Custom CNC Milling Services for Precision Parts
Upload your drawing or 3D model for custom metal, plastic, composite and machinable-ceramic parts. We support prototypes, low-volume orders and repeat production with drawing-based inspection.
- Custom CNC-milled parts
- Tolerances down to ±0.002 in
- Prototype and batch production
- Critical dimensions inspected
Choose the Right CNC Milling Process
Select the axis configuration according to feature access, part geometry and setup requirements.
3-Axis CNC Milling
For plates, brackets, housings, pockets and features reached from one primary direction.
View 3-Axis Milling →
4-Axis CNC Milling
For cylindrical parts, side holes, slots and circumferential features with fewer reorientations.
View 4-Axis Milling →
5-Axis CNC Milling
For compound angles and multi-face parts using 3+2 positioning or simultaneous five-axis motion.
View 5-Axis Milling →CNC Milling Materials
Select metals or engineering plastics, then compare each material's characteristics, service environment, common parts, grades and finishing options.
Final material, temper, filler, certification and finish are confirmed against the drawing, service conditions and supplier data sheet.
CNC Milling Capabilities and Design Guidelines
Select the machining route by part geometry, tool access and setup strategy.
| Process Factor | 3-Axis | 4-Axis | 3+2-Axis | 5-Axis |
|---|---|---|---|---|
| Cutting motion | X, Y and Z linear motion | X, Y and Z plus one rotary axis | Rotary axes index and lock; X, Y and Z perform the cut | All five axes move during cutting |
| Best-fit geometry | Plates, pockets, slots and prismatic parts | Radial holes and cylindrical features | Angled holes and multiple fixed orientations | Continuous contours and freeform surfaces |
| Setup and access | Efficient for directly accessible faces | Reduces reclamping around the workpiece | Reaches angled faces with fewer setups | Maintains tool orientation on complex surfaces |
| Nominal work envelope | Up to 2000 × 1000 × 1000 mm | Up to 1500 × 1000 × 800 mm | Up to 1500 × 1000 × 1000 mm* | Up to 1500 × 1000 × 1000 mm* |
*Multi-axis capacity varies with rotary angle, fixture height and tool clearance.
Machining and Inspection Baseline
Drawing specifications take precedence.
Four Practical DFM Checks
Internal Radii
Use the largest practical radius to improve tool rigidity and reduce machining time.
Walls and Deep Pockets
Avoid thin walls and excessive depth to reduce vibration and distortion.
Threads and Holes
Specify the thread standard and depth. Review holes deeper than 3–4×D.
Datums and Inspection
Define functional datums and apply tight tolerances only to critical features.
CNC Milling Process & Quality Control
Drawing requirements are reviewed before production and verified with suitable inspection equipment before shipment.
DFM & Programming
Review geometry, datums, tolerances and tool access before creating toolpaths.
Workpiece Setup
Prepare stock, fixtures, tools and machining coordinates.
CNC Milling
Run the approved program with controlled tooling, cooling and in-process checks.
Inspection
Verify critical dimensions with gauges, optical equipment or CMM.
Finish & Delivery
Complete approved post-processing, protection, labeling and packing.
CNC Milling Applications
Precision milling supports functional parts across demanding industrial applications.
Aerospace
Lightweight brackets, housings, structural components and engine-related parts.
Automotive
Powertrain housings, fixtures, EV components and development parts.
Mold & Die
Mold inserts, cavities, cores, electrodes and precision tooling components.
Electronics
Heat sinks, enclosures, device frames and precision mounting features.
Medical Equipment
Instrument parts, device housings, fixtures and non-implant components.
CNC Milling FAQ
What controls achievable CNC milling tolerance?
Material stability, feature size, wall thickness, datum strategy, tool access, setup count and inspection method all affect tolerance. Critical dimensions should be explicitly defined on the drawing.
What is the difference between CNC milling and 3D printing?
CNC milling removes material from solid stock and suits precision metal or rigid-plastic parts. 3D printing builds parts layer by layer and better supports some internal or highly complex forms.
When should 4-axis or 5-axis milling be used?
Use multi-axis machining for angled, contoured or multi-sided features when fewer setups improve access, consistency or cycle time.
What files are required for a CNC milling quote?
Send a STEP model and a 2D drawing for critical tolerances, threads, roughness and inspection requirements. Include material, quantity and finish.
Which materials require a special machining review?
Flexible elastomers, filled engineering plastics, abrasive composites and brittle machinable ceramics require grade-specific tooling, fixturing and edge-quality review.
Upload Your CNC Milling Drawings
Send the drawing, material, quantity, tolerances and finish requirements. Our engineers will review manufacturability and provide a clear production quote.
Upload Drawing for a Quote