Precision Manufacturing for Demanding Sectors
GMK MACHINING, INC is a fully equipped CNC and manual machining shop specializing in contract manufacturing of complex, high-precision parts. We serve aerospace, defense, and the wider industrial market—delivering tight-tolerance components from all metals and engineered plastics. Our team works from professional engineering drawings and CAD models to prototype, machine, and assemble parts that meet rigorous specifications. Contact us to discuss your project challenges or unique requirements.
01 / What we do
We provide a comprehensive set of machining and fabrication services, designed to meet the exacting standards of advanced industries. Whether you require specialized component manufacturing or rapid prototyping based on engineering files, our multi-process expertise ensures your needs are addressed with precision and reliability.
Utilizing advanced CNC milling centers as well as skilled manual operations, we shape components to the most demanding tolerances. Our shop is configured to handle one-off prototypes as well as mid-volume production runs, offering the flexibility to work with unique part geometries or evolving design requirements. Every stage is guided by your CAD (AutoCAD, Solidworks, and more) to ensure flawless execution and repeatability.
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Our turning capabilities address the creation of shafts, bushings, and highly accurate cylindrical features from a wide array of raw materials. With both CNC and manual lathes, GMK MACHINING, INC can take on high-value single parts as well as batches for aerospace, defense, or general industrial applications. Integration with your engineering drawings assures dimensional consistency and quality across every project.
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Beyond machining, we offer the assembly of complex mechanical parts and subassemblies. This value-added service streamlines your supply chain by delivering not just individual machined components, but finished units, ready for integration into your systems. Our assembly process follows strict quality benchmarks to support applications where dependability is critical, such as aerospace and defense platforms.
Discuss your idea ↗We support early-stage product development with rapid prototyping services based on professional CAD files. Whether your design is in AutoCAD, Solidworks, or other engineering formats, our team transforms digital concepts into functional physical prototypes. This service accelerates design validation, fit testing, and initial assembly evaluation before moving to larger production runs.
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02 / About us
Founded to address the stringent requirements of aerospace, defense, and industry, GMK MACHINING, INC operates a fully modernized machining facility in Lodi, California. Our shop combines CNC technology with expertly maintained manual equipment, enabling us to manage a broad spectrum of projects—ranging from single-part prototypes to production assemblies.
Our experienced team is versed in reading and working from complex engineering drawings and 3D CAD models, ensuring that each component or assembly meets precise technical specifications. We maintain a strong focus on quality and adaptability, ready to work with an extensive list of metals and high-performance plastics depending on your project's needs.
Whether you require end-to-end manufacturing for a complete assembly or simply need a prototype part machined to tight tolerances, we welcome your technical questions and project RFQs. Every engagement is approached with attention to detail, transparent communication, and a commitment to technical excellence.
Start a conversation ↗Our perspective
GMK MACHINING, INC is prepared to work with virtually any metal—aluminum, steel, brass, copper—as well as engineered plastics to suit your industry's technical standards. This adaptability allows us to take on challenging projects for demanding sectors, matching each application’s unique needs with the right material selection and machining strategy.
03 / How to get started
Start by contacting us with your project details, including technical drawings, CAD models, and material preferences. Our team will review your files and requirements to understand the technical scope and clarify project objectives.
Based on the material list, manufacturing processes, and tolerances, we provide feedback, suggest manufacturing optimizations where necessary, and develop a detailed quotation outlining deliverables, timelines, and scope.
Once the scope is confirmed, we move into production: machining, prototyping, or assembly as required. You’ll receive regular communications on progress, and any further design or technical queries are handled promptly throughout the process.
Practical guidance / 01
GMK MACHINING, INC is best suited for clients in aerospace, defense, and specialized industrial manufacturing who require rigorous quality and documentation. We routinely handle technically challenging parts, tight tolerances, and projects demanding reliable, repeatable results.
Practical guidance / 02
To streamline your request, please include as much technical information as possible in your enquiry. The more detail provided upfront, the more efficiently we can assess, quote, and deliver your required components.
Practical guidance / 03
Choosing the right manufacturing partner involves technical fit and clear communication. We recommend prospective clients compare experience with relevant materials, capabilities for complex assemblies, and responsiveness to project adjustments before making a decision.
04 / A little more detail
We focus on supplying precision-machined parts and assemblies to the aerospace, defense, and general industrial sectors. Many of our projects involve tight-tolerance requirements, specialty metals, or demanding application environments typical of these industries.
We regularly accept engineering drawings and CAD files from AutoCAD, Solidworks, and related professional platforms. If you are unsure about your file format, please send us an enquiry or sample file for review and compatibility assessment.
Yes. GMK MACHINING, INC supports rapid prototyping for initial design validation as well as production machining and component assembly for larger scale requirements. Each project is assessed individually to offer the appropriate process and timeframe.
We machine and assemble parts from all conventional metals—such as aluminum, steel, brass, copper—along with a variety of engineered plastics. If your application requires a specialty material, please include the details in your enquiry for further discussion.
Yes, we provide assembly of mechanical parts and subassemblies in addition to our machining services. If your project requires finished, ready-to-integrate units, please specify your assembly requirements at the outset.
Please contact us with your technical drawings, material specifications, and desired quantities. Our team will review your submission, clarify any questions, and prepare a tailored quotation including process, materials, and timelines.
05 / Contact us
To explore a machining project, request a quotation, or clarify our service capabilities, please reach out with your design files or technical questions. We welcome both one-time and recurring enquiries from industry professionals or procurement specialists.
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