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.
A Century of Heavy Manufacturing, Fed by Small Parts
Manufacturing identity in New Orleans traces a straight line from wartime boatbuilding to spaceflight. The Michoud Assembly Facility that built Higgins cargo planes in the 1940s and Saturn V stages in the 1960s now hosts Boeing welding the SLS core stage and Lockheed Martin building Orion structures. That lineage left the region fluent in large-format fabrication, and every large structure it produces is stitched together with small precision components: alignment pins, instrumentation fittings, fastener hardware and sensor bodies that a sliding headstock lathe produces far better than any manual machine.
The maritime side of that identity never went away. Bollinger Shipyards builds Coast Guard cutters and Navy patrol boats, NAS JRB New Orleans keeps reserve aviation flying on the West Bank, and the Coast Guard 8th District runs the largest district in the service from Canal Street. Offshore, ROV operators like C-Innovation in nearby Harvey push subsea vehicles into the Gulf. All of it consumes marine-grade turned parts, 316 stainless valve spools, Monel fittings, titanium sensor housings, in quantities that suit bar-fed Swiss production.
RivCut serves this market from our Union City, California shop, about 3 to 4 business days by ground to southeast Louisiana, with air freight when a launch window or a drydock schedule will not wait. No minimum order, live tooling and sub-spindle work in a single setup, and runs from one prototype to 100,000 plus pieces.
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.
What New Orleans Teams Send to Our Swiss Lathes
What New Orleans buyers actually order, sector by sector.
Aerospace & Space Systems
The SLS and Orion programs at Michoud carry NASA-grade documentation expectations down through every supplier tier, and the small hardware is where Swiss turning earns its keep. Alignment pins, instrumentation fittings, electrical contact pins and pressure-port bodies come off our sliding headstock lathes concentric to 0.0002 inches TIR with full material traceability. We turn 6Al-4V titanium, A286, 15-5 PH and 2024 and 7075 aluminum with first article inspection reports on request, the paperwork flight hardware programs expect at receiving.
Shipbuilding & Defense
Bollinger's cutter and patrol boat lines, NAS JRB New Orleans and the Coast Guard 8th District all run on MIL-spec turned hardware that corrodes fast in Gulf air if the material call-out is wrong. RivCut is DDTC registered and ITAR-capable, and we default marine work to 316 stainless with passivation, Monel and marine-grade aluminum with anodize. Shipboard valve spools, hull fitting components, hydraulic fittings and fastener hardware ship with mill certs, and VCI packaging is available for parts headed into humid Gulf Coast storage.
Offshore Energy & Subsea Robotics
The Gulf's offshore sector, from C-Innovation's ROV fleet in Harvey to the pump stations the Southeast Louisiana Flood Protection Authority keeps running, replaces small pressure-rated components on schedules that do not flex. Swiss geometry fits this work: slender shafts past 20 to 1 length-to-diameter, duplex stainless and titanium connector bodies, gauge pins and instrument fittings under 1.5 inches in diameter. We machine to API and NACE sour-service material specs when the print calls for them, often working from a worn sample and a sketch.
Common Questions from New Orleans Teams
How Swiss turning, quoting and shipping work for New Orleans teams.
Swiss Machining in the New Orleans Region
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