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.
Certified Small Turned Parts for the Reno-Sparks Corridor
Quality requirements set the bar in Reno machining, not price. A supplier feeding the Tesla Gigafactory in Sparks faces automotive-grade expectations even on prototype quantities, which means PPAP-level first articles, dimensional reports and lot traceability on parts as small as a battery-module contact pin. Sierra Nevada Corporation's aircraft modification and ISR work across town raises the bar again with AS9100 supplier expectations and ITAR handling, and the med device companies moving in for Nevada's tax climate bring FDA traceability rules with them. RivCut quotes those documentation packages up front instead of treating them as change orders.
The parts themselves fit Swiss geometry almost perfectly. Battery and energy-storage hardware from Panasonic Energy's cell lines to Dragonfly Energy's lithium packs runs on turned copper and brass contact pins, gold-plate-ready terminals and stainless standoffs by the thousand. UAS builders around Reno-Stead Airport spec slender aluminum and titanium shafts, ferrules and fuel fittings where every gram counts. A sliding headstock lathe with a guide bushing turns all of it from bar stock between 0.020 and 1.50 inches, holding concentricity to 0.0002 inches TIR across runs of 500 to 100,000 pieces.
Geography helps too. Union City to Reno is a straight shot over Donner Pass, so standard ground delivery lands in 1 to 2 business days, close enough that a Sparks maintenance crew can treat us like a local vendor. Winter closures on I-80 are the one caveat, and for November through March deadlines we recommend building in a day of buffer or moving critical shipments to air.
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 Turned Parts for Reno Industries
The work Reno engineers quote most often, by industry.
EV & Battery Manufacturing
The Gigafactory corridor consumes turned electrical hardware at volumes few buyers see elsewhere: contact pins, battery terminals, busbar standoffs and grounding studs, plus the gauge pins and locating dowels that keep automated assembly cells in tolerance. Suppliers to Tesla, Panasonic Energy and Redwood Materials need lot-level traceability and consistent plating-ready finishes across tens of thousands of pieces. RivCut bar-feeds those runs in C110 copper, brass, 303 stainless and 17-4 PH with dimensional reports on every lot and cleanroom-compatible packaging on request.
Defense & Unmanned Systems
Sierra Nevada Corporation's Sparks operations, the training pipeline at NAS Fallon and the drone cluster flying out of Reno-Stead Airport all buy small turned hardware with paperwork attached. Connector pins, fuel system fittings, actuator shafts and antenna ferrules for ISR platforms and UAS airframes need AS9102 first article reports, full material certs and ITAR-compliant handling. RivCut turns them from 2024 and 7075 aluminum, Ti-6Al-4V and 303 stainless, holding length-to-diameter ratios past 20 to 1 for the slender shafts flight hardware demands.
Medical & Research Instrumentation
Renown Health anchors clinical demand in northern Nevada and the University of Nevada, Reno's medical school and nanotech labs generate a steady stream of device prototypes, while Bay Area med device OEMs increasingly source from the Reno corridor for cost. Swiss turning covers the micro end of that supply chain: bone screws, luer fittings, cannulated pins, electrode bodies and PEEK insulators under half an inch in diameter, finished to Ra 16 microinches as machined with passivation and full 316L material traceability.
Reno Swiss Machining Questions
Answers on quoting, materials and delivery to Reno.
Swiss Turning Around Reno
Ready to Quote Your Reno Swiss Project?
Send a STEP file and a print. We review the geometry, confirm guide bushing setup and ship finished parts to Reno.