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.
Turned Hardware for Honolulu's Repair Economy
The dominant industrial cluster on Oahu is defense sustainment. Pearl Harbor Naval Shipyard and Intermediate Maintenance Facility is the largest industrial employer in Hawaii, overhauling submarines and surface ships for the Pacific Fleet, and Joint Base Pearl Harbor-Hickam layers Air Force and Navy aviation maintenance on top of it. The Department of Defense spends roughly 13 billion dollars a year in the state, and a real share of that lands with small contractors who need replacement pins, bushings, spools and fittings machined to print in weeks, not the months an OEM part number can take.
The supply chain problem is that almost none of that hardware is made on the island. Machine shop capacity in Honolulu is thin and bar-fed Swiss capacity is essentially nonexistent, so buyers already source turned parts from the mainland by default. Swiss turning fits this work because the guide bushing supports the bar at the point of cut, which is how a 3 inch long spool at 0.2 inch diameter comes off straight, concentric to 0.0002 inches TIR and burr free without a second operation.
RivCut runs that work from Union City, California, the closest major machining corridor to the islands. Parts finish, get inspected and go straight to air freight, roughly two business days to Honolulu, faster on expedite. For maintenance planners at the shipyard, Hawaiian Airlines or a UH research lab, that beats the typical mainland shop that treats Hawaii as an afterthought surcharge.
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.
How Honolulu Industries Use Swiss Turned Parts
Three local sectors, three very different turned parts. Here is what we machine for Honolulu teams.
Defense & Ship Repair
Submarine and surface ship availability at Pearl Harbor Naval Shipyard depends on a long tail of small turned components: hydraulic valve spools, gauge pins, packing gland hardware, electrical connector pins and sacrificial bushings. Contractors supporting the yard and Joint Base Pearl Harbor-Hickam order these in lots from a handful to thousands. RivCut Swiss turns them from 316L, 17-4 PH, Monel 400 and naval bronze with mill certs and first article reports, and we quote from a print, a sample part or both.
Aviation & Airline MRO
Hawaiian Airlines bases its fleet and maintenance operation at Daniel K. Inouye International Airport, and general aviation, air tour and cargo operators across the field generate steady demand for turned aircraft hardware. Clevis pins, fuel system fittings, antenna mounts and instrument fasteners are classic Swiss lathe geometry. We machine them from 2024 and 7075 aluminum, 303 stainless and Ti-6Al-4V with full traceability, then air ship so an AOG situation is measured in days rather than weeks.
Medical & Ocean Research
Honolulu's medical anchor is unusually deep for a city its size: Tripler Army Medical Center serves the entire Pacific region and The Queen's Medical Center anchors the civilian side. Alongside them, University of Hawaii at Manoa oceanography labs and Honolulu engineering firms like Oceanit build sensors and instruments that live in salt water. Swiss machining covers both ends, luer fittings, cannulated pins and electrode bodies for device work, plus titanium and PEEK sensor housings and ferrules that shrug off corrosion at depth.
Swiss Machining FAQ for Honolulu Buyers
Lead times, tolerances, materials and shipping for Honolulu orders.
Swiss Machining Near Honolulu
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