CNC Machining Shop Parts
Critical dimensions are measured on Hexagon CMMs, fine edges and small features under a KEYENCE laser microscope, hardness with a micro-Vickers, and coating thickness with a Fischer gauge. Each measurement is tied to the part and the lot. For production runs this is sampling against a control plan; for critical features it is per-part where the drawing demands it.
| Instrument | Measures | Catches |
|---|---|---|
| Hexagon CMM | Geometry and critical size | Size and position outside tolerance |
| KEYENCE laser microscope | Edges and small features | Burrs and fine geometry a probe misses |
| Micro-Vickers | Hardness | A heat-treat step that missed spec |
| Fischer gauge | Coating thickness | Plating or anodizing outside range |
Verification before shipment is the moment a shop either protects you or passes its own risk downstream. We treat first-article and in-process checks as part of the job, not an extra you have to remember to request.
The check sequence follows the risk of the feature. Critical dimensions — a bearing bore, a sealing diameter, a locating datum — get a per-part CMM measurement where the drawing demands it. General dimensions are sampled against a control plan, because measuring everything costs money the function does not justify. The skill is in deciding which is which, and the evidence is in the report that shows the decision.
What documentation ships with a compliant part?
A shipment from us carries the material mill certificate, the XRF verification record, a CMM or inspection report covering the critical dimensions, and a certificate of conformity. For automotive-linked work the IATF 16949 scope applies to manufacture, and the paperwork is built to match the part, not a generic template.
Documentation is what lets your own quality team accept the part without re-measuring everything. Ask for the exact package in your PO; we supply it as standard, and we name any outsourced operation so your traceability chain stays complete.
Think of the documentation package as the part's biography. The material cert says what the metal is; the XRF record says the metal matched; the CMM report says the dimensions landed; the certificate of conformity says a human signed off on the whole thing. A part with a complete biography can be accepted on trust of the record; a part with none has to be re-proven at your expense, which is the exact cost you were trying to avoid by sourcing a certified shop.
Which certifications back the parts you receive?
The manufacturing is covered by ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En). The IATF scope covers the manufacture of CNC metal machining parts but excludes product design under Clause 8.3, so we are a build-to-print manufacturer. The certificate numbers are verifiable with the registrars.
Certifications back the process discipline behind the part. They do not replace the measurement evidence on your specific lot, which is why we send both the certificate and the CMM report.
The three certificates — ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En), and ISO 14001:2015 (116024/B/0001/UK/En) — cover the system, the automotive discipline, and the environmental management. Read them as layers of process control, not as three ways of saying the same thing. Each answers a different question, and if you know the difference, you ask sharper questions of the next supplier too.
What should you check before ordering compliant parts?
Confirm the machine list by brand and count, the material verification method, the tolerance evidence (Cpk and CMM), the documentation package, and the MOQ, which is 1 piece. Send a drawing and we will return a review that states what we can hold and how we will prove it. A shop with real capacity answers in specifics, not adjectives.
- Ask for the grade and the temper on the quote, not just the alloy family.
- Ask for the mill certificate and the XRF record together, on the same lot.
- Ask which dimensions get per-part CMM and which are sampled, and why.
- Ask which steps leave the building and which partner runs them, by name.
- Ask for the documentation package in the PO, so the paperwork is a deliverable.
How do you match a material to a part before you quote?
Material choice is a decision the drawing usually makes for you, but the quote should confirm it out loud. Read the drawing's material callout and ask the shop to echo it back with the grade and the temper — 6061-T6, not just "aluminum," and 4140 quenched-and-tempered, not just "alloy steel." The temper changes the strength and the machinability, and a shop that quotes the alloy without the temper has not fully read the print.
The second question is whether the material suits the process. Some alloys are free-machining (303 stainless, 12L14 steel) and cut fast; others work-harden (304, 316) and need the right feeds; some need stress relief after heavy cutting. A shop that flags these points before you commit is saving you from a part that looks right and performs wrong. The material question is never just "what is it made of" — it is "will it survive being made." Getting the callout right on the first pass is the cheapest verification you will run, because every later check depends on it.
What this shop actually runs
Ask for capability evidence and the answer should be specific. The facility behind this guide runs 100+ CNC machines on a 6,800 m2 floor in Dongguan, China, with 100+ staff. The machine list, by category:
- 5-axis machining centres (10+) - Mazak VARIAXIS I-600 (510/910/510 mm travel, 12,000 rpm, 22 kW, 71.6 N·m, 30-tool BT40) and Mazak INTEGREX I-250H S (B-axis 0.0001°, 24 kW, 124 N·m, 38-tool HSK-A63). Applied to compound-angle parts, single-setup multi-face prismatic work, and aerospace fittings where datum transfer loss is unacceptable.
- 3-axis / 4-axis machining centres (50+) - Brother SPEEDIO S500Z2N / S700Z2N (10,000 rpm, 14/21-tool ATC, 0.7 s tool-to-tool, Z-axis 2.2 G) and Mazak VCE-430A L / VCE-570C L (10,000 rpm, 118 N·m, 24-tool ATC). Applied to prismatic parts, plates, brackets, housings.
- Swiss-type turning centres (10+) - Citizen Cincom A20-3F7 (Φ20 mm, 10,000 rpm), TSUGAMI B0206-III / B0205-III (Φ20 mm, 0.1 µm), STAR SR-32JII / SR-32J Type N (Φ32 mm, 8,000 rpm). Applied to long, slender rotational parts at ±0.002 mm.
- CNC turning centres (20+) - HEADMAN T70M/1250 (720 mm swing, 117 mm bore, 3,000 rpm, BMT75 12-station turret). Applied to shafts, bushings, flanges up to ±0.002 mm.
- Wire EDM (5+) - Sodick AQ535L (550/350/300 mm travel, ±20° taper, 800 kg workpiece). Applied to hardened tool steel, internal splines, sharp internal corners that milling cannot reach.
- Inspection: Hexagon CMM + 20+ gauges - Hexagon CMM for coordinate measurement, plus vision system, profilometer, hardness tester, coating thickness gauge, XRF for material verification. The 10:1 rule (gauge 10x more accurate than the band) is applied to every feature.
- Machine highlights - VARIAXIS I-600: one-setup multi-face 5-axis + MAZA-CHECK auto-calibration; INTEGREX I-250H S: DONE-IN-ONE mill-turn, B-axis 0.0001° + Ai thermal shield; SPEEDIO S500Z2N / S700Z2N: Z-axis 2.2 G + 0.7 s ATC; Swiss-type: guide-bush switchable + 0.1 µm resolution.
Tolerances held: milling ±0.003 mm, turning ±0.002 mm, grinding and wire EDM ±0.002 mm. Capability: Ppk >= 1.67 initial and Cpk >= 1.33 in production on key characteristics.
Certifications: ISO 9001:2015 (116024/A/0001/UK/En), IATF 16949:2016 (131941/A/0001/SM/En, clause 8.3 design excluded, disclosed openly) and ISO 14001:2015 (116024/B/0001/UK/En), issued to Dongguan Zhuohang Ltd, USCC 91441900MA4UWT6X39, established 2005.
Service area: Austria, Belgium, the Czech Republic, Denmark, France, Germany, Greece, Hungary, Ireland, Italy, the Netherlands, Spain, Sweden and the United Kingdom in Europe; Brazil, Canada, Mexico and the United States in the Americas; China, Israel, Japan, Singapore and Sri Lanka in Asia; Australia and New Zealand in Oceania; and South Africa in Africa — built in China, shipped worldwide.
Contact: Felipe Iglesias, [email protected], +86 13126536955.
Send your drawing for a quote.
Email [email protected] or call +86 13126536955 for a review and quote.
Frequently Asked Questions
What types of CNC machined parts do you manufacture?
In short, We manufacture prismatic milled parts, turned and mill-turn components, and ground precision parts — housings, brackets, shafts, pins, bushings, flanges, and complex single-setup geometry, in aluminum, stainless steel, brass, copper, titanium, or engineering plastics.
What certifications do you hold?
We hold ISO 9001:2015, IATF 16949:2016, and ISO 14001:2015. IATF 16949 scope excludes product design under Clause 8.3, so we are a build-to-print manufacturer.
Do you provide material certificates?
Yes. Every incoming lot is XRF-checked against the mill certificate, and the material cert ships with your parts. We can show the composition verification, not just a supplier's claim.
Do you provide inspection reports?
Yes. CMM dimensional reports, SPC charts, and material certificates ship with your parts. For automotive and regulated work we can also run PPAP and FAI packages on request.
What tolerances can you hold?
±0.003 mm on CNC milling, ±0.002 mm on CNC turning, and ±0.002 mm for precision grinding. We verify critical dimensions on Hexagon CMMs, with process capability Ppk ≥ 1.67 at the initial study on key characteristics.
What is your minimum order quantity?
Our MOQ is 1 piece. We take prototype and single-part orders as well as production runs, so you can validate a design before committing to volume.
How do I get compliant parts quoted?
Email your STEP, IGES, or 2D drawing to [email protected]. We return a review and a quote, usually within one business day, and provide the certificate numbers and documentation on request.
Do you machine both metal and plastic parts?
Yes. We machine aluminum, stainless steel, alloy steel, brass, copper, titanium, and magnesium, plus engineering plastics such as ABS, POM, nylon, PTFE, and PEEK. For metals, grade is confirmed by XRF against the mill certificate.
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Standards referenced on this page
- ASTM B211/B211M-19 — Standard Specification for Aluminum-Alloy Rolled or Cold Finished Bar, Rod, and Wire
- ASTM A276/A276M-17 — Standard Specification for Stainless Steel Bars and Shapes
- ISO 9001 — Quality management systems — Requirements