Assembly Services Built to Scale
MetalQuest Unlimited delivers CNC machined parts with tight tolerances, verified quality, and consistent lead times. We produce functional components—taking a prototype to production—that fit into real systems, not just marketing slides.
This is U.S.-based precision machining done in our own CNC machining shop. When you work with MetalQuest you get engineering feedback, manufacturing accountability and production that scales without compromising tolerance or turnaround.
Let’s talk. We take prototypes to production, run production, and fix problems other suppliers leave behind.
CNC Machining, Done Right
CNC machining is a subtractive manufacturing process where material is removed from solid metal or plastic stock using computer numerical control (CNC). Toolpaths are generated from CAD files and used to cut parts to exact specifications. CNC machining includes milling, turning, drilling and surface finishing processes.
Materials such as tool steel, aluminum, and PTFE are commonly used in CNC machining because of their reliability and effectiveness in various applications. Unlike additive methods, CNC machining retains full mechanical properties of the stock material. It’s faster than injection molding for small to mid-size runs and far more precise when tolerances matter. Our approach combines standard CNC machines, custom tooling, and automation to maintain repeatability across prototype and production runs.
We don’t just run G-code. Every CNC machining order is reviewed for fixture strategy, tool access, tolerance stackup and long term part stability. That’s how we prevent rework—and keep your team moving.
CNC Machines and Equipment
CNC machines are the backbone of the CNC machining process. These machines use computer-aided design (CAD) software to create precise tool paths and control the movement of the cutting tools. The equipment used in CNC machining includes milling machines, lathes, grinders, and EDM machines. Skilled machinists operate these machines to ensure the parts are manufactured to the highest standards. Coolant and other post-processing techniques, such as anodizing and chromate conversion coating, can also be used to achieve the desired surface finish.
CNC Milling
Our vertical and horizontal 3-, 4- and 5-axis CNC milling machines handle parts with multiple faces, compound angles and fine internal features. We cut tight tolerance slots, bosses, pockets, and profiles while controlling surface integrity and flatness.
We support:
- Complex geometries across structural and sealing faces
- Close parallelism, perpendicularity, and profile callouts
- Fixtures for high-volume flat stock and castings
Our CNC milling capabilities also allow us to handle multiple parts simultaneously, optimizing setup costs and processes by minimizing the need for repositioning.
CNC milling is perfect for:
- Mounting plates, valve blocks, internal frames
- Consumer electronics housings
- CNC parts with critical bore or boss relationships
If your design includes multiple features that require tolerance alignment across faces, we’ll map them to a single setup to ensure alignment and minimize deviation.
CNC Turning
Our CNC turning department supports Swiss-style, dual spindle and live-tooling machines. We run bar-fed components with single-pass processes to minimize handling and maximize repeatability. Minimizing part repositioning can lead to more economical machining operations, especially for complex multi-faceted geometries. We produce:
- Sleeves, bushings, flanges, and shafts
- Parts with cross-holes, threads, or secondary flats
- Tight concentricity and true-position callouts
CNC turning reduces cycle time while improving dimensional control. We run both short batches and long-term repeat orders, tracking each lot internally and documenting performance for repeatable production.
Surface Finishes & Cosmetic Control
We offer both functional and cosmetic CNC machining surface finishes:
- As-machined (125 Ra or better)
- Bead blast
- Anodizing (Type II & Type III)
- Chromate conversion coating
- Powder coating
- Electropolishing
- Zinc, nickel, or tin plating
Surface treatments improve:
- Wear resistance
- Corrosion resistance
- Cosmetic appeal
- Electrical conductivity
We help you match the right finish to your material, end-use environment, and part function. Need help with powder-coated carbon steel? Anodized aluminum with tight threads? Passivated stainless in a medical assembly? We’ve done it.
Materials We Machine
Metals:
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Aluminum Alloys (6061, 7075, MIC-6)
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Stainless Steel (303, 304, 316, 17-4PH)
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Carbon Steel (1018, 1045, 4140)
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Tool Steel, Alloy Steel
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Brass, Bronze, Copper
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Free machining brass and zinc alloys
Materials like PEEK and zinc are also known for their high tensile strength and can be used as metal alternatives in high-performance applications.
Plastics:
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ABS, Nylon 6/6, Delrin, HDPE, PVC
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Polycarbonate, ULTEM, PEEK
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PTFE (Teflon), Epoxy resin
Our team selects CNC machining materials based on structural needs, mechanical properties, exposure to harsh environments and post-machining performance. Need low-friction sliding interfaces? We can help. Need chemical resistance, tight tolerances and machining stability? We’ve got options. Certain thermoplastics and polymers like ULTEMand PEEK are known for their high temperature resistance and are used in aerospace and automotive industries.
Online CNC Machining
We don’t offer instant online CNC machining quotes because custom parts aren’t bought like office supplies. But you can send us your CAD file and we’ll:
- Review manufacturability (no generic automation)
- Quote based on actual tooling and material cost
- Provide realistic lead times
- Recommend ways to reduce CNC machining service costs
To get started, select your material from the dropdown in our quoting system and upload your custom request.
We support STEP, IGES, SLDPRT, and Parasolid files. Upload a drawing with tolerances and callouts, and we’ll quote the actual part, not a theoretical model.
CNC Machine Shops
CNC machine shops are specialized facilities that offer custom manufacturing services. They have a range of CNC machines and equipment to handle complex designs and high-volume production. Manufacturing partners work closely with clients to ensure the parts meet industry standards and requirements. CNC machining is used in aerospace, automotive, and consumer goods. The ability to achieve precise tolerances and surface finishes makes CNC machining ideal for producing critical parts like helicopter rotor blades and connectors.
Industries We Serve
We machine CNC parts for:
- Agricultural equipment
- Rail and heavy transit systems
- Defense and military systems
- Consumer electronics
- Fluid power and hydraulic systems
- Medical prototypes
- Oil and gas sealing systems
We work with custom metal and plastic parts for products that get tested in the field—not just on paper. Materials like cast iron and steel are commonly used in industrial applications due to their strength and durability, making them perfect for creating robust components in heavy-duty machinery and structural elements.
Custom Manufacturing
Custom manufacturing is a big part of CNC machining services. Clients can upload their CAD designs and get a quote for the manufacturing process. Our online CNC machining platform offers fast lead times, secure and confidential uploads, and communication with the manufacturing team. EDM and other machining techniques allow for complex parts with high precision and accuracy. Plus, we can machine composites to meet specific requirements. By choosing the right CNC machining service, clients can get the benefits of custom manufacturing: faster lead times and better product performance. Click on the resources and submit your design for a quote to learn more about the design guide and tips for CNC machining.
Quality Control & Documentation
Every CNC machining order goes through:
- In-process inspection at each setup
- Final part validation using CMM, gauges and comparator
- Lot traceability (default on production jobs)
- Documentation: CoC, FAIR, material certs, and finish certs available
Inspections are key to maintaining high manufacturing standards and ensuring CNC machined parts are accurate and good.
We work with customers who need full quality control, not just “parts that pass”. Our inspection team works alongside our programmers and machinists, not after them.
Frequently Asked Questions on CNC Machining Services
How do I know your CNC machined parts will work in the field, not just pass inspection?
Can you run both prototypes and production parts using the same process?
How do you hold precision tolerances across high volume runs?
Do you handle assemblies where multiple machined parts need exact alignment?
Do you machine advanced materials like spring steel, PEEK, or epoxy resin with tight specs?
How do you verify material and finish integrity on critical components?
Can you help redesign parts that are too expensive or hard to machine without changing the function?
Do you machine both plastic and metal parts for integrated assemblies?
Can you guarantee the same part quality across repeat CNC machining orders?
Why MetalQuest?
We use machines for our purposes, not just to print. If you’ve had to rework or troubleshoot “in-spec” parts, you know that hitting a number isn’t the same as delivering a working component. We focus on what your part has to do—not just what it measures.
Let’s Build It Right
We don’t sell by the pound or the click. We machine CNC parts to print, to tolerance and to your schedule. No vague specs. No soft deadlines.
Send us your files. We’ll tell you what we can make, how long it’ll take and what it’ll cost. At the start of a CNC machining project, initial expenses for setup, tool loading and programming can be high but these costs can become more economical over time with multiple parts produced using the same setup.
If we can’t do it—we’ll say that, too.