Miniature Components
Manufacturing of miniature precision medical parts with complex geometries and ultra-tight tolerances using Swiss machining and wire EDM for critical small-diameter applications.
Custom medical components demand precision, traceability, and dependable repeatability. M.A.R.'s Engineering delivers tightly controlled machining and integrated finishing for prototype through production runs, helping medical manufacturers source miniature parts, threaded components, and critical assemblies from one experienced California facility with nearly 60 years of machining expertise.

Precision manufacturing services for medical parts requiring tight tolerances, traceability, and scalable production support.
Manufacturing of miniature precision medical parts with complex geometries and ultra-tight tolerances using Swiss machining and wire EDM for critical small-diameter applications.
Swiss-type CNC machining for slender, intricate medical components requiring exceptional dimensional stability, fine features, and repeatable accuracy across prototype and production quantities.
Wire EDM services for conductive medical components needing sharp internal corners, intricate outlines, and precise features in hardened or difficult-to-machine materials.
Precision CNC turning for cylindrical medical parts such as bushings, fittings, pins, and threaded components with consistent feature relationships and scalable output.
Close-tolerance bushings and sleeves produced with turning and centerless grinding to achieve precise fits, smooth finishes, and dependable performance in medical assemblies.
Integrated finishing, plating, polishing, deburring, and light assembly services that help deliver medical components ready for downstream use or final integration.
M.A.R.'s Engineering supports medical manufacturers with custom-machined components built for accuracy, consistency, and streamlined sourcing. From miniature parts and threaded features to finishing and light assembly, the team combines multiple in-house capabilities to reduce handoffs, shorten lead times, and maintain traceability throughout production. That means fewer vendors, tighter control, and dependable quality for critical medical applications.

See why manufacturers rely on consistent machining, integrated processes, and dependable production support.
Medical manufacturers choose a partner that can deliver precision, consistency, and fewer production bottlenecks.
Family-owned since 1964 with decades of precision machining knowledge for demanding component applications.
In-house machining, finishing, and light assembly reduce vendor handoffs and simplify project management.
Capabilities include tolerances up to 0.0001 inches for critical medical parts and mating features.
ISO-compliant quality systems support consistent output, documented inspections, and full production traceability.
Built on decades of family-run machining expertise.
M.A.R.'s Engineering Company Inc. was founded in 1964 by Manuel and Reine Ambrosio and has remained a family-run business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, multi-spindle capacity, CNC machining, and in-house Wire EDM. That steady investment has helped the company support customers needing close-tolerance parts, faster turnaround, and dependable production consistency. Today, M.A.R.'s Engineering continues to serve manufacturers with an integrated approach that combines prototyping, machining, finishing, and light assembly under one roof. The company's focus remains the same: responsive service, precision workmanship, and practical manufacturing solutions that save customers time and reduce unnecessary complexity.
M.A.R.'s Engineering manufactures a wide range of custom medical components, including miniature precision parts, pins, shafts, bushings, sleeves, threaded parts, fittings, connectors, and other turned components. The shop supports complex geometries, small-diameter parts, and close-tolerance features using Swiss machining, CNC turning, EDM, grinding, and finishing processes in one facility.
Talk with our team about specs, tolerances, and production planning.
Supports documented quality and traceability.
Aligned with strict inspection standards.
Long-standing precision manufacturing experience.
Share your drawings, quantities, materials, and tolerance needs. Our team will review your project and help identify the right manufacturing approach.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.
For immediate assistance, feel free to give us a direct call at +1 510-483-0541. You can also send us a quick email at info@marseng.com.