Our CNC Swissing Services

Elevate your small-component production with our CNC Swissing services—the gold standard for high precision and tight tolerances in aerospace, medical, and electronics industries. Leveraging advanced Swiss Screw Machining and Swiss Turning technology, we craft intricate parts (down to 0.5mm diameter) from metals (titanium, stainless steel), exotic alloys, and high-performance polymers—delivering consistent, repeatable results with exceptional surface finishes. Whether you need micro-medical components or high-volume electronics parts, our custom solutions blend efficiency, versatility, and uncompromising quality.​

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What Is CNC Swissing?

CNC Swissing—also known as Swiss Screw Machining or Swiss Turning—is a specialized manufacturing technology designed to produce small, complex cylindrical parts with ultra-tight tolerances. Originating in Switzerland in the 19th century for watchmaking, it has evolved into an automated CNC process that excels at parts where precision and consistency are non-negotiable.​

The process overview revolves around a unique design: Unlike conventional turning (where the workpiece is held at one end), CNC Swissing uses a guide bushing—a precision sleeve that supports the workpiece close to the cutting tool. This minimizes vibration and deflection, even for long, thin parts (e.g., medical needles, electronics pins).​

To explain “how it works” simply: The workpiece is fed through the guide bushing and rotated by a spindle. Cutting tools (mounted on a sliding turret or gang tool post) move along multiple axes (X, Y, Z, and often C for rotational control) to shape the part. The guide bushing ensures the cutting tool acts on the workpiece’s unsupported length with minimal flex—enabling tolerances as tight as ±0.001mm.​

In short, CNC Swissing is the go-to for “micro-precision” parts: If a component is small (typically ≤25mm diameter), long (length-to-diameter ratio ≥10:1), or requires complex features (e.g., multiple threads, slots, cross-holes), CNC Swissing delivers results conventional machining can’t match.

Our CNC Swissing Capabilities

We offer comprehensive CNC Swissing capabilities tailored to the demands of small-component manufacturing, with a focus on precision levels, tolerance achievements, and flexibility. Below is a detailed breakdown of our key capacities:​

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Whether you need 100 titanium medical needles (0.8mm diameter) or 500,000 brass electronics pins (2mm diameter), our CNC Swissing capabilities scale to match your project’s complexity and volume.

The CNC Swissing Process

Our step-by-step process is optimized to leverage the unique advantages of Swiss Screw Machining—minimizing vibration, maximizing precision, and streamlining production:​

1. Design and CAD Modeling: We start by reviewing your CAD model (or creating one from sketches/specifications). Our engineers optimize the design for CNC Swissing—e.g., ensuring features like cross-holes are accessible with live tooling and the part’s length-to-diameter ratio works with the guide bushing. For micro-parts, we use 3D simulation to test feasibility.​

2. CAM Programming: The CAD model is imported into CAM software (Mastercam Swiss, GibbsCAM) to generate optimized tool paths. We program sequential operations (turning → drilling → tapping → milling) and synchronize tool movements with spindle rotation. For high-volume runs, we add in-line inspection triggers (e.g., check diameter after turning).​

3. Setup and Calibration: The workpiece (usually a bar stock) is loaded into the machine’s spindle and fed through the guide bushing (calibrated to within ±0.0005mm of the spindle axis). Cutting tools are mounted on the turret/gang tool post, and coolant systems are activated. We run a test part to verify tolerances and adjust tool offsets if needed.​

4. Machining Execution: The machine runs the CAM program, with the guide bushing supporting the workpiece during cutting. Live tooling adds complex features (e.g., cross-holes, threads) without repositioning the part. Our operators monitor the process via CNC software, adjusting spindle speed/feed rate for material-specific needs (e.g., slower speeds for titanium).​

5. Post-Machining Inspection: Parts undergo rigorous quality control—100% inspection for critical components (e.g., medical devices) using CMMs and optical comparators. We verify dimensions, tolerances, and surface finish against CAD data. For high-volume runs, in-line vision systems flag defects in real time.​

Swiss Screw Machine Operation Review: After production, we analyze tool wear and process data to refine future runs—ensuring consistent quality for repeat orders.

Materials We Work With

CNC Swissing excels with a wide range of materials—from common metals to specialized alloys and polymers. Below is a breakdown of our supported materials, their key properties, and ideal uses:​

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We test all materials to optimize tool selection, speeds, and coolant use—ensuring consistent precision across every part.

Surface Treatment & Finishing Options

After machining, we offer a range of surface treatment and finishing options to enhance part durability, functionality, and appearance. Our most popular services include:​

• Grinding: Creates a smooth, precise surface (ideal for parts requiring tight fitment, e.g., medical needle tips).​

• Polishing: Delivers a mirror-like finish (e.g., stainless steel medical tools, decorative watch components).​

• Painting: Applies a corrosion-resistant coating (matte/gloss) for outdoor/industrial parts (e.g., automotive connectors).​

• Coating: Options include powder coating (thick, scratch-resistant) for industrial parts and PVD (Physical Vapor Deposition) coating for high-wear components (e.g., tooling pins).​

• Anodizing: Adds a protective oxide layer to aluminum (available in custom colors) for electronics parts.​

• Heat Treatment: Strengthens metals (e.g., titanium screws, steel pins) by heating/cooling—improving hardness and fatigue resistance.​

• Deburring: Removes sharp edges (critical for safety, e.g., medical needles, consumer goods components).​

• Electroplating: Coats parts with a thin layer of metal (gold, silver, nickel) for conductivity, corrosion resistance, or aesthetics (e.g., electrical terminals).​

The table below compares our finishing options by key factors:​

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Tolerances & Quality Assurance

Tolerances and accuracy standards are the foundation of CNC Swissing—especially for parts used in safety-critical industries. Our precision levels and tolerance ranges are tailored to your material and application, backed by rigorous measurement techniques and quality control processes:​

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Our quality control processes include:​

• Pre-machining: Inspecting raw materials (bar stock) for defects (e.g., cracks, uneven diameter) and verifying material composition (via X-ray fluorescence for exotic metals).​

• In-process: Real-time monitoring of tool wear, spindle speed, and part dimensions (via laser micrometers and vision systems); automatic tool changes when wear is detected.​

Post-machining: 100% inspection for critical parts (medical/aerospace); statistical sampling for high-volume orders. We document every step (machining parameters, inspection results) for compliance.

Key Advantages of CNC Swissing

Compared to conventional turning or milling, CNC Swissing offers unique benefits for small, complex parts:​

1. High Precision: With tolerances as tight as ±0.0005mm, it produces parts that fit seamlessly—critical for micro-medical components (e.g., catheter tips) or electronics pins where even tiny gaps cause failure.​

2. Consistency and Repeatability: The guide bushing minimizes vibration, and CNC automation ensures every part is identical—even for high-volume orders (e.g., 500,000 brass terminals).​

3. Complex Geometries: Live tooling and multi-axis control enable machining of features like cross-holes, threads, and undercuts in one setup—eliminating the need for secondary operations (and associated errors).​

4. Reduced Setup Time: Automated tool changers and bar-feeder systems let us run unattended for hours—cutting setup time by 60–80% compared to conventional machining.​

5. Increased Efficiency: High-Speed Machining (up to 15,000 RPM for aluminum) and unattended operation reduce per-part cycle time. For high-volume parts, we achieve production rates of 10–50 parts per minute.​

6. Versatility: It works with almost any material (metals, plastics, exotics) and handles parts from 0.5mm to 25mm diameter—making it a one-stop solution for diverse small-component needs.​

7. Cost-Effectiveness: While upfront costs are higher than conventional machining, reduced secondary operations, minimal waste (precision cutting), and fast cycle times lower long-term costs—especially for high-volume orders.​

8. Tight Tolerances: The guide bushing’s support is unmatched for long, thin parts (e.g., 20mm-long needles with 1mm diameter)—conventional turning would cause deflection, but CNC Swissing maintains ±0.001mm tolerance.​

High-Quality Surface Finish: Minimal vibration and sharp cutting tools produce surface finishes as smooth as Ra 0.1μm—eliminating the need for post-machining polishing in many cases.

Industry Applications

CNC Swissing is indispensable across industries that rely on small, high-precision components. Here are its most common applications:

For example, in the medical industry, our CNC-swissed hypodermic needles (0.8mm diameter, ±0.001mm tolerance) ensure consistent fluid flow and minimal patient discomfort. In electronics, our brass PCB pins (1mm diameter) fit seamlessly into dense circuit boards—critical for miniaturized devices like smartphones.

Advanced Manufacturing Techniques in CNC Swissing

To maximize the precision and efficiency of CNC Swissing, we leverage specialized machining techniques and optimize processes for small, complex parts:​

• Swiss Turning with Live Tooling:​

• The core technique of CNC Swissing—combines conventional turning (shaping outer diameters) with live tooling (drills, taps, mills mounted on the turret). This lets us add cross-holes, threads, or slots in one setup—eliminating secondary operations. For example, we can machine an electronics pin with a threaded end, a cross-hole for wiring, and a knurled section in a single cycle.​

• We use gang tooling (multiple tools mounted side-by-side) for simple parts (e.g., straight pins) to reduce tool change time, and turret tooling (rotating tool post) for complex parts (e.g., medical screws with multiple features).​

• Micro-Machining for Tiny Parts:​

• For components ≤1mm diameter (e.g., micro-needles), we use micro-live tooling (0.1mm-diameter drills/mills) and ultra-low feed rates (5–10 mm/min) to avoid tool breakage. We also use air-cooled spindles (instead of coolant) for micro-parts to prevent residue buildup on small features.​

• Bar Feeding and Unattended Operation:​

• We use automatic bar feeders (capacity up to 3 meters) to load long bar stock into the machine—enabling unattended operation for 8–12 hours. This is critical for high-volume orders (e.g., 500,000 electronics pins) as it reduces operator time and increases efficiency.​

• Tool Path Optimization:​

• CAM software generates tool paths that minimize tool travel and prioritize features by accessibility. For example, we machine outer diameters first (to stabilize the part), then add inner features (e.g., holes) and finally complex features (e.g., undercuts). For exotic metals like inconel, we use trochoidal turning (a circular tool path) to distribute cutting force evenly and extend tool life.​

• Cutting Tool Selection:​

• Carbide Tools: For most metals (steel, aluminum, brass)—durable and cost-effective for high-volume runs. We use coated carbide (TiAlN) for heat resistance.​

• Diamond-Coated Tools: For non-metals (PEEK, acrylic) and exotic metals—prevent chipping and ensure smooth surface finishes.​

• Ceramic Tools: For high-temperature alloys (inconel, tantalum)—withstand heat up to 1,200°C, reducing tool changes by 50%.​

• Coolant Systems:​

• Flood Coolant: For metal machining—delivers high-pressure coolant (50–80 bar) to the cutting zone via directed nozzles. This reduces heat distortion and flushes away chips (critical for small parts where chips can get stuck in cross-holes).​

• Mist Coolant: For plastics and micro-parts—atomizes coolant into a fine mist to avoid residue buildup. Ideal for PEEK or acrylic, where excess coolant can warp the part.​

• Guide Bushing Optimization:​

The guide bushing is the “secret” to CNC Swissing precision—we select bushings based on part diameter (clearance ≤0.001mm) and material. For soft metals (copper), we use carbide bushings to prevent wear; for hard metals (titanium), we use diamond-coated bushings for longer life. We also lubricate bushings with high-pressure oil to reduce friction between the part and bushing.

Case Studies: CNC Swissing Success Stories

Our CNC Swissing services have solved complex small-component challenges for clients across medical, electronics, and aerospace industries. Below are two successful projects showcasing our expertise in micro-precision and high-volume production:​

Case Study 1: Medical Device Company (Stainless Steel Hypodermic Needles)​

• Challenge: The client needed 1,000,000 stainless steel hypodermic needles monthly (0.8mm outer diameter, 0.5mm inner diameter, ±0.001mm tolerance). The needles required a sharp, burr-free tip (for minimal patient discomfort) and a polished inner surface (for consistent fluid flow). Their previous supplier used conventional turning, which caused 5% of needles to fail (uneven tips, inconsistent inner diameter) and had a 3-week lead time.​

• Solution: We used CNC Swissing with a 12mm-capacity Swiss machine, carbide turning tools, and micro-grinding tools for the needle tip. We optimized the process with automatic bar feeders (3-meter bars) for unattended operation and in-line vision systems to inspect tip sharpness and inner diameter in real time. For the polished inner surface, we used a diamond-coated honing tool in the live tooling turret. We ran 10 machines 24/7 to meet high-volume demand.​

• Results:​

• Defect rate dropped from 5% to 0.3%—only 3,000 needles failed per month (vs. 50,000 previously).​

• Lead time shortened from 3 weeks to 10 days—helping the client keep up with global demand for medical supplies.​

• The client’s customer satisfaction score increased by 20% (due to smoother needle insertion and consistent performance).​

• Client Testimonial: “CNC Swissing transformed our needle production. The precision and speed are unmatched, and the defect reduction saved us thousands in rework costs. We’ve expanded our order to include other medical components.” — Jennifer M., Medical Device Production Director.​

• Before and After: Conventional needles had jagged tips and inconsistent inner diameters; our needles featured sharp, uniform tips and smooth inner surfaces that met FDA standards.​

Case Study 2: Electronics Manufacturer (Brass PCB Pins)​

• Challenge: The client needed 200,000 brass PCB pins monthly (1mm diameter, 10mm length, ±0.002mm tolerance) for smartphones. Each pin required a 0.5mm cross-hole (for wiring) and a gold-plated finish. The client needed a 2-week lead time to support their smartphone assembly line. Their previous supplier used stamping, which caused 8% of pins to have misaligned cross-holes.​

• Solution: We used CNC Swissing with live tooling (0.5mm carbide drills) to machine the cross-hole in-line with turning. We used a gang tool post for fast tool changes and automatic bar feeders for unattended operation. After machining, we added electroplating (gold, 5μm thickness) and conducted 100% inspection with laser micrometers (to verify diameter) and optical comparators (to check cross-hole alignment).​

• Results:​

• Cross-hole misalignment dropped from 8% to 0.2%—only 400 pins failed per month (vs. 16,000 previously).​

• Lead time was met (2 weeks)—ensuring the client’s assembly line stayed on schedule.​

• Production cost per pin decreased by 25% (reduced rework and eliminated secondary operations for cross-holes).​

• Challenge Overcome: Stamping couldn’t achieve precise cross-hole alignment for small pins; CNC Swissing’s live tooling and guide bushing support solved this issue.​

Client Testimonial: “The PCB pins fit perfectly into our smartphones—no more assembly delays from misaligned holes. The gold plating is consistent, and the lead time is reliable. We now source all our small electronics pins from them.” — Robert T., Electronics Component Manager.

Why Choose Our CNC Swissing Services?

With numerous CNC Swissing providers, here’s what sets us apart as the trusted partner for small, high-precision components:​

• Expertise in CNC Swissing: Our team has 20+ years of specialized experience—we master advanced techniques like micro-machining, live tooling optimization, and exotic metal processing. Our engineers are certified in AS9100 (aerospace) and ISO 13485 (medical) and can solve complex challenges (e.g., 0.1mm cross-holes in titanium, ±0.0005mm tolerance in PEEK) that other providers can’t.​

• Experience in Various Industries: We’ve served 700+ clients across 10 industries—from medical startups to Fortune 500 electronics companies. This cross-industry experience means we understand sector-specific requirements: FDA compliance for medical needles, RoHS compliance for electronics pins, and AS9100 for aerospace components.​

• High-Quality Equipment: We invest in state-of-the-art CNC Swiss machines—15 systems (5–25mm capacity) with live tooling, automatic bar feeders, and in-line inspection (laser micrometers, vision systems). All machines are calibrated weekly (using laser interferometers) to maintain ±0.0005mm precision.​

• Excellent Customer Service: Our team is available 24/7 to support your project—from design consultation to post-delivery. We offer free CAD reviews (helping you optimize designs for CNC Swissing, e.g., adjusting cross-hole positions for live tooling access) and free samples (so you can verify quality before placing large orders). For urgent projects (e.g., medical supply shortages), we assign a dedicated project manager.​

• Fast Turnaround Times: Our optimized processes deliver industry-leading lead times:​

• Prototypes (1–100 units): 1–3 days​

• Low-volume orders (100–1,000 units): 3–7 days​

• High-volume orders (1,000+ units): 7–14 days​

For rush orders (e.g., electronics assembly line emergencies), we can deliver parts in 48 hours (for small batches) by running machines 24/7.​

• Cost-Effective Solutions: We help you save money through:​

• One-setup machining: Eliminates secondary operations (e.g., drilling cross-holes separately), reducing labor costs by 40–50%.​

• Unattended operation: Automatic bar feeders let us run machines overnight, lowering per-part labor costs.​

• Volume discounts: 10% off orders over 10,000 units and 15% off orders over 100,000 units—ideal for high-volume electronics/medical parts.​

Commitment to Quality: We’re ISO 9001, AS9100, and ISO 13485 certified—our quality control processes ensure 99.9% of parts meet your specifications. We also offer full traceability (every part is labeled with a unique ID, linked to machining logs and inspection data) for compliance.

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