CNC MACHINING SERVICES
Custom CNC Machining Services for Precision Metal Parts
Get machined aluminum, stainless steel, steel, brass, copper and titanium parts from prototype to low-volume production. Great Material supports CNC milling, turning, 5-axis machining, surface finishing and inspection documentation for OEM engineering teams.
Secure CAD Upload
Submit STEP, STP, IGES, X_T, SLDPRT, PDF or ZIP files.
Metal Materials
Aluminum, stainless steel, steel, brass, copper and titanium.
DFM Feedback
Review wall thickness, pockets, tolerances and finish risk.
Inspection Options
CMM, dimensional report, FAI and material certificates on request.
Prototype to Low Volume
Built for engineering validation, pilot builds and repeat supply.
CNC Milling, Turning and 5-Axis Support for Custom Metal Parts
Use this page to evaluate whether Great Material can quote your metal part before sharing a full production package. Our CNC machining workflow is suited to housings, brackets, shafts, fixtures, heat sinks, plates and small assemblies that need consistent dimensions and documented inspection.
- CNC milling: pockets, slots, flatness-critical plates, housings and fixture components.
- CNC turning: shafts, bushings, pins, spacers, fittings and round components.
- 5-axis machining: multi-face geometry, angled features and complex workholding reduction.
- Secondary operations: EDM, grinding, tapping, finishing, inspection and assembly support.
CNC Machining Capability Snapshot
| Capability | Typical Use | RFQ Notes |
|---|---|---|
| 3-axis CNC milling | Housings, brackets, plates, fixture blocks | Include 3D model and critical 2D dimensions. |
| CNC turning | Shafts, spacers, fittings, bushings | Call out threads, concentricity and surface finish. |
| Tight tolerance review | Bearing fits, sealing faces, locating features | Mark critical dimensions to avoid over-tolerancing. |
| Inspection documents | FAI, dimensional reports, material certs | Select required reports during RFQ. |
Metals We Machine
Choose materials by strength, weight, corrosion resistance, conductivity, finish requirements and cost. If you are not sure which grade fits your design, include the operating environment and target performance in your RFQ.
Typical CNC Machined Parts
Great Material quotes metal parts by drawing, material, quantity, tolerance and finish requirements. The most useful RFQs include both a 3D CAD model and a 2D drawing for critical dimensions.
Housings & Enclosures
Aluminum and stainless housings with pockets, bosses, gasket grooves and cosmetic finishes.
Brackets & Mounts
CNC machined brackets, adapter plates, sensor mounts and robotic support parts.
Shafts & Turned Parts
Turned shafts, spacers, bushings, fittings and threaded cylindrical components.
Fixtures & Tooling Plates
Locating plates, workholding fixtures, test fixtures and assembly tooling.
Heat Sinks
Machined aluminum heat sinks, thermal plates and electronics cooling components.
Precision Plates
Flatness-sensitive plates, manifolds, blocks and equipment mounting components.
Quality Documentation Built Into the RFQ
For production and engineering programs, inspection requirements should be selected before quoting. Great Material can structure RFQs around dimensional inspection reports, first article inspection, material certificates and traceability needs.
- CMM and dimensional inspection: for critical features, fits and datum-based measurements.
- Material certificates: request certificates when material grade, heat or lot traceability matters.
- FAI upon request: useful before pilot builds and repeat low-volume production.
- Surface finish checks: include cosmetic surfaces, Ra targets, masking and coating notes.
RFQ Checklist for CNC Machined Metal Parts
| RFQ Item | Why It Matters |
|---|---|
| 3D CAD file and 2D drawing | CAD defines geometry; drawings define critical tolerances, threads and finish notes. |
| Material and grade | Material affects machining time, finish options, inspection and cost. |
| Quantity and target lead time | Prototype and repeat production quotes use different planning assumptions. |
| Surface finish and inspection documents | Finishes and reports can change lead time, masking, packaging and final inspection. |
CNC Machining Services FAQ
What file formats do you accept for CNC machining quotes?
STEP, STP, IGES, X_T, SLDPRT, PDF drawings and ZIP packages are practical RFQ formats. A 3D model plus a 2D drawing is best for critical dimensions.
Which metals are best for CNC machined parts?
Aluminum is common for lightweight housings and fixtures, stainless steel for corrosion resistance, steel for strength, brass and copper for conductivity or fittings, and titanium for high strength-to-weight applications.
Can I request inspection reports or material certificates?
Yes. Add dimensional reports, material certificates, FAI or surface finish checks to the RFQ so the inspection plan is quoted before production.
How can I reduce CNC machining cost?
Use standard material sizes, avoid unnecessary tight tolerances, simplify deep pockets, keep corner radii machinable and specify only critical inspection points.
Can you support prototypes and low-volume production?
Yes. The page is structured for prototype validation, pilot builds and repeat low-volume metal part supply.
