JC-CN parts are cut directly from metal or engineering plastic, so there is no tool cost and no minimum order. The series covers three-axis milling for straightforward geometry, five-axis work for angled features and undercuts, turning for round parts, and grinding where flatness or surface finish decides function.
Variants
| SKU | Process | Tolerance | Batch size | Lead time |
|---|---|---|---|---|
| JC-CN-M3 | 3-axis milling | ±0.05 mm | 5–2,000 | 5–8 days |
| JC-CN-M5 | 5-axis milling | ±0.005 mm | 1–1,000 | 7–12 days |
| JC-CN-T | CNC turning | ±0.01 mm | 10–5,000 | 5–10 days |
| JC-CN-G | Surface grinding | 0.01 mm flatness | 1–500 | 8–12 days |
Specification
- Max part size
- 1,000 × 600 × 500 mm (milling)
- Max turned size
- ⌀ 320 × 600 mm
- General tolerance
- ISO 2768-m, ±0.05 mm
- Critical tolerance
- ±0.005 mm on stated features
- Surface roughness
- Ra 0.4–3.2 µm
- Metals
- Aluminium 6061 / 7075, carbon steel, 304 / 316 stainless, brass, titanium on request
- Plastics
- POM, ABS, PC, PA6 / PA66, PEEK, PTFE, PMMA
- Finishes
- As machined, fine machined, anodised, bead blast, passivation, heat treatment
- File formats
- STEP, IGES, X_T, Parasolid for 3D; PDF for 2D
Inspection pack included with every batch
- Mill certificate for the stock used, matched to the batch number
- First article inspection report against your drawing, with actual readings
- CMM report with the datum scheme stated, for critical features
- Surface roughness reading where a sealing or cosmetic face is specified
- Photos of the finished parts before packing
- Packing list stating quantity, material, finish and batch number
What drives the price of a machined part
| Driver | Why it moves the price | How to reduce it |
|---|---|---|
| Setups and fixturing | Every extra setup is programming and handling time | Design for machining from fewer faces; allow a soft-jaw grip area |
| Tolerance stack | Tight tolerances need slower passes and full inspection | Tighten only the features that function; leave the rest at ISO 2768-m |
| Material | Stainless, titanium and PEEK cost several times more than aluminium | Specify the cheapest grade that meets the environment |
| Surface finish | Ra below 0.8 needs extra passes, sometimes grinding | Finish only the cosmetic and sealing surfaces |
| Batch size | Setup amortises over quantity, but long runs add inspection load | Order in batches matched to your consumption rate |
If a drawing asks for a tolerance that the geometry cannot hold, we say so in the DFM note before quoting, instead of quoting a price we cannot deliver.
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CNC part FAQ
What is the minimum order quantity for machined parts?
One part. There is no tool cost on a machined route, so a single prototype and a 5,000-part batch are both normal orders for us.
Do you inspect every part or sample?
Critical features are measured on the first article and then sampled at a fixed interval per operation, with the frequency written into the inspection plan. For medical and automotive work the plan can specify 100 % inspection of stated features, quoted as a separate line.
Can you work from a sample instead of a drawing?
Yes. We reverse-engineer the part, send you a model for approval, then machine to that model. Tolerance on a reverse-engineered part is limited by how well the original can be measured, and we state that limit in writing.
Do you offer assembly and kitting?
Yes. We can machine the parts, add purchased components, assemble and ship as a kit with a single part number, which removes a supplier from your inbound chain.
Send a drawing, get a feasibility note and a price
We reply within one business day, including where we think the tolerance is unreachable.
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