Capillary Precision Cutting

Type: Technical Concept | Source: QG Laser Technical Proposals

Abstract

Capillary precision cutting means processing tubes so small — ≤40mm OD, down to 5mm in extreme cases — that standard machines cannot hold them, let alone cut them accurately. This is a physics problem. QG Laser solved it. The G25 and G40 are the proof.

The Engineering Challenge

Five problems. All solved:

1. Clamping force control — Thin walls deform under standard chuck pressure

1. Coaxiality — Small tubes deflect easily, drifting off the cutting centerline

1. Heat-affected zone — Low thermal mass means laser parameters must be surgically precise

1. Vibration suppression — High length-to-diameter ratio = low natural frequency = cut chatter

1. Focus positioning — Auto-focus accuracy required at ±0.1mm

Technology Stack

• Precision Chuck — Biyoute precision clamping (image: 外贸/机器配置照片/精密卡盘.png)

• Square-Round Chuck — Biyoute dual-profile (image: 外贸/机器配置照片/比优特方圆卡盘.png)

• Auto-Focus Head — BOCI auto-focus (image: 外贸/机器配置照片/波刺自动调焦.png)

• Low-power precision laser — Optimized for thin-wall small-diameter tubes

Product Line

• product-g25-g40-capillary — G25 / G40 Capillary Series

Applications

| Domain | Specific Use | |----------|---------| | Medical Devices | Endoscope tubes, catheters, blood collection needle outer tubes | | Automotive | Fuel injection lines, sensor guard tubes | | Pneumatics & Hydraulics | Precision air tubes, micro hydraulic lines | | Electronics | Heat pipes, cooling tubes | | Precision Instruments | Measurement instrument tubing |

Sales Positioning

"The G25 cuts tubes as small as 25mm OD at ±0.05mm accuracy. For medical device manufacturers and precision automotive suppliers, this is not optional. It is the spec."

Comparison: Capillary vs. Standard

| Dimension | Capillary (G25/G40) | Standard Tube Cutter | |----------|--------------------|-----------| | Minimum OD | ~5–25mm | Typically ≥50mm | | Accuracy | ±0.05mm class | ±0.1–0.2mm | | Competition | Near-zero | Crowded | | Price Position | Premium | Standard | | Buyer Type | Precision manufacturers | General manufacturers |

Related

• Product: product-g25-g40-capillary

• Concept: concept-automation-levels

• Topics: topic-product-series-overview

Sources

• [1] QG Laser Skills README — Capillary precision as core differentiator

• [2] G25 Technical Proposal

• [3] G25 machine images

Change Log

• 2026-06-03: Tesla-style industrial English translation.

• 2026-06-02: Initial creation.