PRECISION
MANUFACTURING.
Creating complex parts, tight tolerances, and fast turnarounds. We're a manufacturing partner, not just a vendor — keeping the majority of operations in-house to control quality, lead times, and communication.
Years of Quality Craftsmanship
High Precision Wire EDM
R.L. Zeider's Wire EDM's can create some of the most complex and precise parts imaginable. the part displayed has a tolerance of +/-.0002".
A Manufacturing Partner, Not Just a Vendor
For over 60 years, R.L. Zeider has solved difficult manufacturing challenges by combining multiple processes under one roof.
Prototype to Production
We support everything from R&D prototypes to production runs in the thousands.
Diverse Industry Experience
Aerospace, medical, pharmaceutical, industrial, precious metals, and more.
Multiple Processes Under One Roof
CNC Milling, CNC Turning, Wire EDM, Sinker EDM, Heat treating, Blanking, Forming, Piercing, Polishing, Tumbling.
Direct Access
Work directly with ownership for fast decisions and clear communication.
Full-Service In-House Machining
From prototype to production, our comprehensive machining capabilities serve the most demanding industries.
CNC Milling
3-axis and 4-axis precision milling for complex geometries and tight tolerances.
CNC Turning
Multi-axis CNC turning for precision cylindrical components with live tooling.
Wire EDM
Precision wire EDM for intricate shapes and hard materials with no cutting forces.
Sinker EDM
Sinker EDM for complex internal cavities, blind holes, and intricate details.
Tool & Die / Press
Custom tool and die component manufacturing, precision forming, piercing, and press work for repeatable production.
Laser Marking
Permanent laser marking and engraving for part identification and traceability.
Tooling & Fixtures
Custom tooling and fixture design and manufacturing for production optimization.
Prototype Machining
Rapid prototyping services with quick turnaround for design validation and testing.
Production Machining
High-volume production machining with consistent quality and on-time delivery.
Machinery That Sets the Standard
Our floor is equipped with industry-leading CNC mills, lathes, EDM, and inspection systems.
Azimuth Servo Punch Press
HAAS ST-20Y
HAAS VF-3
Trusted Across Critical Sectors
Aerospace
Precision components for commercial and military aircraft, satellites, and space systems. We meet the stringent quality and documentation requirements of the aerospace industry.
Medical
Precision-machined components for medical devices, surgical instruments, and implants, manufactured to customer specifications.
Industrial
Custom parts for industrial machinery, equipment, and automation systems across all manufacturing sectors.
Automotive
High-precision components for automotive applications, from prototype to production volumes.
Research & Development
Rapid prototyping and custom machining for R&D labs, universities, and innovation centers.
Custom Manufacturing
Whatever your industry, we can manufacture custom precision parts to your exact specifications.
Pharmaceutical
Precision components for pharmaceutical manufacturing equipment and medical device applications, produced to exact specifications and documentation standards.
Precious Metals
Precision machining and finishing of precious and specialty metals for jewelry, nameplates, engraved products, and specialty alloy components.
A Family Legacy of Precision
For over 60 years, R.L. Zeider has been a trusted part of Southern California's manufacturing community — a small, family-owned shop that punches above its weight.
We combine old-world craftsmanship with modern CNC and EDM technology, serving aerospace, medical, and industrial clients who demand nothing less than absolute precision.
Learn Our StoryWhat Our Clients Say
"R.L. Zeider has been our go-to precision machining partner for over a decade. Their responsiveness and quality are unmatched in Southern California."
"From prototype to production, R.L. Zeider has been an extension of our team. They understand our requirements and deliver every time."
"The Zeider team consistently delivers complex parts to exact specifications. Their attention to detail and quality documentation gives us complete confidence."
Quality You Can Trust
Quality Systems — In Development
We hold ourselves to rigorous inspection and traceability standards on every part we ship. Formal industry certifications are currently being pursued — check back for updates.
Let's Build Something Precise.
Submit your RFQ today and experience the R.L. Zeider difference — responsive service, uncompromising quality, and decades of expertise.