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.
Prototype Pricing Is a Loan. Production Pricing Pays It Back.
Central Contra Costa engineers tend to design in Pleasant Hill and manufacture somewhere else, which makes the prototype-to-production handoff the moment where budgets live or die. On a Swiss lathe that handoff is nearly free. The first bone screw or contact pin we cut proves out the program, the guide bushing and live tooling setup carries straight into bar-fed volume and per-piece cost falls steeply once a job justifies dedicated bar stock and lights-out running. No retooling to a different shop, no requote drama, no drift between piece 1 and piece 50,000.
The local demand is real even if the factories are not. John Muir Health operates major medical campuses in neighboring Walnut Creek and Concord, and the clinicians, device consultants and medtech startups orbiting them spec cannulated components, luer fittings and implant-grade screws in 316L and titanium. Buchanan Field Airport, one town over in Concord, keeps a general aviation maintenance and avionics community busy with turned pins, fittings and fasteners. Meanwhile Diablo Valley College feeds the Interstate 680 corridor with engineering transfer students who become the buyers reading pages like this one.
Geography is the quiet advantage. Our shop sits in Union City, roughly 30 miles south along the 680 and 880 corridors, so standard ground shipping usually arrives in one business day, will-call pickup is a realistic option and an engineer near the Pleasant Hill BART station can talk to the machinist running their part without booking a flight.
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.
Swiss Machining Demand Across Pleasant Hill
How demand for small turned parts breaks down across Pleasant Hill.
Medical Devices & Clinical Instrumentation
The John Muir Health campuses in Walnut Creek and Concord anchor a central Contra Costa cluster of surgeons, device consultants and early-stage medtech founders, many of them working from Pleasant Hill home offices and small suites. Their parts are classic Swiss territory: bone screws with precise thread forms, cannulated pins, dental implant components and luer fittings under 0.5 inches in diameter. RivCut turns them from 316L, titanium and PEEK with concentricity to 0.0002 inches TIR and Ra 16 microinch finishes as machined, with lot traceability from the first prototype through validation builds.
General Aviation & Aerospace Suppliers
Buchanan Field Airport in adjacent Concord supports flight schools, avionics installers and maintenance operations that consume small turned hardware on unforgiving schedules, and aerospace engineers who commute out of the Pleasant Hill BART station moonlight on side programs that need flight-quality parts in prototype quantities. We Swiss turn clevis pins, fuel system fittings, static port fittings and instrument fasteners from 2024 and 7075 aluminum, 303 stainless and Ti-6Al-4V, shipping material certs and first article inspection reports with the parts, not after them.
Hardware Startups & Engineering Services
Pleasant Hill sits in commuting range of the entire East Bay hardware economy, and Diablo Valley College keeps a steady stream of engineering students and career changers building products from central Contra Costa. Those teams need connector pins, contact pins, standoffs, ferrules and sensor housings in quantities that start at one and end wherever the market takes them. Our no-MOQ policy means a DVC capstone team and a funded startup running 25,000 piece bar-fed lots get the same machines and the same inspection, just very different unit prices.
Questions Pleasant Hill Teams Ask First
Quoting, tolerances and logistics for Pleasant Hill projects.
Swiss Turning Services Near Pleasant Hill
Put Our Swiss Lathes to Work for Pleasant Hill
One upload gets Pleasant Hill teams pricing, lead times and a guide bushing feasibility check.