Precision CNC-milled metal and plastic parts for housings, plates, brackets, fixtures, structural components, and custom equipment—from one-off prototypes to repeat production.
Your drawings remain secure and confidential.
STEP · STP · IGES · X_T · SLDPRT · PDF · DXF
CNC milling is suited to components that require controlled faces, pockets, holes, threads, mounting positions, and multiple machined surfaces.
Each milling project is reviewed against part size, workholding, material, geometry, tolerance, and inspection requirements before production begins.
| CNC Department | Approximately 20 CNC machines across ENSI's milling and turning capacity |
| Maximum Milling Size | Up to 2000 mm for suitable projects |
| Materials | Common metals and engineering plastics |
| General Tolerance | ISO 2768-m unless otherwise specified |
| Critical Features | Down to ±0.01 mm where technically suitable and confirmed during review |
| Order Range | One-off prototypes, low-volume orders, and repeat production |
| Project Review | Part size, geometry, datum strategy, workholding, and tolerance are reviewed before production |
Maximum part size and tightest achievable tolerance are independent capabilities, each confirmed individually during project review — not every large part qualifies for ±0.01 mm, and not every tight-tolerance feature requires a large part.
For mounting plates, machine panels, fixture bases, structural plates, and parts requiring controlled faces and hole patterns.
For enclosures, equipment housings, manifolds, brackets, and components requiring pockets, bores, threads, and mounting features.
For parts requiring features on several faces. The machining setup and number of operations are confirmed during engineering review.
Complexity, accessibility, internal corner radii, tool reach, and workholding requirements can affect machining strategy and lead time.
Material selection affects machinability, stability, strength, finish, corrosion resistance, and final cost. ENSI reviews the selected grade against the drawing and application requirements.
Specific grades, certifications, and alternative materials must be confirmed during quotation.
Tolerance, datum, material, surface finish, and inspection requirements should be identified clearly before production.
ISO 2768-m applies unless otherwise specified or agreed.
Tolerances down to ±0.01 mm may be supported on suitable features after technical review.
Clearly identify functional datums, positional requirements, flatness, perpendicularity, and mating surfaces where relevant.
Identify critical dimensions and any required inspection records during quotation.
Applying tight tolerances only to functional features can reduce machining time, inspection effort, and unnecessary cost.
View Tolerance & InspectionMilling tools create internal radii. Sharp internal corners usually require an alternative process or design change.
Deep pockets may require longer tools, multiple operations, or revised geometry.
Thin walls may move or vibrate during machining, especially in softer metals and plastics.
Very deep holes and inaccessible features may require additional operations or specialist tooling.
Specify thread standard, size, depth, and whether the thread is internal or external.
Leave suitable surfaces for secure workholding where possible, especially on thin or irregular parts.
Upload both a 3D CAD model and a 2D technical drawing when the project includes critical tolerances, threads, finishes, or special notes.
Milled parts can be supplied as-machined or coordinated with suitable secondary finishing according to material, function, and appearance requirements.
Finish availability, appearance, masking, color, and dimensional impact are confirmed during quotation.
Functional metal or plastic parts for fit checks, assembly testing, and design validation.
Flexible quantities for pilot builds, bridge production, specialist machinery, and limited-demand components.
Stable drawings, confirmed material, controlled revisions, and repeat production planning.
One drawing revision · Confirmed material · Clear inspection requirements
Provide the model, material, quantity, tolerance, and finish requirements.
Part size, geometry, workholding, tolerance, and manufacturing requirements are checked.
The part is programmed, set up, machined, and checked during production.
Critical requirements are checked before secure packing and shipment.
Up to 2000 mm for suitable milling projects. Larger or unusual geometries are reviewed individually against machine travel, fixturing, and material.
Yes, for suitable projects. Size, weight, workholding, and geometry are reviewed together during quotation to confirm feasibility.
Tolerances down to ±0.01 mm may be supported 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.
ISO 2768-m applies to dimensions that are not otherwise toleranced on the drawing.
Aluminum, stainless steel, mild and alloy steel, brass, and copper, with titanium available on suitable projects after review.
POM/Acetal, ABS, nylon, polycarbonate, PMMA, and PTFE, with PEEK available on suitable projects after review.
Yes. Single-piece prototypes run through the same milling process as low-volume and repeat-production orders.
Yes. ENSI supports pilot builds, bridge production, and repeat orders with stable drawings, confirmed material, and controlled revisions.
STEP or STP files work best for milled parts, along with a PDF or DXF drawing showing critical dimensions, tolerances, and finish requirements. SLDPRT, X_T, and IGES are also accepted.
Yes, whenever the project includes critical tolerances, threads, finishes, or special notes — the 2D drawing carries information a 3D model alone cannot convey.
Yes. As-machined parts can be coordinated with finishing such as anodizing, powder coating, plating, passivation, or laser marking, confirmed at quotation.
CAD model, technical drawing, material, quantity, tolerance requirements, and finish requirements. Any critical dimensions or inspection requirements should be clearly marked.
Upload your CAD model and technical drawing with material, quantity, tolerance, finish, and inspection requirements. ENSI will review the project and confirm the next manufacturing steps.