6CNC · Custom machined components
Small-Batch CNC Machining for Custom Parts
6CNC provides small-batch CNC machining for 1–600 custom parts, supporting pilot builds, bridge production, equipment projects, and repeat short runs. We coordinate machining, finishing, and inspection so you can move from a prototype to repeat orders with one manufacturing partner.
- Pilot builds
- Bridge production
- Equipment and spare parts
Why Work with 6CNC?
6CNC combines CNC process selection, finishing, and inspection for low-volume custom parts. Our Shenzhen team helps engineers and buyers balance batch cost, quality requirements, and delivery needs without a mass-production tooling commitment.
A process selected for your part
Our routes include 3-axis and 5-axis milling, CNC turning, mill-turn machining, Swiss machining, and grinding for selected features. We select the route around geometry, quantity, and critical dimensions.
Machining and finishing together
6CNC coordinates machining, finishing, inspection, and selected assembly support according to project requirements. Fewer supplier handoffs help keep drawing revisions and acceptance criteria aligned.
Support for repeat small batches
We retain the approved drawing revision, process route, and inspection requirements for repeat work. Quantity or design changes are reviewed with you before the next batch is manufactured.
6CNC at a Glance
10+ Years
of CNC Machining Expertise
50,000+
Precision Parts Delivered
140+
Advanced CNC Machines
10,000+
Satisfied Clients Worldwide
6CNC reviews orders from one-off parts to batches of approximately 600 pieces, with no fixed CNC machining MOQ. Critical features approaching ±0.002 mm are assessed against material, geometry, setup, and inspection method. First-article reports, CMM or optical measurement, material certificates, and finishing documentation can be agreed for your project. Our Shenzhen team confirms production and global delivery arrangements with your quotation.
When Small-Batch CNC Machining Fits
Use a short production run when you need usable parts without committing to a larger quantity than the project requires.
01
Pilot builds
Evaluate assembly and production requirements with parts made to a controlled design revision.
02
Bridge production
Discuss a machining batch while a longer-term manufacturing route is being prepared.
03
Equipment and spare parts
Order drawing-defined components for custom machinery, maintenance, and product variants.
04
Repeat short runs
Reorder approved parts with the current revision, quantity, and inspection requirements clearly identified.
- Identify whether the batch will be used for evaluation, installed in equipment, or released for customer use. The acceptance requirements should match that purpose.
- For a repeat short run, reference the previous part number and order while explicitly confirming the current specification.
Select the Route Around the Part
Geometry, material, feature relationships, and batch size guide the process. A more complex machine is useful only when it improves the route for your part.
Milling
Review pockets, profiles, holes, and multi-face features for suitable setups and tool access.
Turning and mill-turn
Combine rotational and milled features where this suits the drawing and operation sequence.
Selected secondary operations
Grinding, finishing, and additional checks are included when required and confirmed for the project.
- Features that must align with each other should be clear on the drawing. Their relationship can influence the setup sequence and inspection approach.
- State any restrictions on secondary operations or outsourced finishing in the enquiry so they can be reviewed before the route is agreed.
Understand What Drives Your Batch Cost
A batch price includes preparation as well as machining. Compare total order cost, requirements, and delivery scope instead of looking only at the unit price.
| Review item | What to confirm |
|---|---|
| Programming and setup | Preparation and workholding costs are shared across the ordered quantity. |
| Material and cycle time | Stock size, geometry, material removal, and tool access affect the machining route. |
| Finishing and inspection | Tight features, extra operations, reporting, and surface treatments add work to the batch. |
| Quantity options | Provide alternative quantities when useful so their cost and scheduling implications can be reviewed. |
- Ask for quotations at the quantities you are actually considering. Compare total expenditure and stock requirements as well as the unit price.
- Use the same drawing revision, finish, inspection scope, and delivery terms when comparing quotations. Different assumptions can make apparently similar prices misleading.
Define the First-Batch Acceptance Requirements
Agree on what needs to be checked before production. Identify any first-article approval step in the enquiry rather than assuming it is included.
Controlled inputs
Drawing revision, material grade, quantity, finishing, and critical features.
Inspection scope
Required dimensions, measurement methods, reports, and documents agreed for the order.
Repeat orders
Reference the approved revision and flag any change in design, volume, or acceptance requirements.
- If approval of an initial sample is required before the balance of the batch, define who approves it and which records are needed.
- Clarify whether acceptance is based on specified sampled checks, designated critical features, or another agreed inspection plan. Do not assume every feature is measured on every part.
Materials, Finishing, and Batch Scheduling
Metals and engineering plastics are reviewed against part geometry and application requirements. Material supply, secondary operations, and inspection influence the confirmed schedule.
Material specification
Provide the grade and condition; identify any certification requirement.
Finishing specification
State the treatment, appearance requirements, masking areas, and dimensions affected by coating.
Delivery requirements
Include the required date and delivery destination when requesting the quotation.
- Identify part marking, separation of variants, and packaging needs where these affect receiving inspection or assembly.
- State whether the whole batch is needed together or whether separate deliveries should be quoted. Splitting a shipment may change cost and timing.
Compare Batch Options on the Same Basis
A useful quotation comparison makes the requirements visible. Include these inputs when evaluating quantities or manufacturing routes.
01
One revision, several quantities
Request quantity options against the same controlled files. This isolates the effect of batch size from unrelated specification changes.
02
Preparation and repeat orders
Ask which assumptions apply to the initial order and what needs review for a repeat batch. Future pricing should be confirmed with the new order.
03
Inspection and documentation
Identify required reports, material documents, and approval stages. Compare offers that include the same acceptance scope.
04
Packing and delivery
Specify the destination, part protection, identification, and any split deliveries. These requirements form part of the total order scope.
Small-Batch Machining FAQ
Is there a fixed minimum order quantity?
6CNC has no fixed minimum order quantity for CNC machining. We review one-off prototypes and batches of up to approximately 600 pieces, subject to material, geometry, process, and commercial feasibility.
Will ordering more parts reduce unit cost?
It may spread preparation costs across more parts, but material, cycle time, finishing, and inspection still affect the quotation.
Can I change the drawing after the first batch?
Submit the revised drawing and identify the changes. The machining route, price, timing, and inspection requirements need a new review.
Can you provide first-article inspection?
Yes. 6CNC can provide first-article inspection, dimensional reports, and agreed material or finishing documentation. Include the required checks, report format, and approval point so the scope can be confirmed before production.
Are tight tolerances available on every feature?
No single tolerance applies to every part. 6CNC reviews critical features, including requirements approaching ±0.002 mm, against geometry, material, setup, and measurement method.
Can one batch contain several part variants?
List each part number, revision, material, finish, and quantity separately. Similar-looking components may require different setups or checks; grouping them does not automatically mean identical pricing.
Can the batch be delivered in stages?
Include the requested quantities and dates in the enquiry. Manufacturing, inspection, packing, and shipping arrangements need to be confirmed for each proposed delivery.
Start your project with 6CNC
Request a Batch Quote
Send your drawings and project requirements to 6CNC. Our team will review machining feasibility, material, quantity, finishing, inspection, and delivery needs, then provide a project-specific quotation.