Custom CNC Milling and Turning Services-Hongming Sheng

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Our Service

We specialize in sheet metal fabrication, CNC machining, metal stamping, welding, and assembly. Our one-stop support helps save time, reduce costs, and improve efficiency.

our factory operates under an ISO 9001:2015 quality management system to ensure consistent quality and reliable delivery.

Custom CNC Milling and Turning Services

One CNC Project, Two Core Machining Processes

Hongming Sheng provides custom CNC milling and turning services for OEM parts that require flat surfaces, pockets, holes, profiles, diameters, bores, threads, grooves, or a combination of these features.

Depending on the part geometry, our engineering team can review whether milling, turning, or a combined machining route is more suitable.

Email:info@hms1688.com

Send Drawing & Get Quote

CNC Milling vs. CNC Turning

CNC MILLING

Best for Prismatic & Multi-Face Parts

● Flat and angled surfaces

● Pockets and cavities

● Slots and profiles

● Hole patterns

● Mounting faces

● Multi-side machining

CNC TURNING

Best for Cylindrical Components

● Outside diameters

● Internal bores

● Shafts and sleeves

● Grooves and shoulders

● Internal / external threads

● Tapers and cylindrical profiles

Which Process Fits Your Part?

Mostly Round GeometryCNC turning is often the primary process.

Multiple Flat FacesCNC milling is generally more suitable.

Pockets & Complex ProfilesMilling provides greater access to non-rotational features.

Threads & DiametersTurning may be more efficient for rotational features.

Round Part + Side FeaturesTurning and milling may be combined in the same project.

When Milling and Turning Are Combined

Many industrial components are not purely milled or purely turned.

For example, a cylindrical housing may first require turning for its outside diameter and bore, followed by milling for flats, side holes, slots, mounting features, or connector interfaces.

● Turn main diameters and bores

● Mill flats or mounting faces

● Drill cross holes

● Add threaded or locating features

● Complete secondary finishing as required

Typical Parts for Combined CNC Machining

Equipment HousingsRound or block-type housings with bores, mounting faces, and connector features	Shaft ComponentsTurned shafts with milled flats, slots, keyways, or cross holes	Adapters & FittingsThreaded components with additional mounting or interface features
Bushings & SleevesPrecision cylindrical parts with side holes or custom profiles	Automation PartsLocating components, sensor mounts, support blocks, and machine interfaces	Custom OEM PartsDrawing-based components requiring multiple machining operations

Materials We Machine

AluminumCommon for lightweight housings, brackets, fixtures, and equipment components

Stainless SteelSuitable for corrosion-resistant mechanical and industrial parts

SteelUsed for structural, mechanical, shaft, and tooling components

Brass & CopperUsed for fittings, electrical parts, adapters, and specialty components

From Drawing to Machining Plan

Step 1Review — Geometry, material, tolerance, finish, and quantity

Step 2Process Split — Determine which features should be milled and which should be turned

Step 3Setup Planning — Review workholding, tool access, machining sequence, and secondary operations

Step 4Machining — Milling, turning, drilling, threading, and required secondary processes

Step 5Inspection — Check critical dimensions according to agreed drawings and specifications

Design Details That Affect CNC Cost

● Tight Tolerances:Apply tighter control mainly to functionally critical dimensions.

● Deep Pockets:Long tool reach may increase machining difficulty.

● Small Internal Radii:Tool diameter affects the minimum practical internal corner radius.

● Multiple Setups:Features on many orientations may require additional workholding or multi-axis machining.

● Surface Finish:Cosmetic or special finishing requirements should be defined before quotation.

Quality & Engineering Support

DFM ReviewEvaluate tool access, geometry, tolerances, and machining feasibility

Critical FeaturesIdentify important bores, threads, fits, surfaces, and interfaces

InspectionCheck specified dimensions according to agreed drawing requirements

DocumentationMaterial and inspection documentation available when specified

ConfidentialityCustomer drawings and technical files are treated as confidential; NDA support is available

Need CNC Milling, Turning, or Both?

Send your 2D drawing, 3D CAD file, material, finish, quantity, and critical tolerance requirements. Our engineering team can review the geometry and recommend a suitable milling and turning process route.