Swiss Machining
Swiss screw machining produces small, complex plastic components with exceptional dimensional stability, tight tolerances, and multi-operation efficiency in a single setup for intricate custom parts.
Get custom plastic precision CNC machined parts backed by decades of screw machining expertise, tight-tolerance production, and integrated finishing. From prototypes to high-volume runs, M.A.R.'s Engineering delivers consistent quality, streamlined manufacturing, and responsive support for demanding applications that require accuracy, repeatability, and dependable lead times.

Precision machining solutions for plastic parts, from prototypes to repeatable production runs with integrated in-house support.
Swiss screw machining produces small, complex plastic components with exceptional dimensional stability, tight tolerances, and multi-operation efficiency in a single setup for intricate custom parts.
CNC turning supports precision cylindrical plastic parts such as bushings, spacers, fittings, and threaded components with consistent feature relationships across prototype and production quantities.
Single-spindle screw machining is ideal for short to medium runs of custom plastic parts requiring close tolerances, multiple operations, and efficient production of specialized geometries.
Multi-spindle screw machining delivers cost-efficient, high-volume production for plastic precision parts by performing multiple operations simultaneously with strong repeatability and throughput.
Centerless grinding supports cylindrical plastic components that need fine finishes, accurate outer diameters, and dependable consistency for mating assemblies and precision applications.
In-house finishing, polishing, deburring, and light assembly help deliver ready-to-use plastic machined parts while reducing outside vendors, delays, and handling risks.
M.A.R.'s Engineering manufactures custom plastic precision CNC machined parts with the flexibility to support prototypes, short runs, and high-volume production under one roof. By combining screw machining, CNC turning, grinding, and finishing services, the team helps customers reduce vendor handoffs, maintain dimensional consistency, and move from concept to completed parts with greater speed, control, and traceability.

See how precision machining expertise supports reliable parts across prototype, custom, and production manufacturing needs.
Customers rely on M.A.R.'s Engineering for precision, continuity, and efficient in-house manufacturing support.
Family-owned since 1964, with decades of precision screw machining knowledge across demanding industries.
In-house machining, finishing, and light assembly reduce delays, handoffs, and multi-vendor coordination issues.
Single-spindle and multi-spindle equipment supports both custom prototypes and efficient high-volume production.
ISO compliant processes and traceability help maintain repeatable tolerances and dependable production consistency.
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 precision manufacturing business ever since. Over the decades, the company expanded its capabilities through new equipment, a second operations department, multi-spindle capacity, and the addition of CNC and Wire EDM technology. That steady investment allows M.A.R.'s Engineering to support customers with complete manufacturing services from prototype through production in one facility. The company's vision centers on dependable quality, responsive service, and practical manufacturing efficiency, helping customers reduce lead times, simplify sourcing, and receive precision parts built to exact specifications.
M.A.R.'s Engineering can produce a wide range of custom plastic components, including bushings, sleeves, spacers, pins, threaded parts, fittings, and other turned or machined parts with close tolerances. Capabilities support simple cylindrical parts as well as more intricate geometries requiring multiple operations, fine finishes, and repeatable dimensional control across prototype and production quantities.
Talk with our team about drawings, tolerances, materials, and production options.
Quality-focused manufacturing process controls.
Supports documented inspection standards.
Backed by verified customer reviews.
Send your drawings, quantities, and material requirements to discuss custom plastic parts, lead times, and the right production 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.