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Precision CNC Machining Services

Direct engineering support, not a quoting platform. Every project reviewed by a senior machining engineer before you receive a price. 5-axis DMG MORI capacity, ±0.005mm tolerances, ISO 9001:2015.

Written by Wei Zhang, Lead CNC Programmer - 15 years CAMReviewed by Xiaofeng Li, Quality Manager - August 2026

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CNC Machining: Direct Partner vs. Automated Platforms

Factor	Automated Platforms (Xometry, RapidDirect)	PrecisionIndParts Direct
Quoting Process	Instant algorithm - no human review	Engineer-reviewed within 24 hours
Engineering Support	Chat bot / ticket system	Direct contact with your project engineer
DFM Feedback	Automated, generic suggestions	Specific recommendations from experienced machinists
Complex Parts	Algorithm rejects or overprices	5-axis, tight tolerances, thin walls accepted
Low Volume	High minimums ($500-$1000+)	1 piece accepted. Prototypes welcome.
Material Options	Standard catalogue only	Any machineable alloy - including exotics
Communication	Platform-mediated, slow	Direct WhatsApp, email, or phone
Certifications	Varies per supplier	ISO 9001:2015, AS9100D, IATF 16949, NADCAP
Lead Time Accuracy	System-generated, often off	Actual shop capacity-based commitment

For simple, standard parts, an automated platform may suffice. But for precision components with tight tolerances, exotic materials, or complex geometries - you need an engineer, not an algorithm.

CNC Equipment

40+ CNC machines across 3 facilities. All calibrated annually. All operated by experienced machinists.

Machine	Axes	Spindle	Accuracy	Qty
DMG MORI DMU 80	5-axis	18,000 RPM	±0.003mm	5
Mazak VCN	4-axis	15,000 RPM	±0.005mm	8
Haas VF	3-axis	12,000 RPM	±0.01mm	12
Mazak QT Lathe	2+Live-axis	6,000 RPM	±0.005mm	4
Haas ST Lathe	2-axis	4,000 RPM	±0.01mm	2

Materials We Machine

Aluminium

Grades: 6061-T6, 7075-T7351, 2024, 6082

Applications: Aerospace brackets, automotive mounts, medical housings

Steel

Grades: 1018, 1045, 4140, 4340, 8620

Applications: Shafts, gears, structural components, tooling

Stainless Steel

Grades: 303, 304, 316, 17-4PH, 15-5PH

Applications: Medical instruments, food equipment, marine hardware

Titanium

Grades: Grade 2, Grade 5 (6Al-4V)

Applications: Aerospace structural, medical implants, high-performance automotive

Inconel / Superalloys

Grades: 625, 718, 792

Applications: Turbine components, exhaust systems, chemical processing

Engineering Plastics

Grades: PEEK, PTFE, Nylon, Acetal, UHMW

Applications: Bushings, insulators, medical device components

How We Quote & Deliver

You Submit CAD

STEP, IGES, DXF, or PDF. Include material, quantity, and tolerance requirements.

Engineer Reviews

A senior machining engineer reviews your files. DFM feedback provided before quoting.

Quote Within 24h

Detailed quote with price breakdown, lead time, and delivery terms. No surprises.

Production & Ship

In-process inspection. CMM report. Material certs. On-time delivery.

Industries We Serve

Aerospace & Defence

AS9100D, NADCAP

Medical Devices

ISO 13485 compliant

Automotive & E-Mobility

IATF 16949

Oil & Gas

API compliant

Industrial Automation

ISO 9001:2015

Renewable Energy

ISO 9001:2015

Frequently Asked Questions

What is the minimum order quantity for CNC machining?

We accept orders from 1 piece. Prototypes and low-volume production are our specialty. There is no minimum order value.

How quickly can I get a quote?

Most quotes are delivered within 24 hours. Complex 5-axis parts with multiple set-ups may require up to 48 hours. DFM feedback is included with every quote.

What tolerances can you hold?

Our standard machining tolerance is ±0.005mm (0.0002 inches). For critical features, we can hold ±0.002mm with CMM verification. Surface finish down to Ra 0.2µm.

Do you provide material certifications?

Yes. Every order includes material certification (mill certificate), dimensional inspection report, and Certificate of Conformance. Additional documentation available on request.

What file formats do you accept?

STEP (.stp, .step) is preferred for 3D data. We also accept IGES, DXF, PDF drawings, and native SolidWorks files.

Ready for a Real Engineering Review?

Upload your CAD files and our senior engineer will review your project personally. Quote within 24 hours.

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Related Resources

5-Axis CNC Machining→CNC Milling Services→CNC Turning Services→Custom CNC Parts→

Every process we run, and what each one holds →

What the numbers mean

What does ±0.005 mm actually mean for a machined part?

It means a machined feature may land 5 micrometres either side of nominal. For scale, a human hair is about 70 micrometres. On aluminium the part moves more with temperature than the machine does, so a ±0.005 mm callout is really an instruction about the temperature the part is measured at.

·It is the standard linear tolerance we quote, not a limit: ±0.025 mm is the working default on milled features, and ±0.005 mm is what a ground or fine-bored feature holds.
·Thermal movement is the real constraint, and it is the shop floor that decides it: aluminium moves with temperature enough that a part measured warm reads different from the same part measured cold, which is why a ±0.005 mm callout is really a callout about the temperature the part is measured at.
·Two features in the same setup hold their relationship to each other far better than two features made in different setups, so the datum scheme on the drawing decides whether the tolerance is cheap or expensive.
·Below ±0.005 mm the answer is usually a process change, not a tighter promise: grinding, jig boring or a temperature-controlled inspection room rather than a different machining centre.

Basis: Standard tolerance from the claims register (c-24005); ±0.025 mm milled-feature default and the temperature caveat are the 6061-T6 record's own words.

How do I choose an Ra surface finish for a machined part?

Choose the coarsest finish the function allows. As-machined parts on our records land at Ra 1.6 µm typical and Ra 0.4 µm at best, and every step below that adds cost. Sealing faces, bearing fits and sliding surfaces need the finer callout; brackets, covers and non-contact faces rarely do.

·Ra is the arithmetic mean of the profile height over the sampling length. It says nothing about waviness, lay direction or whether a scratch is a scratch, so an Ra number alone does not specify a sealing surface.
·Ra 1.6 µm is the ordinary turned or milled finish and costs nothing extra to hold. Ra 0.4 µm usually means a finishing pass with a smaller stepover or a ground feature, and it is where the cost starts climbing.
·A finish callout on a surface nobody touches is money spent for a number on a drawing. It is the most common over-specification we see on incoming drawings.
·Anodising, plating and passivation change the surface after machining, and anodising builds 5 to 20 µm per surface depending on the process, so the finish and the bore tolerance have to be specified together.

Basis: Finish ranges from the material records (alloy by alloy); anodising build-up from the 6061-T6 record; finish-versus-function from the surface finish tool and the machining guides.