Laser Welder Focus Adjustment
09/26/2026
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The bead suddenly turns black and grey. Penetration drops. The sparks go from a steady, fine stream to something noisy
Gao Pengfei — Founder & CEO of Kaihuan Laser
I'm Gao Pengfei, founder and CEO of Kaihuan Laser. We build handheld fiber laser welding machines — 1500W, 2000W and 3000W — for metal fabricators who are done losing time to grinding and rework.I started this company for one reason: I kept meeting shop owners who were paying a premium for skilled TIG welders they could not keep, while the thin stainless and aluminum work in front of them was slow, warped and needed polishing afterwards. Handheld fiber laser welding fixes that. The machine handles the repetition; your welder handles the judgment.Today our machines run in more than 50 countries, we run our own factory in China, and more than 1.2 million fabricators follow our weld tests on social media — because we show the raw metal, not a render. I still review the technical content on this site myself, and I answer questions about laser welding directly on X and LinkedIn.I write here about the things buyers actually get stuck on: parameter setup, weld strength, lens and consumable costs, and the safety questions that come up in a real workshop.
I'm Gao Pengfei, founder and CEO of Kaihuan Laser. We build handheld fiber laser welding machines — 1500W, 2000W and 3000W — for metal fabricators who are done losing time to grinding and rework.I started this company for one reason: I kept meeting shop owners who were paying a premium for skilled TIG welders they could not keep, while the thin stainless and aluminum work in front of them was slow, warped and needed polishing afterwards. Handheld fiber laser welding fixes that. The machine handles the repetition; your welder handles the judgment.Today our machines run in more than 50 countries, we run our own factory in China, and more than 1.2 million fabricators follow our weld tests on social media — because we show the raw metal, not a render. I still review the technical content on this site myself, and I answer questions about laser welding directly on X and LinkedIn.I write here about the things buyers actually get stuck on: parameter setup, weld strength, lens and consumable costs, and the safety questions that come up in a real workshop.
How to Choose a Laser Welder
09/21/2026
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A shop posted its new 1500-watt fiber laser welder to r/Welding. The thread hit 330 upvotes, and the poster was
Are Laser Welds Strong? Don’t Judge by the Bead
09/09/2026
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A welder posted a photo of his first laser welds to r/Welding. The thread hit 498 upvotes, and the top
Handheld Laser Welder Safety: The Honest Guide
09/02/2026
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A few months ago, someone on r/Welding posted a short, worried note about handheld laser welder safety. His shop had
Laser Welding Machine Safety Precautions: 6 Rules Every Operator Must Know
08/26/2026
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Most handheld laser welders don’t die from a bad laser source. They die from small, avoidable mistakes in daily use.
How to use laser clean mode
08/24/2026
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How to Use the Laser Cleaning Mode on 3-in-1 Laser Welder The cleaning mode on a 3-in-1 laser welder removes
laser welder vs mig
08/20/2026
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Laser Welder vs MIG: The Honest, Scene-by-Scene Guide A few months ago, someone on r/Welding asked the question behind every
Causes and Solutions of Black Smoke in handheld laser welding
04/02/2026
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90%+ of black smoke issues in handheld laser welding come from three easily-troubleshooting problems: parameter mismatch, consumable wear, material contamination
Laser Welding Duty Cycle and Pulse Frequency
03/02/2026
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In the world of precision laser welding, “power” isn’t the only knob you can turn. If you want to achieve
How to Replace Laser Welder Protective Lenses: The Professional 4-Step Guide
02/03/2026
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Proper replacement of protective lenses is key to laser stability. This guide outlines 4 core standards—including hand hygiene and specific environment controls for 21T and 23T models—to prevent premature lens failure.