CNC machined part on a machining center

Custom CNC Machining Services

Precision CNC milling and turning for prototypes, low-volume production, and repeat orders, supported by engineering review and controlled inspection.

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CNC Milling and Turning Capabilities

ENSI supports both prismatic and rotational components, allowing customers to source different CNC part types through one manufacturing contact.

CNC Milling

For housings, plates, brackets, fixtures, structural parts, manifolds, and other prismatic components.

  • Maximum suitable work size: up to 2000 mm
  • Metals and engineering plastics
  • Prototype and low-volume production
  • Complex pockets, holes, threads, and machined surfaces
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CNC Turning

For shafts, pins, bushings, sleeves, spacers, threaded components, and other rotational parts.

  • Maximum size: up to Ø400 × 500 mm
  • External and internal turning
  • Grooves, threads, bores, and stepped diameters
  • Prototype and repeat production
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CNC Capacity for Small and Large Custom Parts

From compact precision components to longer machined structures, each project is reviewed against machine travel, workholding, tolerance, material, and quantity requirements before production.

Machine CapacityApproximately 20 CNC machines
ProcessesCNC milling and CNC turning
Maximum Milling SizeUp to 2000 mm for suitable projects
Maximum Turning SizeUp to Ø400 × 500 mm
General ToleranceISO 2768-m unless otherwise specified
Critical FeaturesDown to ±0.01 mm where technically suitable and confirmed during review
Production RangePrototype, low-volume, and repeat orders

CNC Machining Materials

A practical selection of metals and engineering plastics is available for functional prototypes, fixtures, machine components, housings, and production parts.

Aluminum

Light, quick to machine, naturally corrosion-resistant, and well suited to anodizing. Most prototypes should start here unless the application rules it out.

Common grades
6061 · 7075 · 5052 sheet
Typical applications
Housings, plates, brackets, and fixtures
Review notes
As-machined, anodized, and bead-blasted finishes are available.
Explore the material guide

Tolerances Reviewed Before Production

Tolerance requirements are reviewed against part size, geometry, material, surface finish, and inspection method before machining begins.

View Tolerance & Inspection
General Tolerances

ISO 2768-m unless otherwise specified on the drawing.

Critical Dimensions

Tolerances down to ±0.01 mm may be supported on suitable features after engineering review.

Inspection

Critical dimensions are checked during production and before shipment. Inspection records can be prepared when agreed during quotation.

Drawing Requirements

Clearly identify datums, critical dimensions, threads, surface finish, and inspection requirements in the technical drawing.

Surface Finishes for CNC Parts

Machined parts can be supplied as-machined or coordinated with suitable secondary finishing according to material and application requirements.

As Machined Bead Blasting Anodizing Hard Anodizing Powder Coating Polishing Passivation Black Oxide Zinc Plating Nickel Plating Laser Marking

Finish availability, color, appearance, and dimensional impact are confirmed during quotation.

Explore Surface Finishes

When CNC Machining Is the Right Choice

  • Functional prototypes in production materials
  • Low-volume components without tooling investment
  • Fixtures, jigs, brackets, housings, shafts, and machine parts
  • Parts requiring threads, bores, flatness, or controlled interfaces
  • Repeat orders requiring stable drawings and specifications
  • Replacement and custom components for industrial equipment

From CAD File to Finished CNC Parts

A controlled workflow from drawing review to final delivery.

  1. 01 / 04

    Upload Drawings

    Send your CAD files with material, quantity and technical requirements.

    Accepted filesSTEP · STP · PDF · DWG
  2. 02 / 04

    Engineering Review

    Our engineers review tolerances, materials and manufacturability before quoting.

    Review focusTolerance · Material · DFM
  3. 03 / 04

    Production & Inspection

    Parts are machined under controlled processes and inspected against your drawings.

    Quality controlIn-process · Final inspection
  4. 04 / 04

    Packing & Delivery

    Finished parts are protected, packed and prepared for reliable global delivery.

    Final stagePacking · Documents · Shipping
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CNC Machining FAQ

What files should I send for a CNC machining quote?

STEP or STP files work best for milled and turned parts, along with a PDF or DXF drawing showing critical dimensions, tolerances, and finish requirements. SLDPRT, X_T, and IGES are also accepted.

What is the maximum CNC milling size ENSI can support?

Up to 2000 mm for suitable milling projects. Larger or unusual geometries are reviewed individually against machine travel, fixturing, and material.

What is the maximum CNC turning size?

Up to Ø400 × 500 mm. Parts outside this envelope can still be discussed during quotation.

Can ENSI achieve ±0.01 mm tolerances?

Tolerances down to ±0.01 mm are available on suitable critical features after engineering review. Not every dimension on every part can hold this tolerance — general dimensions follow ISO 2768-m unless otherwise specified.

Which metals and plastics can be CNC machined?

Aluminum, stainless steel, mild and alloy steel, brass, and copper, with titanium available on suitable projects after review — plus engineering plastics including POM/Acetal, ABS, nylon, PC, PMMA, PTFE, and PEEK.

Does ENSI support one-off prototypes?

Yes. Single-piece prototypes, low-volume runs, and repeat production all run through the same CNC milling and turning process.

Send One Drawing. Start the CNC Review.

Upload your CAD file and technical drawing with material, quantity, tolerance, and finish requirements. Our team will review the project and respond with the next manufacturing steps.

RFQ · no obligation · from 1 pc Upload CAD for a Quote

Or email sales@ensi-precision.com

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