Precision-machined aluminum component on a granite inspection plate
CNC Machining — Contract Manufacturing

Contract Manufacturing —
Precision CNC Machining from Mexico

Precision-machined components from Monterrey, Mexico — milling, turning, EDM, sheet metal, and finishing. For U.S. OEMs who need tight tolerances, documented quality, and 25–45% landed cost savings over domestic.

5 Core Processes
10 Industries Served
25–45% Landed Cost Savings
24 hrs Quote Response
Precision Components, Documented to Your Spec

Contract manufacturing is the fabrication of precision components and parts — machined from metal or plastic stock to your drawings, tolerances, and quality requirements. It covers everything from a single prototype to recurring production runs of thousands of parts per month.

What GPW Does for You

GPW manages precision machining for U.S. OEMs through a vetted network of Monterrey machine shops. We own the engineering, quality, and delivery — you sign one contract with one accountable partner, not a list of shops to chase. The network means scalable capacity without a single-shop bottleneck.

Every project starts with a free DFM review. Before anything goes into production, our engineers analyze your design for manufacturability — identifying tolerance risks, recommending material alternatives, and flagging geometry that drives unnecessary cost.

You get finished parts — machined across the network, inspected to GPW's quality standard, documented, and shipped to your dock.

From Raw Stock to Finished Part

5 Core Machining Services

GPW's Monterrey network covers five core machining processes. Most projects use one or two; complex programs combine three or more — all delivered under GPW quality governance and a single point of accountability. The tolerances and processes below reflect what the vetted network delivers.

01
CNC Milling Complex geometries, pockets & contours
Tolerance ±0.001"
Capability 3 to 5-axis

3-axis, 4-axis, and 5-axis milling for structural brackets, housings, manifold blocks, and fixture plates. Built for parts that demand tight geometry and repeatability across production runs.

02
CNC Turning Cylindrical parts & live tooling
Tolerance ±0.0005"
Capability Live tooling

Precision lathe work for shafts, pins, fittings, bushings, spacers, connectors, and threaded components. Live tooling available for combined turning and milling in a single setup.

03
Wire EDM Where conventional cutting can’t reach
Tolerance ±0.0001"
Materials Hardened steel, carbide

Electrical discharge machining for hardened tool steel, tungsten carbide, and complex profiles. When your part demands precision in the hardest materials, EDM delivers what milling and turning cannot.

04
Sheet Metal Fabrication Cut, formed, welded & finished
Gauges 24ga to 1"
Processes Laser, bend, weld

Laser cutting, CNC bending, punching, and welding across steel, stainless, aluminum, copper, and brass. Enclosures, brackets, panels, guards, and chassis delivered ready for assembly.

05
Surface Finishing Complete parts, ready to install
Finishes 8+ types
Includes Anodize, plate, coat

Anodizing, powder coating, plating, passivation, heat treatment, bead blasting, electropolishing, and laser marking. You receive complete parts — machined, finished, inspected, and ready to install — not raw stock that needs another vendor.

Engineering Support

Free DFM Review on Every Project

Most shops quote what you send. If your design has a feature that triples cycle time, you find out when the invoice arrives. GPW reviews every design before quoting — checking wall thickness, radii, tolerances, material selection, and number of setups. Then we tell you where to save money without sacrificing function.

This is not automated software feedback. It is an engineer reviewing your part and giving you specific, actionable recommendations — at no cost.

Metals & Engineering Plastics

Materials Our Network Machines

GPW's vetted Monterrey network machines the metals and engineering plastics your application demands — and GPW owns the material selection and DFM guidance behind every choice. Not sure which material is right? Our engineers recommend the best option during your free DFM review.

Metals
Aluminum 6061 Aluminum 7075 Steel 1018 Steel 4140 Stainless 304 Stainless 316 Stainless 17-4PH Titanium Gr. 2 / 5 Brass 360 Copper 101 / 110 Bronze 932 Tool Steel D2 / A2 / H13
See all metals with grades and properties
Plastics
Delrin / Acetal PEEK Nylon 6/6 PTFE / Teflon Polycarbonate ABS Acrylic UHMW-PE Ultem / PEI Garolite G-10 Torlon PVC Polypropylene
See all plastics with grades and properties
Multi-Industry Precision

Industries We Serve

Precision machining for OEMs across the ten industries we serve. Each industry brings its own materials, tolerances, certifications, and documentation requirements — GPW adapts to yours. Every industry page covers both machining and in-house assembly.

Aerospace & Defense Titanium, Inconel, 7075 aluminum. Full traceability and audit-ready documentation built to the requirements your aerospace program defines. See Aerospace & Defense Automotive Prototype through production. Steel, aluminum, brass. PPAP-ready documentation built to the requirements your automotive program defines. See Automotive Medical Devices Surgical and instrument components. 316 stainless, titanium, PEEK. Lot traceability and documentation built to the requirements your medical program defines. See Medical Devices Industrial Equipment Gears, shafts, housings, fixtures. Steel, bronze, aluminum. One-offs through recurring production runs. See Industrial Equipment Energy Power-generation and renewables hardware. Stainless, aluminum, and specialty alloys with full material documentation. See Energy Oil & Gas Downhole tools, fittings, valve bodies. Inconel, 316 stainless, PEEK. NACE-conformant materials and material test reports. See Oil & Gas Telecom RF and 5G hardware, cabinets, chassis. Aluminum, copper, brass — machined, then assembled in-house. See Telecom Electronics Heat sinks, enclosures, connectors, housings. Aluminum, copper, brass for general and industrial electronics. See Electronics AI & Server Rack Rack chassis, cold plates, brackets. Aluminum and copper for data-center compute and GPU integration. See AI & Server Rack Appliances & White Goods Brackets, panels, housings at volume. Steel, stainless, and aluminum — formed and finished. See Appliances
The Nearshore Advantage

Why Manufacture in Mexico?

25–45% Landed Cost Savings vs U.S.
2 hrs From Texas
CST Same Timezone
USMCA Tariff Advantage

Manufacturing in Mexico is not offshoring. It is nearshoring — same continent, same timezone, same trade agreement. Your parts are machined 150 miles from Texas, not 8,000 miles across an ocean. Our vetted Monterrey shops run the same caliber of equipment and hold to the same standards your U.S. suppliers do. The difference is landed cost.

See the Full Data See the Full Data
Frequently Asked Questions

CNC Machining, Answered

How does GPW deliver CNC machining if it doesn’t own the machines?

GPW manages production through a vetted network of Monterrey machine shops. GPW owns the engineering review, quality governance, material sourcing, and delivery — you sign one contract with one accountable partner. The network gives you scalable capacity without the bottleneck of a single shop.

What tolerances and processes can the network hold?

The vetted network routinely holds tolerances to ±0.0001" on wire EDM and ±0.0005" on turned parts, across milling, turning, EDM, sheet metal, and finishing. GPW matches each part to the right shop and process during the free DFM review, so your tolerance is engineered in from the start.

What does the free DFM review include, and what does it cost?

An engineer reviews your design before quoting — checking wall thickness, radii, tolerances, material selection, and setup count, then recommending changes that cut cost without sacrificing function. It is a real engineer, not automated software, and it is free on every project with no obligation.

How much can nearshoring to Mexico actually save?

Our 2026 landed-cost study, triangulated from eight sourced datasets, puts savings at 25–45% versus U.S. domestic machining, depending on part complexity and volume. The figure reflects total landed cost — material, machining, finishing, and freight — not just a headline labor rate.

What materials can GPW machine?

Metals from 6061 and 7075 aluminum through 4140 steel, 303/304/316 and 17-4PH stainless, titanium, brass, copper, bronze, and tool steel; engineering plastics from Delrin and PEEK to Ultem, PTFE, and G-10. If you are unsure, the DFM review recommends the best material for your application.

Is there a minimum order, and how fast is a quote?

There is no minimum order — GPW machines single prototypes through recurring production runs. Quotes are returned within 24 business hours, and an NDA is available before you submit any files. Upload a CAD file or drawing to start.

Ready to Get Started?

Tell us about your project. Upload a CAD file or drawing, describe what you need, and we respond within 24 business hours with pricing and a free DFM review — at no cost and no obligation.

No minimum order · NDA available · sales@gpw-solutions.com

Featured Insight

The Real Cost of Nearshoring CNC to Mexico

Forget the hand-wavy "60% savings" claims. Our 2026 study triangulates eight Tier 1 sources to show what landed cost actually looks like, broken out by part complexity.

Cost Study · April 2026

Mexico vs US CNC Machining Cost: A 2026 Total Landed Cost Study

8 sourced datasets · downloadable XLSX cost model · interactive savings calculator.

Read the study
25–45%
Landed Cost Savings

Need assembly, not just parts?

GPW's in-house Assembly & Integration capability turns components into finished, tested products — box build, cable harness, system integration, and testing.

See Assembly & Integration See Assembly & Integration