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Business Details
50+ Years
experience
Precision CNC Machining Services in Aylesbury
Established in 1967, we are a family-owned precision engineering company based in Aylesbury, Buckinghamshire. Our expertise spans aerospace, defence, medical, electronic, analytical, scientific, motorsport, and motor industries. We maintain leadership through continuous investment in advanced machining technologies and rigorous quality control systems certified to ISO9001 and AS9100 standards. Our dedicated inspection department utilises coordinate measuring machines, surface testers, and calibrated gauges traceable to national standards.

We balance agility with technical capability, ensuring 100% on-time deliveries and quality assurance. Our Cyber Essentials certification guarantees robust data security, while our kan-ban dispatch system minimises supply chain costs. With over five decades of experience, we prioritise rapid quotation responses and tailored customer support, serving as a trusted partner for precision-machined components ready for assembly.
Services
CNC Machining CNC Milling CNC Turning Finishing Design Processes Testing Inspection Customer Relations Plant List Quality
Details
  • Year established: 1967
Highlights and features
  • Established in 1967 with continuous family ownership
  • ISO9001 and AS9100 certified quality control systems
  • Investment in cutting-edge multi-axis CNC machining technology
  • Dedicated inspection department with traceable calibration
  • Cyber Essentials certified IT infrastructure for data security
Associations and certifications
  • ISO 9001
  • AS9100
  • Cyber Essentials
Services
CNC Machining
Our multi-axis CNC machining delivers high-precision components for aerospace, medical, and industrial applications. Using advanced technology, we ensure tight tolerances and complex geometries meet exact specifications. With ISO9001 and AS9100 certifications, our processes guarantee consistent quality and traceability for critical sectors.
CNC Milling
Specialising in aerospace-approved CNC milling, we produce intricate parts with exceptional accuracy. Our capabilities include horizontal and sliding head machining, supporting rapid prototyping and large-scale production. Strict adherence to quality standards ensures components are ready for assembly without additional inspection.
CNC Turning
Our CNC turning services combine sliding head and multi-axis technologies to create precision-turned components. Tailored for industries requiring high repeatability and surface finish quality, these processes integrate seamlessly with our quality-certified workflows to meet demanding aerospace and medical sector requirements.
Finishing
We offer comprehensive finishing solutions to enhance component durability and performance. Partnering with established suppliers, our processes include heat treatment and surface treatments compliant with industry standards, ensuring optimal material properties for critical applications.
Inspection
Our dedicated inspection department utilises coordinate measuring machines, shadow graphs, and calibrated gauges to verify dimensional accuracy. All equipment is traceable to national standards, providing clients with full confidence in component conformity and quality assurance.
People
Neil C Fearnley
Managing Director
Neil C Fearnley leads C N F Precision Engineering with over five decades of family-owned industry expertise. Under his direction, the company maintains ISO9001 and AS9100 certifications while investing in advanced machining technologies to serve aerospace, medical, and industrial sectors globally.
Questions
What industries do you serve?
We supply precision-machined components to aerospace, defence, medical, electronic, analytical, scientific, motorsport, and motor industries.
Are your quality systems certified?
Yes, we operate under ISO9001 and AS9100 standards, with Cyber Essentials certification for IT security.
How quickly can you provide quotations?
Most quotations are completed within the same working day, though third-party dependencies may extend this slightly.
Do you offer on-site visits?
Yes, we can arrange visits with samples at your convenience to discuss specific machining requirements.
What quality inspection processes do you use?
We employ coordinate measuring machines, surface testers, and calibrated gauges traceable to national standards for all components.
How do you ensure timely deliveries?
Our kan-ban dispatch system minimises logistics costs while maintaining 100% on-time delivery performance.