision work.

4. State-of-the-Art CNC Machines

At the core of our accuracy lies our investment in advanced CNC equipment.

High-Precision Machines at Zeometrix:

• 5-Axis CNC Machining Centers: For complex geometries and reduced setup errors
• Ultra-High Speed Vertical and Horizontal Mills: For rapid, stable cutting
• Swiss-Type Lathes: For small, intricate parts with sub-micron repeatability
• Coordinate Measuring Machines (CMMs): For real-time accuracy monitoring

Our machines come from industry-leading brands like HAAS, DMG MORI, Makino, and Citizen, offering micron-level positioning resolution and thermal stability features.

5. Tooling and Fixturing: Micron-Grade Stability

No matter how good the machine, without the right tooling and workholding, accuracy suffers.

Key Practices:

• Custom Precision Fixtures: Designed in-house for specific part geometries
• Balanced Cutting Tools: To reduce vibration and thermal distortion
• Tool Pre-Setters and Shrink Fit Holders: For repeatable positioning
• Real-Time Tool Wear Monitoring: Ensures each tool performs within its tolerance band

We also use modular zero-point fixturing systems that minimize repositioning error and reduce downtime.

6. Temperature and Vibration Control

Micron-level machining requires a controlled environment.

Environmental Controls at Zeometrix:

• Temperature-Regulated CNC Floor: Machines and materials are kept within a ±1°C range
• Vibration-Dampening Foundations: Minimize external or machine-induced movement
• Air Quality Management: Keeps dust and debris from interfering with cutting or metrology

Even small fluctuations in temperature can cause metal expansion or contraction that exceeds 20 microns—so our facility is built to eliminate that risk.

7. Programming for Accuracy

CNC programming isn’t just about toolpaths—it’s also about strategic material engagement.

Zeometrix Programming Best Practices:

• Step-over Optimization: Reduces tool deflection
• Adaptive Roughing and Finishing: Improves surface quality and dimensional control
• Rest Machining Techniques: Focus on fine-feature finishing
• Peck Drilling and Reaming: Ensures bore size precision

We use industry-grade CAM software (such as Mastercam, Fusion 360, and NX) to simulate, verify, and test every operation before production.

8. Precision Metrology: How We Verify 20 Microns

You can’t measure what you can’t see so Zeometrix has invested in a full suite of precision metrology equipment.

Metrology Tools We Use:

• CMMs with Renishaw Probes: For multi-point inspection
• Vision Systems: For non-contact measurement of delicate or micro parts
• Laser Micrometers: For shafts and cylindrical components
• Digital Bore Gauges, Micrometers, and Dial Indicators
• Surface Profilometers: For Ra measurement on critical surfaces

Each batch includes a First Article Inspection (FAI) and Statistical Process Control (SPC) to maintain confidence throughout production.

9. Real-Time Process Monitoring

Zeometrix integrates IIoT (Industrial IoT) tools to monitor our machining processes live.

IIoT-Enabled Precision Monitoring Includes:

• Machine temperature sensors
• Tool wear analysis
• Spindle load monitoring
• Real-time feedback loops for toolpath correction

By connecting machines to the cloud through platforms like OneSense, we’re able to track job performance, maintain consistency, and react instantly if deviations occur.

10. Skilled Operators and Inspection Engineers

Even the most automated system needs human expertise.

Our Team Includes:

• CNC Programmers with years of high-precision experience
• Master Machinists trained in micro-fabrication techniques
• QC Engineers with CMM and GD&T certifications
• Continuous Improvement Specialists using Six Sigma tools

This skilled workforce is what transforms machines into tools of craftsmanship—and ensures every 20-micron promise is kept.

11. Industry Applications of 20-Micron CNC Parts

Our high-accuracy CNC parts are used in industries where failure is not an option:

Such industries demand parts that not only fit but fit perfectly every single time.

12. Prototyping with Production Accuracy

Many CNC manufacturers offer quick prototypes but Zeometrix prototypes with production-grade precision.

Advantages of Our Prototyping:

• Use of production material and tolerances
• Reduces design risk in scaling up
• Ensures real-world performance testing
• Accelerates go-to-market timelines

Our team delivers functional prototypes that mirror the final product—ideal for validation and pilot production.

13. Compliance and Certifications

Zeometrix adheres to stringent industry standards to validate our high-accuracy manufacturing.

Certifications and Standards:

• ISO 9001:2015 – Quality Management Systems
• AS9100 – Aerospace Quality
• ISO 13485 – Medical Devices
• RoHS / REACH Compliance
• Full traceability on materials, batches, and processes

These certifications are not just about compliance—they’re about trust.

14. Custom Packaging and Traceability

Precision doesn’t stop at the part—it extends to how it’s handled and delivered.

We Offer:

• Protective foam and vacuum-sealed packaging
• Cleanroom-ready packaging for medical parts
• Serialization and laser marking for traceability
• Digital documentation: CoC, FAI, RoHS reports

This ensures that every part arrives in perfect condition—ready to install or assemble.

15. Why Zeometrix?

Choosing Zeometrix for high-accuracy CNC machining gives you:

• 20-micron tolerance consistency
• End-to-end support: design to inspection
• Advanced machining + digital monitoring
• Speed, scale, and flexibility
• Dedicated engineers on every project

Whether you're building the next-gen satellite, electric vehicle, or life-saving device—our precision becomes your competitive advantage.

Final Thoughts

Micron-level CNC machining is not easy but at Zeometrix, it's standard.

With a blend of advanced machinery, expert programming, controlled environments, precision inspection, and digital process management, we ensure that 20-micron accuracy is not a target—it’s a guarantee.

If your project demands perfection, let Zeometrix be your manufacturing partner.

Ready to build parts with 20-micron accuracy?
Get in touch with Zeometrix today for a quote or free consultation.