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How to Prevent Aluminum Corrosion: 5 Core Methods

Aluminum corrodes — differently from steel, but it corrodes. The natural Al₂O₃ passive layer that forms spontaneously on aluminum’s surface in air provides good corrosion resistance in most environments, but it fails in specific conditions: high-pH environments (alkaline solutions above pH 9), low-pH environments (acids below pH 4), chloride-rich environments…

Can You Use Compressed Air to Laser Cut Aluminum?

Yes — compressed air laser cutting of aluminum works, and for certain applications it is the correct choice. For others, it is a process compromise that creates downstream problems more expensive than the gas cost it saves. The answer depends entirely on what the cut edge must do after cutting:…

Why Your Laser Nozzle Keeps Crashing on Thin Aluminum Sheets

Nozzle crashes on thin aluminum are not random failures. They follow a predictable sequence: the sheet warps upward during cutting, the height sensor either misses the warp entirely or cannot respond fast enough, the nozzle hits the lifted material, and the cutting head sustains damage ranging from a bent nozzle…

Preventing Micro-Cracking When Laser Cutting Aerospace Aluminum Alloys

Micro-cracking at laser cut edges is not a common failure mode on the 6061 and 5052 aluminum that most fabrication shops run. It becomes a concern specifically when cutting the high-strength aluminum alloys used in aerospace structures: 7075-T6, 2024-T3, and 7068. These alloys have yield strengths two to three times…

Troubleshooting Rough, Jagged, or Serrated Edges on Laser-Cut Aluminum

Rough edges on laser-cut aluminum fall into three distinct failure patterns that require different fixes. Treating them as the same problem — “just increase the power” or “clean the optics” — wastes test material and time. The diagnostic step comes first: look at what the edge actually looks like before…

Choosing the Best Assist Gas for Laser Cutting 6061 vs. 5052 Aluminum

The assist gas decision for aluminum laser cutting is not simply “nitrogen or air?” The correct answer depends on the alloy, the required edge quality, the downstream process, and the production economics — and 6061 and 5052 respond differently enough to assist gas that treating them identically leads to predictable…

Is It Safe to Cut Reflective Aluminum with a Standard Fiber Laser?

The short answer: yes, with caveats. Standard fiber lasers cut aluminum routinely, including polished and mirror-finish aluminum. The caveats concern back-reflection damage to the laser source — a real risk that is specific to fiber lasers and essentially absent in CO₂ lasers — and the parameter approach required to initiate…

How to Stop Aluminum Dross from Welding to the Bottom Edge

Aluminum dross in laser cutting is different from stainless steel dross in one important way: it is often not the metal that is causing the problem — it is the oxide. Aluminum’s natural surface oxide, Al₂O₃, melts at 2,072°C while the aluminum beneath it melts at 660°C. During cutting, the…

Preventing Protective Lens Burnout During Stainless Piercing

The protective window in a laser cutting head is the sacrificial optical element that absorbs contamination before it reaches the focusing lens above it. When a protective window fails catastrophically — burning through rather than simply fouling — the contamination that was meant to be intercepted reaches the focusing lens.…

Is 304 Easier to Laser Cut Than 316? A Fabricator’s Guide

Yes — 304 stainless is marginally easier to laser cut than 316 at equivalent thickness, and the margin increases with thickness. The difference is small enough that most shops run identical parameters for both grades at gauges below 4 mm without noticeable quality change. Above 6 mm, the difference becomes…

Category: Laser Cutting Blog

How to Prevent Aluminum Corrosion: 5 Core Methods

Can You Use Compressed Air to Laser Cut Aluminum?

Why Your Laser Nozzle Keeps Crashing on Thin Aluminum Sheets

Preventing Micro-Cracking When Laser Cutting Aerospace Aluminum Alloys

Troubleshooting Rough, Jagged, or Serrated Edges on Laser-Cut Aluminum

Choosing the Best Assist Gas for Laser Cutting 6061 vs. 5052 Aluminum

Is It Safe to Cut Reflective Aluminum with a Standard Fiber Laser?

How to Stop Aluminum Dross from Welding to the Bottom Edge

Preventing Protective Lens Burnout During Stainless Piercing

Is 304 Easier to Laser Cut Than 316? A Fabricator’s Guide

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