Large Part CNC Machining Services
Large part CNC machining for structural components up to 1000mm, holding ±0.005mm per feature. Custom fixtures and thermal control, no MOQ, and 50+ metals and plastics.
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1000mm
Max Part Size
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±0.005mm
Feature Tolerance
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3 Days
Fastest Prototype
Large CNC Machining for Structural Components
DEK machines brackets, housings, frames, and structural plates up to 1000mm that exceed a standard job shop’s capacity. With no minimum order quantity, a single large prototype gets the same engineering review as a full production order.
Large CNC machining at this scale lives or dies on workholding and thermal control. Send your drawing and our engineers confirm machining envelope and fixture setup before you commit; contoured parts move to 5-axis machining. Prefer a direct conversation? Talk with our experts.
Why DEK for Large Part Machining
Large structural parts need a partner with scale, process discipline, and certified quality. Here is what DEK brings to every order.
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20+ Years of Machining
More than 20 years in precision machining, with fixture design and cut sequencing refined on heavy, oversized workpieces.
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Proven Production Scale
DEK runs 1.2M+ parts annually for 2300+ global OEM clients, from single large prototypes to repeat production orders.
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98.6%+ On-Time Delivery
A 98.6%+ on-time delivery rate, with prototypes as fast as 3 days and shipping as fast as 1 day once parts are complete.
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Certified Quality
Quality runs under ISO 9001, AS9100D, and ISO 13485 certifications obtained through TÜV, with no MOQ on any order.
Engineering Review Before Quoting
Our engineers check every drawing against our machining envelope and fixture setup before quoting. Positional accuracy across a full span is confirmed on your actual drawing, not assumed from a spec sheet.
Large Part Capacity & Precision
Size range, tolerances, inspection stages, and order terms for large structural parts, confirmed on your drawing before quoting.
Large Part CNC Machining vs. Other Processes
Choose large part machining when size and mass exceed standard capacity; move to 5-axis when contours or compound angles dominate.
| Criteria | This ProcessLarge Part CNC Machining | 5-Axis CNC Machining | Standard CNC Machining |
|---|---|---|---|
| Best for | Structural parts to 1000mm | Contoured, compound angles | Parts in standard capacity |
| Typical tolerance | ±0.005mm per feature | ±0.01mm profile | Per drawing |
| Workholding | Custom fixtures per project | Single setup | Standard vises |
| Main risk managed | Sag, chatter, thermal drift | Repositioning error | Routine setups |
| Choose when | Part exceeds job-shop size | Blended fillets, profiles | Part fits a standard vise |
Large Parts for Demanding Industries
We machine large structural parts for aerospace, industrial equipment, energy, and robotics, with the same inspection stages in every sector.
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Aerospace
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Medical
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Automotive
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Robotics
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Semiconductor
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Electronic
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Telecom
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Drone & UAV
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Energy
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Oil & Gas
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Marine
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Industrial Equipment
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Construction
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Agriculture
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Consumer Products
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Military & Defense
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Mining
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AerospaceNon-flight-critical brackets, cabin hardware and fittings under AS9100D, in 7075 aluminum, Ti-6Al-4V and Inconel 718, with FAI.Learn More -
MedicalInstrument shafts, handles and cannulas in 316L stainless, titanium and PEEK under ISO 13485, with lot traceability as standard.Learn More -
AutomotivePrototype and low-to-mid-volume sensor housings, valve bodies and shafts in aluminum, 4140 and 4340 alloy steel, stainless and brass.Learn More -
RoboticsJoint housings, harmonic drive flanges and gripper fingers in aluminum and hardened steel, with 5-axis milling in one setup.Learn More -
SemiconductorChamber components, wafer handling fixtures and vacuum flanges in 6061 aluminum, 316L, PEEK and Kovar, with burr-free edges.Learn More -
ElectronicConnector bodies, heat sinks, RF shields and precision pins in aluminum, brass and copper, held to ±0.01 mm on contact features.Learn More -
TelecomWaveguide components, filter housings and RF enclosures in aluminum and copper alloys, with silver or nickel plating for conductivity.Learn More -
Drone & UAVMotor mounts, gimbal frames and landing gear fittings in 7075 aluminum, titanium and magnesium to cut weight without losing stiffness.Learn More -
EnergyBattery end plates, busbars, inverter housings and fuel-cell fittings in aluminum, copper and stainless, machined flat and burr-free.Learn More -
Oil & GasValve components, manifold blocks, downhole tool parts and flanges in 4140, 17-4 PH, duplex 2205 and Inconel, with hardness specs.Learn More -
MarinePropeller shafts, pump parts and deck hardware in 316 stainless, bronze and aluminum bronze, chosen first for corrosion resistance.Learn More -
Industrial EquipmentGripper plates, linear guide mounts, cam followers and machine frames in aluminum and steel, with fixtures kept on file for repeats.Learn More -
ConstructionStructural brackets, anchoring hardware and hydraulic fittings in mild steel, alloy steel and aluminum, zinc plated or powder coated.Learn More -
AgricultureGearbox housings, shafts, sprayer nozzle bodies and sensor mounts in cast iron, steel and stainless for abrasion and moisture.Learn More -
Consumer ProductsKnobs, handles, enclosure parts and audio hardware where the machined surface shows, anodized, bead blasted or polished to sample.Learn More -
Military & DefenseOptical mounts, enclosures and accessory rails in aluminum, steel and titanium, with material certification and FAI reports.Learn More -
MiningWear plates, bushings, crusher components and hydraulic fittings in hardened alloy steel, bronze and stainless for dust and vibration.Learn More
Oversized Parts and Challenges We Solve
Large CNC parts shift, sag, or drift if fixturing and heat are not controlled. These are the geometries and problems we handle.
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Large Brackets
Heavy-duty brackets up to 1000mm, held rigid by custom fixtures through every operation.
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Housings & Enclosures
Corrosion-resistant or lightweight housings for process equipment and machines.
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Frames & Machine Bases
Structural frames and heavy machine bases sized beyond a standard job shop's capacity.
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Structural Plates
Large plates checked for flatness by CMM after cut sequencing that limits heat buildup during roughing.
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Complex Large Contours
Blended fillets and compound angles cut on 5-axis machines in one setup to hold profile.
Common Challenges We Handle
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Workpiece Sag & Chatter
We build custom fixtures matched to each part's mass and geometry instead of forcing it into standard vises.
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Thermal Drift
Coolant strategy and cut sequencing limit heat during long roughing cycles; finish passes run once the part has stabilized.
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Accuracy Over 1000mm
Machines are sized to hold tolerance across the full part length, not just near the chuck or vise; full-span accuracy is confirmed in review.
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Heavy Part Capacity
Weight capacity depends on machine and fixture. Send dimensions, material, and estimated weight so engineers confirm fit before quoting.
Certified Quality on Large Parts
Large parts run under ISO 9001, AS9100D, and ISO 13485 certified quality management.
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AS9100DAerospace Quality Management System
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ISO 9001:2015Quality Management Standard
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ISO 13485Medical Devices Quality Management
50+ Metals and Plastics for Large Parts
Material choice on a large part comes down to weight, resistance, and the load it carries in service. Pick the right one for your frame.
Engineering Plastics
Need another material for a large part? Ask our engineers.
View AllHow to Order Large Machined Parts
Large Part Machining FAQs
Answers on cost, weight, shipping, and tolerance for oversized CNC parts.
Request a Quote for Large Part CNC Machining
Send 2D/3D drawings with dimensions and material specs; engineers confirm fit before quoting. See what drives CNC machining rates.
- Parts up to 1000mm, no MOQ
- ±0.005mm per feature, ±0.01mm 5-axis
- Prototypes as fast as 3 days
- Shipping as fast as 1 day
- ISO 9001, AS9100D, ISO 13485 quality
Ready to Scale Your Project?
Get started with a stable process and controlled quality. Let's discuss your project.
