Machining Precision
Critical features are routinely held to ±0.001 mm to ±0.005 mm, depending on material, geometry, and feature size. Surface finishes typically reach Ra 0.2–0.8 µm; finer values are achievable with optimized toolpaths and secondary finishing when the application requires it.
We run a fleet of simultaneous 5-axis machines from Hermle and DMG MORI, equipped with high-resolution linear scales and active thermal compensation. These systems keep tool engagement continuous on free-form surfaces, undercuts, and multi-sided features in a single setup, reducing stack-up error. In-process probing and post-process CMM verification are standard on tight-tolerance jobs, so positional and form accuracy stay within specification across the batch. For components that demand the tightest geometric control, we apply dedicated 5-axis strategies together with micron-level probing cycles rather than relying on sequential setups.
Materials
Process parameters for ultra-precision machining are matched to each material so that accuracy is preserved rather than limited by material behavior.
Metals
Aluminum alloys such as 6061 and 7075 machine cleanly and offer a favorable strength-to-weight ratio for structural housings and brackets. Stainless grades including 303, 304, 316, and 17-4 PH require controlled speeds and sharp tooling to manage work hardening while protecting surface integrity. Titanium alloys (primarily Ti-6Al-4V) demand lower cutting speeds, high-pressure coolant, and frequent tool inspection to limit heat input and maintain dimensional stability. Copper and copper alloys are processed with attention to chip control and surface finish for thermal and electrical applications.
Engineering plastics
PEEK is selected for high-temperature and chemically aggressive environments; we use sharp carbide tooling and controlled clamping pressure to avoid deformation. POM provides dimensional stability and low friction for precision mechanical parts. PTFE requires specialized fixturing because of its softness; we adjust feeds and depths of cut to keep walls and thin sections within tolerance during precision CNC milling.
Applications
The same process framework is applied across sectors where small deviations affect function or safety.
In aerospace we produce structural brackets, connector housings, and satellite interface components that must maintain positional accuracy under vibration and thermal cycling through ultra-precision CNC milling. Medical work includes titanium and stainless instrument parts as well as selected implant trial components that require biocompatible materials and fine surface finishes. Optical and semiconductor customers receive mounts, lens barrels, and vacuum-chamber fixtures whose flatness, perpendicularity, and surface quality directly influence system performance.
Each project begins with a review of the functional requirements so that tooling, fixturing, and inspection criteria are set against the actual use case rather than a generic template.
Delivery Capability
Prototype and first-article work is typically completed in 5–12 working days once material is available. Production quantities are scheduled against current machine loading; our 12 multi-axis centers support monthly output of several thousand precision parts, depending on complexity and cycle time.
International shipments are handled through established logistics partners with protective packaging designed for high-precision surfaces. The standard sequence for precision CNC milling projects is drawing review and DFM feedback, prototype or first-article production, customer approval, then production release under the same process parameters. This approach keeps the transition from sample to volume predictable.
Quality Control
Dimensional verification on tight-tolerance milling work is performed on Zeiss and Hexagon CMMs together with optical measuring systems capable of resolving features at the micron level. Critical characteristics follow agreed inspection plans-full inspection for prototypes and low-volume runs, statistical sampling for established production.
The quality system is certified to ISO 9001 and operates under AS9100 principles for aerospace work. Material certificates, process records, and inspection reports (including first-article reports to AS9102 when required) are retained and supplied with the shipment. Traceability from incoming material through final inspection supports both customer audits and internal process improvement.
FAQ
Q: What accuracy levels can be held on critical features?
A: Under suitable material and geometry conditions we routinely maintain ±0.001 mm on key dimensions and can tighten selected features further with dedicated process control and verification.
Q: Is there a minimum order quantity?
A: No fixed MOQ applies. Single-piece prototypes and small batches are accepted; pricing and scheduling scale with quantity.
Q: Can you support low-volume or bridge production?
A: Yes. Prototype and small-batch runs are a core part of the service and are frequently used for design validation or interim production before full-scale release.
Q: Do material certificates and inspection reports ship with the parts?
A: Mill certificates and dimensional inspection reports are included when specified on the purchase order or drawing. Aerospace jobs can also receive AS9102 first-article documentation.
Q: How long does a typical order take?
A: Prototypes are usually ready in 5–12 working days. Production lead times are confirmed at quotation and depend on volume, material availability, and current machine loading.
Q: How do you maintain accuracy on thin-wall titanium or complex free-form surfaces?
A: We combine simultaneous 5-axis toolpaths, specialized fixturing that minimizes clamping distortion, high-pressure coolant, and frequent in-process probing. Thermal growth is managed through machine compensation and, when necessary, controlled shop-floor temperature.
Most inquiries start with a drawing and a target tolerance. Send both, along with your expected volume, and we'll come back with achievable accuracy, a first-article timeline, and where the cost sits at prototype versus production quantities.
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