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.
Quality Requirements Come First in Everett
Start with the documentation, because that is where Everett purchasing conversations start. The Boeing Everett Factory at Paine Field anchors the largest widebody assembly operation in the world, and every supplier feeding that line inherits AS9102 first article expectations, EN 10204 3.1 mill certs and lot traceability down to the smallest turned pin. A Swiss shop that treats those as add-ons slows the whole PO down. RivCut attaches them at quote time, so a Snohomish County buyer sees the inspection and cert package priced in from the first line item.
Defense work raises the bar again. Naval Station Everett is a homeport for Navy surface combatants, and the contractors supporting ship maintenance availabilities buy valve spools, hydraulic fittings and sensor housings under DFARS material sourcing rules with full chain of custody. Those parts are classic Swiss geometry, small diameters, long length to diameter ratios, tight concentricity, and the guide bushing supports the bar at the cut so a 5 inch shaft at 0.25 inch diameter comes off straight rather than tapered.
Beyond the airframe and the pier, Everett has an instrumentation streak. Fluke Corporation builds test and measurement equipment in the city, Aviation Technical Services runs heavy airframe MRO at Paine Field and Washington State University Everett graduates engineers into all of it. Each of those worlds consumes contact pins, probe components, ferrules and standoffs in bar fed volumes, and each expects dimensional reports that stand up to an incoming inspection bench, not a handshake.
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 Everett Industries
The work Everett engineers quote most often, by industry.
Commercial Aerospace & Widebody Supply Chain
Suppliers feeding the Boeing Everett Factory and the 777X program buy turned hardware in steady, repeating volumes: fuel system fittings, clevis pins, standoffs, static line fittings and wire harness ferrules. RivCut Swiss turns these from 2024 and 7075 aluminum, 303 and 15-5 PH stainless and Ti-6Al-4V, with AS9102 first article reports, full material traceability and concentricity held to 0.0002 inches TIR. Aviation Technical Services and the wider Paine Field MRO cluster add repair demand for the same part families, often from a sample and a print.
Defense & Naval Support
Contractors supporting Naval Station Everett and Navy ship maintenance periods need small precision components on schedules a deployment does not wait for: valve spools, hydraulic fittings, gauge pins and wear bushings in 17-4 PH, 316L, K500 grade nickel copper and bronze. RivCut is DDTC registered and ITAR-controlled manufacturing capable, sources DFARS compliant material on request and ships with the certs and inspection data a government QAR expects to see in the package.
Test Instruments & Electronics
Fluke Corporation makes Everett a test and measurement town, and instrument work is where Swiss turning gets truly small. Contact pins, probe tips, connector pins, insulator bushings and threaded inserts under 0.25 inches in diameter run bar fed in brass, beryllium copper, 303 stainless and PEEK, with Ra 16 microinch finishes as machined and no minimum order for a first prototype build. Washington State University Everett engineering projects and the region's hardware startups tap the same capability at single digit quantities.
Everett Swiss Machining Questions
Answers on quoting, materials and delivery to Everett.
Swiss Turning Around Everett
Ready to Quote Your Everett Swiss Project?
Send a STEP file and a print. We review the geometry, confirm guide bushing setup and ship finished parts to Everett.