Published - 5th Jun 2026
How lights-out CNC machining delivers faster lead times, greater capacity and a more resilient supply chain for customers
Author: Stuart Franklin, Commercial Business Manager at Metaltech Precision
Metaltech Precision now supports near-continuous CNC machining – delivering faster lead times, greater capacity and improved supply chain resilience for customers in aerospace, defence, energy, pump and valve and other precision industries.
Lights-out CNC machining allows metal component manufacturing companies to increase efficiency by using automated systems to maintain production outside normal working hours. Metaltech Precision is now investing in round-the-clock manufacturing capability to benefit customers: delivering metal components more quickly, with improved capacity and greater supply chain resilience.
Lights-out manufacturing is a production approach where factory machines operate without human intervention. Automated machines can run through the night, over weekends and beyond standard working hours.
Lights-out CNC machining capability relies on automated loading systems, intelligent tooling management and real-time monitoring to maintain output and quality without an operator present.
In subcontract CNC machining, lights-out capability is significant because it effectively multiplies available production hours without adding headcount, and without compromising the precision tolerances demanded by performance-critical industries.
Metaltech Precision has invested in advanced automation systems that enable true lights-out CNC machining across our facility in Somerset. Stuart Franklin, Commercial Business Manager, explains that this provides both additional capacity and the flexibility to meet short deliveries for our customers:
“Our five-axis machining centres can now run for 30 to 40 hours without operator intervention, meaning a job set up on a Friday afternoon can continue to run through the weekend and be ready by Monday morning.”
The new investment builds on our existing automated gantry multi-tasking capability and complements our 50+ CNC machining centres, which include fixed head turning, vertical turning, sliding head, 5-axis milling and multitask machining.
Tuscan TMA 130 Automated Pallet System
Automated pallet loading systems are designed to keep CNC machine spindles running continuously. Our new 32-pallet, palletised automation system feeds two milling machines (one 5-axis and one 3-axis) and can be used to run multiple ‘shorter run’ jobs in sequence, or for long-run operations.
In addition to providing high-volume lights-out machining, this end-to-end automated solution:
Nakamura multi-tasking centre with bar feed and robot billet loading
Metaltech Precision’s Nakamura-Tome WT-300 is a highly automated multi-axis lathe (or turning centre). Twin spindles and twin turrets enable the machining of two parts simultaneously, reducing cycle times and manual handling.
The Nakamura includes automated bar feeding and is supported by automated billet loading from a Hydrafeed RoboJob robot arm, meaning the multi-tasking CNC machines can work around the clock with minimal supervision.
The team has experience machining a range of materials on the Nakamura, including exotic metals such as Remko soft iron which requires specialised expertise to machine efficiently
NFX400 with Tuscan RC35 (40-vice automation)
Metaltech Precision’s NFX400 is a simultaneous 5-axis vertical machining centre designed especially for small, complex, high-quality parts often used in aerospace, automotive and medical applications.
The NFX400 is supported by a Tuscan RC35 high-speed, high-precision CNC machine tending automation cell developed by YMT Technologies, and is part of a cell of automation including the UV650 system.
Sliding head and Miyano turning centres
Further lights-out bar-fed capacity is provided by our sliding head and Miyano turning centres, further extending overnight and weekend throughput.
For procurement managers and engineers in performance-critical industries, automated 24/7 machining has direct, measurable implications for project delivery, capacity planning and supply chain management.
Shorter lead times
Where machining was previously constrained to standard working hours, lights-out operation extends production across evenings, nights and weekends – without additional headcount. A job set up on a Friday afternoon can complete over the weekend and be ready for despatch on Monday morning. This extra runtime translates into significantly faster turnaround times, particularly valuable for urgent orders or programmes with fixed delivery milestones.
Greater capacity and flexibility
Lights-out CNC machining creates capacity headroom that benefits every customer. Automated cells can handle multiple jobs in sequence, meaning urgent orders and demand peaks no longer compete with standard production in the same way. For customers with variable volumes or complex components requiring multi-axis machining, this flexibility reduces scheduling constraints and supports more responsive order management.
Supply chain resilience
Consistent, reliable delivery is a deciding factor when selecting a subcontract machining partner, especially in sectors where component lead times affect operational readiness. Metaltech Precision’s 24/7 machining capability supports supply chain resilience for customers in:
When programme schedules are fixed and volume consistency matters as much as unit quality, a machining partner with genuine lights-out capability provides a level of assurance that standard-hours operations cannot.
Consistent part quality, around the clock
Automated machining does not mean reduced oversight. Every component produced during an unmanned overnight run is held to the same tolerances as those machined during staffed hours: verified through Metaltech Precision’s CMM inspection process and ISO 9001 and AS9100-certified quality management system. CNC machining centres with robotic support maintain consistent performance across repeat operations, including high-volume runs and complex geometries.
A committed long-term manufacturing partner
Metaltech Precision’s ongoing investment in lights-out automation reflects its approach as a long-term supply chain partner rather than a transactional supplier. Supported by the Expromet Technologies Group, Metaltech offers the stability, capacity and continuous improvement that performance-critical customers require over the long term.
Rather than reducing headcount as a result of automation, Metaltech Precision is focussing on higher-value skills. Instead of reloading machines, our machinists are training to design the programmes that allow machines to work continuously – and increased automation also means fewer repetitive or physically demanding jobs for the team.
As Dassault Systèmes noted in their 2026 CNC Machining Trends report:
“This new wave of automation is less about replacing workers and more about amplifying skilled labour — letting one technician oversee several machines, interpret analytics, and manage exceptions rather than repetitive loading tasks.”
Metaltech Precision is continuing to recruit and develop our team to upskill and design the programmes that allow those machines to run continuously and intelligently.
Every component produced during an unmanned overnight run is held to exactly the same tolerances and machining quality control as those machined during the day, verified through Metaltech Precision’s CMM inspection process and ISO 9001 and AS9100-certified quality management system. CNC machining centres with robot support are consistent throughout repeat operations, including high-volume or complex production runs and materials.
This investment in automation reflects Metaltech Precision’s approach as a long-term manufacturing partner. Our 50,000 sq ft facility in Somerset is powered by our own on-site solar farm, making us one of the more sustainably operated machining businesses in the UK. Automation extends that commitment, as optimised machine cycles mean reduced energy per part and a smarter use of resources.
Metaltech Precision offers the full suite of CNC machining processes in a wide range of sizes and materials, supported by certifications in aerospace, defence and rail.
“This investment demonstrates the commitment of Metaltech Precision and Expromet Technologies Group to providing a robust metal manufacturing supply chain partnership for performance-critical sectors,” confirms Stuart Franklin. “We continue to invest in the people and processes that deliver the high quality our customers expect.”
If you are evaluating subcontract CNC machining partners, or have projects constrained by lead time or volume, get in touch to discuss what our automation capability means for your programme, or contact Stuart directly on LinkedIn.
1. What is lights-out CNC machining?
Lights-out CNC machining is automated production that runs without a human operator present. Machines handle loading, tooling and monitoring autonomously, allowing manufacturing to continue through nights, weekends and bank holidays.
2. How long can CNC machines run without an operator?
With the right automation, CNC machines can run for 30 to 40 hours unattended. At Metaltech Precision, a job set up on Friday afternoon is typically ready by Monday morning.
3. Does lights-out machining affect part quality?
No. Parts produced in unmanned runs are held to the same tolerances as those made during staffed hours, verified through CMM inspection under ISO 9001 and AS9100 certification.
4. What components are suited to lights-out CNC machining?
Both high-volume turned parts – such as flanges, fittings and nuts – and complex multi-axis milled components such as impellers and aerospace structural parts can be produced lights-out.
5. Which industries use lights-out CNC machining?
Aerospace, defence, oil and gas, and pump and valve manufacturing are the primary sectors, along with automotive and medical applications requiring high repeatability and tight tolerances.
6. Where is Metaltech Precision based?
Metaltech Precision operates from a 50,000 sq ft facility in Somerset, UK, with over 60 CNC machining centres and certifications covering aerospace, defence and rail.
7. How do I get a quote for CNC machined parts?
Contact Metaltech Precision directly to discuss your requirements, lead times and component specifications.
If you have a project, talk to our experienced sales team
Contact usAccess our library of images, videos, vacancies and latest news.
This gallery provides an insight into our work, our team and our impeccable quality.
A comprehensive gallery showcasing our expertise in turning, milling and general machining.
Download our company brochure here.
Looking for a new role? See our latest jobs here.
Articles, features, latest work and general company updates.
