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Custom Aerospace Tooling Design & Manufacturing

M.A.R.'s Engineering delivers custom aerospace tooling design and manufacturing with the precision, traceability, and fast in-house support demanded by flight-critical programs. From prototype tooling to production-ready components, our San Leandro facility combines EDM, CNC, Swiss machining, and finishing to help aerospace teams reduce lead times, maintain tight tolerances, and keep complex projects moving.

Custom aerospace tooling manufacturing

Our Aerospace Tooling Services

Integrated in-house machining and tooling support for aerospace prototypes, custom fixtures, and production-ready precision components.

EDM Tooling

Wire EDM supports custom aerospace tooling with sharp internal corners, intricate profiles, and hardened material machining for precise dies, fixtures, and specialty tool components.

Swiss Machining

Swiss screw machining produces small, complex tooling parts with ultra-tight tolerances, making it ideal for aerospace pins, inserts, spacers, and high-aspect-ratio components.

CNC Turning

CNC turning delivers accurate cylindrical tooling components such as bushings, shafts, fittings, and threaded parts with strong repeatability from prototype through production.

CNC Milling

4-axis CNC milling creates custom tooling bodies, machined blanks, and detailed aerospace components requiring multi-face machining and efficient feature completion.

Centerless Grinding

Centerless grinding achieves fine finishes and diameter tolerances down to 0.0001 inches for tooling pins, sleeves, and cylindrical aerospace components.

Finishing Assembly

In-house finishing, plating, polishing, and light assembly help deliver aerospace tooling components ready for installation, corrosion resistance, and functional performance.

Aerospace tooling manufacturing process

Our Aerospace Tooling Process

Review Drawings and Requirements

We evaluate part drawings, tolerances, materials, and functional requirements to determine the best tooling approach. This early review helps aerospace customers avoid manufacturability issues and align tooling performance with inspection and traceability expectations.

Select the Right Manufacturing Method

Produce Tooling Components In-House

Inspect for Accuracy and Traceability

Finish and Deliver Ready-to-Use Parts

Built For Precision

Proven Results

Trusted machining and tooling support for demanding aerospace and high-tolerance manufacturing applications.

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe

"We’ve had an excellent experience working with Mars. Their screw machining capabilities are top‑notch, and the precision of the parts they deliver is consistently impressive. The team is knowledgeable, responsive, and easy to work with, and their experience really shows in the results."

Tom O'Keefe
Tom O'Keefe
The M.A.R.'s Difference

Why Choose M.A.R.'s Engineering?

Aerospace customers rely on us for precision, responsiveness, and integrated in-house manufacturing support.

Experience

Family-owned since 1964, with decades of precision machining knowledge for complex aerospace tooling work.

Integrated

EDM, CNC, grinding, and finishing in San Leandro reduce vendor handoffs and lead-time risk.

Traceability

ISO-compliant quality systems support dimensional consistency, documentation, and dependable production repeatability.

Flexibility

We support prototypes through high-volume runs for Bay Area aerospace and advanced manufacturing customers.

About Our Team

Built on decades of machining expertise.

M.A.R.'s Engineering has been a family-run precision manufacturer since 1964, founded by Manuel and Reine Ambrosio and grown through steady investment in people, equipment, and in-house capability. Based in San Leandro, we support demanding industries with close-tolerance machining, custom tooling, and complete manufacturing services from prototype through production. Over the years, the company expanded with multi-spindle capacity, a CNC department, and Wire EDM to improve quality control and toolmaking responsiveness. That long-term commitment matters in the Bay Area, where aerospace and advanced manufacturing customers need dependable turnaround, traceability, and consistent communication. Our vision is simple: deliver precise, efficient, single-source manufacturing that helps customers reduce delays, control quality, and keep critical projects on schedule.

Since 1964Family-owned precision manufacturing experience.
35 MachinesSingle-spindle capacity for flexible production.
One FacilityPrototype, machining, finishing, and assembly under one roof.

Frequently Asked Questions

What types of aerospace tooling can M.A.R.'s Engineering manufacture?

M.A.R.'s Engineering manufactures custom aerospace tooling components such as pins, bushings, sleeves, inserts, connectors, shafts, and other precision-machined parts used in fixtures, assemblies, and production tooling. With EDM, Swiss machining, CNC turning, milling, and grinding in-house, the shop can support intricate geometries, hardened materials, and close-tolerance features required for aerospace applications.

How precise are your aerospace tooling capabilities?

Do you handle both prototype and production tooling?

What materials can you machine for aerospace tooling?

Can you produce custom tooling components with complex features?

Do you offer finishing or assembly for aerospace tooling parts?

What quality standards support your aerospace manufacturing work?

How do you help reduce lead times on custom tooling projects?

Need Answers for Your Project?

Talk with our team about tooling requirements and timelines.

Certified & Trusted

Awards and Recognition

ISO compliant certification logo

ISO Compliant

Supports documented quality and traceability.

Mil-1-45208A compliance badge

Mil-1-45208A Compliance

Aligned with inspection system requirements.

Since 1964 trust badge

Since 1964

Long-standing precision manufacturing experience.

Discuss Your Aerospace Tooling Project

Share your drawings, tolerances, materials, and production goals. Our team will review your requirements and help identify the right in-house manufacturing approach.

Contact Us Today

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.