{"id":22983,"date":"2025-12-03T03:32:47","date_gmt":"2025-12-03T03:32:47","guid":{"rendered":"https:\/\/yonglihaomachinery.com\/?p=22983"},"modified":"2025-12-03T07:12:41","modified_gmt":"2025-12-03T07:12:41","slug":"sheet-metal-laser-cutting","status":"publish","type":"post","link":"https:\/\/yonglihaomachinery.com\/ru\/sheet-metal-laser-cutting\/","title":{"rendered":"\u041b\u0430\u0437\u0435\u0440\u043d\u0430\u044f \u0440\u0435\u0437\u043a\u0430 \u043b\u0438\u0441\u0442\u043e\u0432\u043e\u0433\u043e \u043c\u0435\u0442\u0430\u043b\u043b\u0430: \u043f\u0440\u043e\u0446\u0435\u0441\u0441, \u0442\u0438\u043f\u044b \u0438 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0438"},"content":{"rendered":"<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">At Yonglihao Machinery, a leading <a href=\"https:\/\/yonglihaomachinery.com\/\" target=\"_blank\" rel=\"noopener\"><strong>prototyping company<\/strong><\/a>, we use sheet metal laser cutting for parts needing clean geometry, repeatable accuracy, and fast turnaround. Our<a href=\"https:\/\/yonglihaomachinery.com\/laser-cutting-service\/\" target=\"_blank\" rel=\"noopener\"><strong> laser cut services<\/strong><\/a> are practical for brackets, covers, enclosures, and machine frames. They also work for many other flat-pattern components.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">In this article, I will focus on one question: what is sheet metal laser cutting? I will also explain what you should expect from it. You\u2019ll learn about the main laser types and common cutting modes. We will also cover key benefits, limits, and some design rules to prevent expensive rework.<\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">What Sheet Metal Laser Cutting Is?<\/h2>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Sheet metal laser cutting is a thermal cutting process controlled by a CNC. It uses a focused laser beam to melt or vaporize metal along a programmed path. This separates a net-shape profile from a sheet.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">In practice, you get a defined contour and a small cut gap, known as the <b><strong class=\"font-semibold\">kerf<\/strong><\/b>. The edge quality depends on the material, its thickness, the assist gas, and the machine settings.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">The &#8220;sheet metal&#8221; part is important. The process is strongest when the geometry is mostly 2D and the material is flat. The &#8220;CNC&#8221; part is also key. The cut path follows your CAD\/CAM output with high repeatability across batches.<\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">How Sheet Metal Laser Cutting Works?<\/h2>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Laser cutting works by focusing light energy into a tiny spot. This makes the local energy density high enough to melt or vaporize the metal. At the same time, CNC motion moves that hot spot along the cut line. The beam is generated, shaped by optics, and focused to a spot size. This spot size controls the energy density and cut behavior.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Assist gas is essential in real production. It clears molten material from the cut. It also protects the optics and controls oxidation and edge color. Nitrogen is common when you want minimal oxidation. Oxygen can speed up cutting on some steels, but it changes the edge condition.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">As the laser head travels, the process creates a cut wall. It also leaves a <b><strong class=\"font-semibold\">heat-affected zone (HAZ)<\/strong><\/b> near the edge. The HAZ is usually small compared to other thermal methods. Still, it exists and can affect coatings, tight fits, and thin parts that might warp.<\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Main Types of Lasers<\/h2>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Fiber Laser<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">A fiber laser is a solid-state laser. It delivers its beam through an optical fiber. This type of laser is known for high electrical efficiency and strong beam quality. It is often the best choice for steels and many non-ferrous metals. It also performs well on <b><strong class=\"font-semibold\">reflective materials like aluminum, brass, and copper<\/strong><\/b> if the machine is designed for them.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Fiber is usually picked when you need speed, stable quality, and a lower cost per part. Its practical limits appear with some thick sections. It may also struggle with parts that need a special edge finish or very low taper without extra steps.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">CO\u2082 Laser<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">A CO\u2082 laser creates an infrared beam from a gas discharge. It has been a major industrial cutting technology for a long time. It is widely used for non-metals. It can also cut some metals well, especially thinner gauges, based on machine power and setup.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">A CO\u2082 laser can be a good choice if the shop also works with non-metals. It offers a mature and well-understood platform. The main limits are typically <b><strong class=\"font-semibold\">lower efficiency<\/strong><\/b> and weaker performance on reflective metals compared to many modern fiber systems.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Crystal \/ Solid-State Laser<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Crystal or solid-state lasers, like the Nd:YAG family, use a doped solid gain medium. They can offer useful wavelengths and pulse behaviors for specific tasks. These lasers can be applied to cutting, marking, or specialized processes where beam traits are the priority.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">In sheet metal cutting, these systems are more &#8220;application-driven&#8221; than universal. They might be chosen for niche materials or special process needs. However, they are not always the most cost-effective solution for general use.<\/p>\n<table class=\"w-max table-auto border border-neutral\">\n<colgroup>\n<col \/>\n<col \/>\n<col \/>\n<col \/><\/colgroup>\n<tbody>\n<tr dir=\"ltr\">\n<th class=\"border border-neutral p-2 min-w-[48px] max-w-[400px] bg-neutral-100 text-left\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Laser type<\/p>\n<\/th>\n<th class=\"border border-neutral p-2 min-w-[48px] max-w-[400px] bg-neutral-100 text-left\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Best at<\/p>\n<\/th>\n<th class=\"border border-neutral p-2 min-w-[48px] max-w-[400px] bg-neutral-100 text-left\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Typical best-fit<\/p>\n<\/th>\n<th class=\"border border-neutral p-2 min-w-[48px] max-w-[400px] bg-neutral-100 text-left\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Common watch-outs<\/p>\n<\/th>\n<\/tr>\n<tr dir=\"ltr\">\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\"><b><strong class=\"font-semibold\">Fiber<\/strong><\/b><\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Speed + metals + reflective handling<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">General metal cutting, mixed materials<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Thickness economics vary; setup matters<\/p>\n<\/td>\n<\/tr>\n<tr dir=\"ltr\">\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\"><b><strong class=\"font-semibold\">CO\u2082<\/strong><\/b><\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Mature platform, broad non-metal use<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Shops cutting non-metals + some thin metals<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Efficiency, reflective metals limitations<\/p>\n<\/td>\n<\/tr>\n<tr dir=\"ltr\">\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\"><b><strong class=\"font-semibold\">Crystal\/solid-state<\/strong><\/b><\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Special beam behavior \/ niche processes<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Specific material\/process requirements<\/p>\n<\/td>\n<td class=\"border border-neutral p-2 min-w-[48px] max-w-[400px]\" dir=\"ltr\">\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Cost\/maintenance trade-offs vary<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Three Common Laser Cutting Modes for Sheet Metal<\/h2>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Fusion Cutting (Nitrogen\/Argon)<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Fusion cutting melts the metal. It then uses an inert gas, often nitrogen, to blow the melt out of the kerf. This process minimizes oxidation on the cut edge. It is usually preferred when edge appearance, coating adhesion, or welding quality matters.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">The trade-off is that this method can require higher gas flow. It also needs tighter process control. For stainless steel and many aluminum jobs, fusion cutting is the common default when you want &#8220;clean edges.&#8221;<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Reactive\/Flame Cutting (Oxygen)<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Reactive cutting uses oxygen as an assist gas. This adds chemical energy through oxidation. This reaction can increase cutting speed on suitable steels. It can be cost-effective when high throughput is the priority and an oxidized edge is acceptable.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">The limitation is the edge condition. If you need a bright, low-oxide edge, oxygen cutting may not be the best fit.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Sublimation Cutting<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Sublimation cutting aims to vaporize material with very little melting. This reduces dross and changes the character of the edge. For metals, it is less common than fusion or reactive cutting. It tends to be used in special cases where edge quality is more important than speed.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">This mode usually demands a tighter focus and higher process stability. This makes it a &#8220;use when justified&#8221; approach rather than a default for sheet metal.<\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Key Benefits and Practical Limits<\/h2>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Laser cutting is excellent for making complex 2D profiles. It offers repeatable geometry and puts minimal mechanical load on the part. This is why it is widely used for detailed outlines, tight radii, and dense nesting to use sheets better.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">The practical limits mostly relate to physics and cost. These include thickness, heat management, and edge requirements. You can still see a taper on thicker cuts. There might also be local discoloration or oxidation depending on the gas used. Thin sheets can warp if heat builds up in small areas.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Safety and hygiene are also important. The process creates metal fumes, coating vapors, and fine particles. These require proper extraction and disciplined operating procedures.<\/p>\n<p dir=\"ltr\"><strong>Further reading: <a href=\"https:\/\/yonglihaomachinery.com\/advantages-and-disadvantages-of-laser-cutting\/\" target=\"_blank\" rel=\"noopener\">Advantages and Disadvantages of Laser Cutting<\/a><\/strong><\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Basic Design Tips to Get Better Laser-Cut Parts<\/h2>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Good laser cutting results start in the CAD file, not at the machine. You can reduce costs by managing kerf expectations, spacing, and heat concentration. This will also help you avoid &#8220;why does this not fit?&#8221; surprises.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\"><b><strong class=\"font-semibold\">Here is a practical checklist we use when reviewing laser-cut parts:<\/strong><\/b><\/p>\n<ul class=\"pb-xxs pt-[9px] list-disc pl-5xl pt-[5px]\">\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"1\"><b><strong class=\"font-semibold\">Plan for kerf:<\/strong><\/b> Do not assume the cut line has &#8220;zero width.&#8221; Kerf affects how parts fit together, especially slots and tabs.<\/li>\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"2\"><b><strong class=\"font-semibold\">Respect minimum web\/spacing:<\/strong><\/b> Keep gaps between cuts wide enough. This helps avoid overheating and distortion.<\/li>\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"3\"><b><strong class=\"font-semibold\">Avoid tiny features on thick stock:<\/strong><\/b> Small holes, sharp internal corners, and thin bridges become unstable as thickness increases.<\/li>\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"4\"><b><strong class=\"font-semibold\">Manage internal corners:<\/strong><\/b> Add small radii when possible. This reduces local heat buildup and stress points.<\/li>\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"5\"><b><strong class=\"font-semibold\">Text and engraving:<\/strong><\/b> Keep strokes wide enough and spacing generous. This prevents characters from fusing or disappearing.<\/li>\n<li class=\"text-md font-regular leading-[24px] my-[5px] [&amp;&gt;ol]:!pb-0 [&amp;&gt;ol]:!pt-0 [&amp;&gt;ul]:!pb-0 [&amp;&gt;ul]:!pt-0\" dir=\"ltr\" value=\"6\"><b><strong class=\"font-semibold\">Heat concentration:<\/strong><\/b> Stagger features and add relief cuts. This is useful where long, tight nests cause heat to accumulate.<\/li>\n<\/ul>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Conclusion<\/h2>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">If you remember one thing, it\u2019s this: sheet metal laser cutting is controlled thermal removal. The beam, focus, assist gas, and CNC motion all work together to define the edge you get. Choose the laser type and cutting mode based on your material and edge needs. Then, design your part with kerf, spacing, and heat behavior in mind.<\/p>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">At Yonglihao Machinery, we see &#8220;what is laser cutting&#8221; as a promise of predictable results. This promise holds true when the process and the part design align. If they do not, you will still get a cut part. But you may not get the fit, finish, or flatness you expected.<\/p>\n<h2 class=\"font-semibold pdf-heading-class-replace pb-xxs text-xl leading-[40px] [&amp;:not(:first-child)]:pt-[21px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">FAQ<\/h2>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">What materials can sheet metal laser cutting handle best?<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Most common sheet metals cut well. You just need to match the parameters and gas to the material. Steels are generally simple to cut. Reflective metals like aluminum and copper need the right machine and settings to ensure a stable process.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Does laser cutting always leave a perfect edge?<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">No. Edge quality depends on the gas choice, material thickness, and process tuning. You may see oxide color, minor dross, or taper if the setup and expectations do not match.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">What is kerf, and why does it affect fit?<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Kerf is the width of material removed by the laser. It changes the final dimensions of the part. If you design slots, tabs, or tight press-fits without thinking about kerf, your assemblies might be too loose or too tight.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">Why do thin parts warp during laser cutting?<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Warping usually comes from uneven heat input and the release of residual stress. Dense nesting, long continuous cuts, and tiny bridges can concentrate heat. This can pull the sheet out of its flat plane.<\/p>\n<h3 class=\"font-semibold pdf-heading-class-replace pb-xxs text-lg leading-[30px] [&amp;:not(:first-child)]:pt-[15px] [&amp;_.underline]:underline-offset-[6px] [&amp;_a]:underline-offset-[6px]\" dir=\"ltr\">How do I pick between nitrogen and oxygen assist?<\/h3>\n<p class=\"text-md font-regular leading-[24px] pb-xxs pt-[9px]\" dir=\"ltr\">Pick nitrogen when you want minimal oxidation and cleaner edges. Pick oxygen when speed on suitable steels is important and an oxidized edge is acceptable. 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