What Is Swiss CNC Machining?
Swiss CNC machining (also known as Swiss screw machining or sliding headstock turning) feeds bar stock through a stationary guide bushing directly adjacent to the cutting tool. Because the material is supported right where the cut happens, deflection and vibration are eliminated — allowing ultra-tight tolerances, micro features, and length-to-diameter aspect ratios over 20:1 that conventional CNC lathes cannot achieve.
Bar Stock Feeds Through Guide Bushing
The raw bar feeds through a carbide-lined guide bushing, providing zero-clearance support right next to the cutting insert.
Sliding Headstock Moves Along Z-Axis
Instead of moving the cutting tool along the part, the headstock advances the bar past fixed gang tooling, maintaining maximum rigidity.
Live Tooling & Sub-Spindle Dual Machining
Cross-milling, axial drilling, threads, and back-side features are completed in a single setup before parting off the finished part.
What Hillsboro OEMs and Startups Each Want From a Swiss Shop
An established equipment supplier in Hillsboro orders differently than a garage-stage hardware team, and a Swiss shop has to serve both. The OEM side, the supply chains feeding Intel Ronler Acres, ASML and Tokyo Electron tool programs, buys turned components in qualified lots: dowel and locating pins, VCR-style gland ferrules, feedthrough bodies and chamber hardware in 316L and clean aluminum, every bar traced to a mill cert and every lot inspected to a control plan. Once a part number is qualified, what matters is that piece 40,000 measures like piece 4.
Startups coming out of the same Silicon Forest talent pool need the opposite service profile. A sensor or microfluidics team does not have a qualified supply chain, it has a drawing that changed twice this week and a demo date. For them the pitch is no MOQ, DFM feedback on the first RFQ and single-setup parts off the sub-spindle so a revised contact pin or manifold nozzle ships in days, not after a tooling cycle.
Swiss turning fits Hillsboro work in both modes because the guide bushing supports the bar at the point of cut. Slender parts past 20:1 length to diameter come off straight, concentricity holds to 0.0002 inches TIR and finishes run near Ra 16 microinches as machined, which matters on sealing faces and cleanroom hardware. Ground transit from our Union City, CA shop to Washington County is about 1 to 2 business days.
Engineered for Micro-Precision & High Volume
From single medical prototypes to automated 100,000+ piece production runs — built for zero defect manufacturing.
±0.0001" Micro Tolerance
Holding ultra-precise concentricity, diameter, and thread pitch tolerances on slender pins, shafts, and medical implants where standard lathes fail.
Single-Setup Completion
Multi-axis live tooling and sub-spindles handle turning, off-center milling, cross-drilling, hex broaching, and thread whirling with zero secondary setups.
Superior Ra 16 Surface Finish
Rigid guide bushing support eliminates chatter and micro-vibration, consistently producing mirror-smooth Ra 16 µin (0.4 µm) turned surfaces as-machined.
Lights-Out Production Savings
Automatic bar feeders and continuous chip management allow 24/7 un-attended operation, dramatically lowering unit costs for mid-to-high volume orders.
Swiss Machining Services Suite
Sliding headstock capabilities engineered for challenging small-diameter components.
Micro-Miniature Turning
Machining small-diameter components down to 0.020" (0.5 mm) with tight features, internal bores, and miniature threads for medical instruments and micro-valves.
Down to 0.5 mm barHigh L/D Ratio Slender Shafts
Turning long, slender shafts and pins with length-to-diameter ratios up to 20:1 without chatter, taper, or deflection.
L/D up to 20:1Multi-Axis Live Tooling
Up to 12 axes with motorized driven tools for off-center milling, keyways, cross-drilled passages, hex flats, and helical thread whirling.
Up to 12-axis liveDual-Spindle Sub-Machining
Synchronized pick-off sub-spindle finishes the back end of the part—chamfering, counterboring, and tapping—delivering 100% complete parts off the line.
100% finished partsMedical & Implant Machining
Precision turning of Titanium Ti-6Al-4V ELI bone screws, dental implant posts, orthopedic pins, and endoscope tips with ISO 13485 quality control.
Titanium & 316L medicalHigh-Volume Bar Fed Runs
Automated 12ft bar loaders, high-pressure coolant (2,000 PSI), and automated part catchers support fast production runs from 500 to 100,000+ pieces.
500 to 100,000+ pcs
Titanium Grade 5 Dental Implant Post & Bone Screw
Swiss turned for a medical device manufacturer requiring intricate thread geometry, micro-cannulation through-holes, and tight hex drive features. Machined in a single operation with zero hand deburring required.
tolerance held
surface finish
turnaround
2,500-piece run
- Optical comparator & CMM dimensional inspection report
- Mill test certs (EN 10204 3.1) with heat lot traceability
- Passivation certs per ASTM A967 / ASTM F86
- Certificate of Conformance per medical purchase order
Swiss Turning vs. Standard Lathe vs. CNC Milling
Choose the right manufacturing method based on geometry, tolerances, and batch size.
Stocked Materials for Swiss Turning
Precision ground round bar stock in metals, medical alloys, and engineering plastics.
Titanium Alloys
Ti-6Al-4V (Grade 5), Ti-6Al-4V ELI (Grade 23), Commercially Pure Titanium (Grade 2). Ideal for biocompatible implants, dental screws, and aerospace pins.
Stainless Steels
303, 304/304L, 316/316L, 17-4 PH, 440C, Custom 455. Excellent corrosion resistance, high tensile strength, and medical compliance.
Copper & Brass Alloys
C36000 Free-Cutting Brass, C17200 Beryllium Copper, Tellurium Copper C14500. Perfect for gold-plated electrical contacts and probe tips.
Specialty & Superalloys
Inconel 718, Kovar, Nitronic 60, Hastelloy C-276, Nitinol. High-temperature and controlled-expansion applications for aerospace and energy.
Medical Plastics
PEEK (Unfilled & 30% Glass Filled), Delrin (POM-H), PTFE (Teflon), Ultem 1000, Torlon 4203. Biocompatible, autoclavable, and dimensionally stable.
Alloy & Tool Steels
4140, 4340, A2, D2, M2 tool steel. High wear resistance and toughness after vacuum heat treating for mechanical shafts and dowels.
DFM Tips for Swiss Turned Parts
Optimize your 3D CAD models and drawings for maximum Swiss machining efficiency.
1. Precision Ground Bar Stock
Because the bar slides through a guide bushing, use h8 diameter tolerance precision ground bar stock to prevent binding or loose play.
2. Thread Relief Grooves
Provide a thread relief necking groove at thread shoulders (minimum 1.5x thread pitch) to allow clean single-point thread tool retraction.
3. Corner Radii & Chamfers
Specify internal corner radii of at least R 0.010" (0.25 mm) and external 45° lead-in chamfers to ease automated tool engagement and deburring.
Hillsboro Applications for Swiss Turning
The Hillsboro part families that belong on a Swiss lathe.
Semiconductor & Fab Equipment
The tool and facilities supply chains around Intel Ronler Acres, ASML Hillsboro and Tokyo Electron consume small turned hardware constantly: precision dowel pins, gas line ferrules and glands, weldment fittings, alignment standoffs and electrical feedthrough bodies. These parts live in vacuum and gas delivery systems, so the spec sheet reads clean 316L or 6061, burr-free edges, fine sealing finishes and full lot traceability. RivCut Swiss turns them bar-fed in runs from 500 to 100,000 plus, with double bagging available for parts headed into controlled environments.
Medical Devices & Orthopedics
Hillsboro has a real medical device base, anchored by Acumed, the orthopedic implant and trauma fixation maker headquartered in the city, plus lab instrumentation and diagnostics teams across Washington County. This is native Swiss lathe territory: bone screws with cut or thread-whirled forms, cannulated pins, luer fittings and PEEK insulator bodies under half an inch in diameter. We machine titanium, 316L and implant-adjacent plastics with material certs and dimensional inspection reports suited to device audit trails.
RF Electronics & Hardware Startups
Between Qorvo's RF semiconductor operation and the steady stream of sensor, wearable and test-hardware startups the Silicon Forest produces, Hillsboro buys a lot of small connector-class hardware: contact pins, gold-plate-ready pin blanks, coax-style ferrules, probe bodies and threaded standoffs in brass, beryllium-free copper alloys and 303 stainless. Startups get prototype quantities with DFM notes on the first pass. Teams moving to pilot builds get the same part bar-fed at production pricing without requalifying a new vendor.
Swiss Machining Answers for Hillsboro
The details Hillsboro purchasing teams need up front.
Around Hillsboro: More Swiss Machining
Hillsboro Parts, Machined to ±0.0001 in
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