{"id":65955,"date":"2026-01-07T10:00:44","date_gmt":"2026-01-07T02:00:44","guid":{"rendered":"https:\/\/www.elstarled.com\/?p=65955"},"modified":"2026-05-12T15:20:13","modified_gmt":"2026-05-12T07:20:13","slug":"how-to-cut-cob-led-strip","status":"publish","type":"post","link":"https:\/\/www.elstarled.com\/ar\/how-to-cut-cob-led-strip\/","title":{"rendered":"How to Cut a COB LED Strip: Find the Cut Marks and Reconnect It"},"content":{"rendered":"<div class=\"toc\" aria-label=\"\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a\">\n<div class=\"toc-title\"><strong>\u062c\u062f\u0648\u0644 \u0627\u0644\u0645\u062d\u062a\u0648\u064a\u0627\u062a<\/strong><\/div>\n<ol>\n<li><a href=\"#fast-answer-where-to-cut-a-cob-led-strip-and-what-to-do-right-after-cutting\">Where to Cut a COB LED Strip<\/a><\/li>\n<li><a href=\"#before-you-cut-identify-your-cob-strip-type-segmented-vs-free-cut-channels-waterproof\">Before You Cut<\/a><\/li>\n<li><a href=\"#where-you-can-cut-a-cob-led-strip-safely-cut-marks-copper-pads-and-segment-logic\">Safe Cut Marks and Copper Pads<\/a><\/li>\n<li><a href=\"#step-by-step-how-to-cut-a-cob-led-strip-cleanly-and-test-the-segment\">Step-by-Step Cutting Workflow<\/a><\/li>\n<li><a href=\"#after-cutting-reconnect-or-extend-the-cob-strip-solder-vs-solderless-connectors\">Reconnect After Cutting<\/a><\/li>\n<li><a href=\"#cutting-waterproof-ip-rated-cob-led-strips-how-to-reseal-the-cut-end\">Cutting Waterproof COB Strips<\/a><\/li>\n<li><a href=\"#if-it-doesnt-light-after-cutting-troubleshooting-checklist-first-checks-in-order\">Troubleshooting After Cutting<\/a><\/li>\n<li><a href=\"#multi-channel-cob-strips-cctrgbrgbwaddressable-prevent-wiring-and-controller-mistakes\">Multi-Channel COB Strip Checks<\/a><\/li>\n<li><a href=\"#planning-power-feeds-after-segmenting-brightness-consistency-for-projects\">Power Feeds After Segmenting<\/a><\/li>\n<li><a href=\"#faq-cob-led-strip-cutting\">\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/a><\/li>\n<li><a href=\"#summary-and-next-steps-project-checklist\">Summary and Next Steps<\/a><\/li>\n<\/ol>\n<\/div>\n<h1>How to Cut a COB LED Strip<\/h1>\n<p>If you need to know <strong>how to cut a COB LED strip<\/strong>, start by finding the printed cut marks. Most COB LED strips can only be cut at these marked points. Therefore, do not cut between marks unless the product is clearly labeled as free-cut or cut-anywhere.<\/p>\n<p>Also, remember that cutting is only the first step. After you cut, you may need to test the segment, reconnect it, protect the copper pads, or reseal the end if the strip is waterproof.<\/p>\n<h2 id=\"fast-answer-where-to-cut-a-cob-led-strip-and-what-to-do-right-after-cutting\"><strong>Where to Cut a COB LED Strip and What to Do After Cutting<\/strong><\/h2>\n<p>You can cut most COB LED strips only at the marked cut points. These marks often use a scissor icon or printed line near copper pads. After cutting, test the segment before final mounting.<\/p>\n<h3>Safe cutting table<\/h3>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Do<\/th>\n<th>Do Not<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Cut only on the printed cut line or scissor mark.<\/td>\n<td>Do not cut between marks unless the datasheet allows it.<\/td>\n<\/tr>\n<tr>\n<td>Keep the cut straight and protect the copper pads.<\/td>\n<td>Do not crush or tear the strip with dull tools.<\/td>\n<\/tr>\n<tr>\n<td>Test the cut segment before installing it in a profile.<\/td>\n<td>Do not hide the strip first and troubleshoot later.<\/td>\n<\/tr>\n<tr>\n<td>Reseal the cut end if the strip is IP-rated.<\/td>\n<td>Do not assume waterproofing remains intact after cutting.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Micro workflow<\/h3>\n<ol>\n<li>First, power off the strip and confirm the marked cut point.<\/li>\n<li>Next, cut straight on the mark and keep the copper pads usable.<\/li>\n<li>Then, bench-test the segment before final mounting.<\/li>\n<li>Finally, if the strip is waterproof, reseal the cut end and test again.<\/li>\n<\/ol>\n<h3>Important limits<\/h3>\n<ul>\n<li>Cut spacing, pad layout, and labels vary by model.<\/li>\n<li>Also, free-cut COB strips are special products, not the default.<\/li>\n<li>Therefore, follow the printed marks and the model datasheet when available.<\/li>\n<\/ul>\n<h2 id=\"before-you-cut-identify-your-cob-strip-type-segmented-vs-free-cut-channels-waterproof\"><strong>Before You Cut: Identify Your COB Strip Type<\/strong><\/h2>\n<p>Before cutting, identify the strip type. This step helps you avoid a cut that damages the circuit, removes the pads, or creates wiring problems later.<\/p>\n<h3>Fast identification checks<\/h3>\n<ul>\n<li>First, check whether the strip is standard segmented or documented free-cut.<\/li>\n<li>Next, check whether it is single-color, CCT, RGB, RGBW, or addressable.<\/li>\n<li>Also, check whether the strip has coating, sleeve, or waterproof encapsulation.<\/li>\n<li>Finally, check whether the copper pads are visible and usable after cutting.<\/li>\n<\/ul>\n<h3>Segmented vs free-cut table<\/h3>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>\u0627\u0644\u0646\u0648\u0639<\/th>\n<th>What it means for cutting<\/th>\n<th>What to verify<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Standard segmented COB strip<\/td>\n<td>Cut only at marked cut points for each segment.<\/td>\n<td>Confirm cut mark location and copper pad layout.<\/td>\n<\/tr>\n<tr>\n<td>Free-cut \/ cut-anywhere COB variant<\/td>\n<td>May allow finer trimming than standard strips.<\/td>\n<td>Verify the datasheet, cut diagram, and connection method.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Why strip type matters<\/h3>\n<p>Single-color strips usually need only positive and negative pads. However, CCT, RGB, RGBW, and addressable strips need more channels or data lines. As a result, wiring mistakes become more likely after cutting.<\/p>\n<p><strong>Boundary conditions:<\/strong> Multi-channel and waterproof strips add risk. Therefore, use the wiring diagram and reseal method for the exact product series.<\/p>\n<h2 id=\"where-you-can-cut-a-cob-led-strip-safely-cut-marks-copper-pads-and-segment-logic\"><strong>Where You Can Cut a COB LED Strip Safely<\/strong><\/h2>\n<p>Most COB strips are designed to be cut at specific cut points. These points keep the segment electrically valid and leave copper pads for a connector or soldered lead.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-65958\" src=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-1024x683.webp\" alt=\"Close-up of a COB LED strip with a cut mark and copper pads for connector or solder points\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-1024x683.webp 1024w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-300x200.webp 300w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-18x12.webp 18w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-219x146.webp 219w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-50x33.webp 50w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup-113x75.webp 113w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_strip_cut_mark_and_copper_pads_closeup.webp 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3>What safe-to-cut means<\/h3>\n<ul>\n<li>First, look for a printed cut line, scissor icon, or \u201ccut here\u201d mark.<\/li>\n<li>Next, check that copper pads remain on the segment you plan to keep.<\/li>\n<li>Also, check polarity or channel labels near the pads.<\/li>\n<li>Finally, cut only where the circuit is designed to separate.<\/li>\n<\/ul>\n<h3>Why copper pads matter<\/h3>\n<p>Copper pads are the contact area for solderless connectors or soldered wires. If you cut them off or damage them, reconnection becomes harder. Therefore, keep the cut straight and centered on the approved mark.<\/p>\n<h3>Helpful reference<\/h3>\n<p>Many LED strip guides show the same basic rule: cut through the marked line near copper pads. For an example, see <a href=\"https:\/\/www.superbrightleds.com\/blog\/how-to-cut-led-strip-lights.html\" target=\"_blank\" rel=\"noopener noreferrer\">Super Bright LEDs \u2014 How to Cut LED Strip Lights<\/a>.<\/p>\n<p><strong>Boundary conditions:<\/strong> Do not rely on a universal cut interval. Cut pitch and pad layout are model-specific.<\/p>\n<h2 id=\"step-by-step-how-to-cut-a-cob-led-strip-cleanly-and-test-the-segment\"><strong>Step-by-Step: How to Cut a COB LED Strip Cleanly<\/strong><\/h2>\n<p>The safest way to cut a COB strip is to power off, cut on the mark, protect the pads, and test the segment before final installation.<\/p>\n<h3>Cutting steps<\/h3>\n<ol>\n<li>First, disconnect the power supply and controller.<\/li>\n<li>Next, measure your needed length and choose the nearest valid cut point.<\/li>\n<li>Then, flatten the strip so it does not twist at the cut point.<\/li>\n<li>After that, cut straight on the printed mark with a sharp tool.<\/li>\n<li>Also, inspect the copper pads and make sure they are not torn.<\/li>\n<li>Finally, bench-test the segment before mounting it in a channel or profile.<\/li>\n<\/ol>\n<h3>What to check after the cut<\/h3>\n<ul>\n<li>The cut is straight.<\/li>\n<li>Also, the copper pads remain usable.<\/li>\n<li>Next, the strip lights as expected during a short test.<\/li>\n<li>Finally, the strip does not flicker when the lead or connector is moved gently.<\/li>\n<\/ul>\n<h3>Common cutting mistake<\/h3>\n<p>Do not cut between marks just to get an exact length. Instead, adjust the layout to the closest valid cut point or use a jumper section if the project allows it.<\/p>\n<p><strong>Boundary conditions:<\/strong> Waterproof or coated strips may need extra pad prep and resealing after cutting.<\/p>\n<h2 id=\"after-cutting-reconnect-or-extend-the-cob-strip-solder-vs-solderless-connectors\"><strong>After Cutting: Reconnect or Extend the COB Strip<\/strong><\/h2>\n<p>You do not always need to solder after cutting. Solderless connectors are faster. However, soldering can be stronger when the joint must last through vibration, movement, or long-term use.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-65959\" src=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-1024x683.webp\" alt=\"COB LED strip cut end with solderless connector alignment and soldered pigtail option\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-1024x683.webp 1024w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-300x200.webp 300w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-18x12.webp 18w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-219x146.webp 219w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-50x33.webp 50w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail-113x75.webp 113w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/cob_reconnect_connector_vs_solder_pigtail.webp 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3>Solder vs solderless table<\/h3>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>\u0627\u0644\u0637\u0631\u064a\u0642\u0629<\/th>\n<th>Best for<\/th>\n<th>Trade-off<\/th>\n<th>Watch for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Solderless connector<\/td>\n<td>Fast field work, simple cuts, and rework<\/td>\n<td>Must match pad layout and strip width<\/td>\n<td>Flicker from poor contact or misalignment<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u0644\u062d\u0627\u0645<\/td>\n<td>Permanent installs and stronger joints<\/td>\n<td>Needs tools and skill<\/td>\n<td>Pad damage from too much heat<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Solderless workflow<\/h3>\n<ol>\n<li>First, confirm polarity and channel order at the cut end.<\/li>\n<li>Next, slide the strip into the connector so contacts sit on the copper pads.<\/li>\n<li>Then, lock the connector fully.<\/li>\n<li>Also, add strain relief to the cable.<\/li>\n<li>Finally, bench-test before final mounting.<\/li>\n<\/ol>\n<h3>Solder workflow<\/h3>\n<ol>\n<li>First, confirm polarity, channels, and clean pads.<\/li>\n<li>Next, solder leads with minimal heat exposure.<\/li>\n<li>Then, keep joints low-profile and insulated.<\/li>\n<li>Finally, add strain relief and test before installing the strip.<\/li>\n<\/ol>\n<h3>Helpful reference<\/h3>\n<p>LEDVANCE also explains connector and soldering as common strip connection methods here: <a href=\"https:\/\/ledvance.com\/en-us\/professional-lighting\/insights\/blog\/how-to\/how-to-cut-led-light-strips\" target=\"_blank\" rel=\"noopener noreferrer\">LEDVANCE \u2014 How to cut LED light strips<\/a>.<\/p>\n<p><strong>Boundary conditions:<\/strong> Connector fit is not universal. Therefore, verify strip width, pad layout, pin count, and coating before buying connectors in volume.<\/p>\n<h2 id=\"cutting-waterproof-ip-rated-cob-led-strips-how-to-reseal-the-cut-end\"><strong>Cutting Waterproof COB LED Strips: How to Reseal the Cut End<\/strong><\/h2>\n<p>You can often cut waterproof COB strips at marked points. However, you must reseal the cut end if the strip will stay in a damp, wet, or outdoor area.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"aligncenter size-large wp-image-65960\" src=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-1024x683.png\" alt=\"Waterproof COB LED strip cut end with resealing and strain relief concept\" width=\"1024\" height=\"683\" srcset=\"https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-1024x683.png 1024w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-300x200.png 300w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-18x12.png 18w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-219x146.png 219w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-50x33.png 50w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief-113x75.png 113w, https:\/\/www.elstarled.com\/wp-content\/uploads\/2026\/01\/waterproof_cob_cut_end_reseal_strain_relief.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/p>\n<h3>Waterproof cutting steps<\/h3>\n<ol>\n<li>First, power off and cut only at the marked cut point.<\/li>\n<li>Next, reconnect and test electrically before sealing.<\/li>\n<li>Then, reseal the end using the approved method for that construction.<\/li>\n<li>Also, add strain relief so movement does not crack the seal.<\/li>\n<li>Finally, retest after sealing.<\/li>\n<\/ol>\n<h3>Reseal checklist<\/h3>\n<ul>\n<li>The seal fully covers the cut end.<\/li>\n<li>Also, no copper or conductor is exposed.<\/li>\n<li>Next, the cable or connector is strain-relieved.<\/li>\n<li>Finally, the segment still works after resealing.<\/li>\n<\/ul>\n<h3>IP reference<\/h3>\n<p>IP ratings describe protection against solids and liquids under defined rules. For background, see the <a href=\"https:\/\/www.iec.ch\/ip-ratings\" target=\"_blank\" rel=\"noopener noreferrer\">IEC ingress protection overview<\/a>.<\/p>\n<p><strong>Boundary conditions:<\/strong> Do not assume the original IP rating is restored after cutting. The result depends on the strip build and reseal method.<\/p>\n<h2 id=\"if-it-doesnt-light-after-cutting-troubleshooting-checklist-first-checks-in-order\"><strong>If It Doesn\u2019t Light After Cutting: Troubleshooting Checklist<\/strong><\/h2>\n<p>Most post-cut problems come from cutting off-mark, damaging pads, poor connector contact, or polarity mistakes. Therefore, check the simple causes first.<\/p>\n<h3>Symptom triage table<\/h3>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Symptom<\/th>\n<th>Likely cause<\/th>\n<th>First check<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Segment is dead<\/td>\n<td>Cut not on a valid mark<\/td>\n<td>Check the cut line and pad area<\/td>\n<\/tr>\n<tr>\n<td>Flicker<\/td>\n<td>Weak connector contact<\/td>\n<td>Re-seat the connector and add strain relief<\/td>\n<\/tr>\n<tr>\n<td>Only some colors work<\/td>\n<td>Channel or pin mapping error<\/td>\n<td>Check strip labels and controller output<\/td>\n<\/tr>\n<tr>\n<td>Works on bench but fails after mounting<\/td>\n<td>Stress on cut end or connector<\/td>\n<td>Check bends, pressure, and strain relief<\/td>\n<\/tr>\n<tr>\n<td>Uneven brightness<\/td>\n<td>Feed or wiring issue<\/td>\n<td>Check feed points before closing profiles<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>First checks in order<\/h3>\n<ol>\n<li>First, check whether you cut exactly on the marked cut line.<\/li>\n<li>Next, check whether pads are clean, intact, and not lifted.<\/li>\n<li>Then, check connector seating or solder quality.<\/li>\n<li>Also, check polarity and channel order.<\/li>\n<li>After that, check the power supply and controller match.<\/li>\n<li>Finally, isolate one segment and test one change at a time.<\/li>\n<\/ol>\n<h3>When to stop and rework<\/h3>\n<p>If pads are torn, contacts are dirty, or the strip flickers when moved, stop and fix the joint before installation. Otherwise, the same fault may return after the strip is hidden.<\/p>\n<p><strong>Boundary conditions:<\/strong> Multi-channel and addressable strips add mapping risks. Therefore, use the exact wiring guide.<\/p>\n<h2 id=\"multi-channel-cob-strips-cctrgbrgbwaddressable-prevent-wiring-and-controller-mistakes\"><strong>Multi-Channel COB Strips: CCT, RGB, RGBW, and Addressable<\/strong><\/h2>\n<p>Multi-channel strips have more conductors and more controller rules. As a result, wrong wiring is easier after cutting. Therefore, confirm the channel order before final installation.<\/p>\n<h3>What to confirm by strip type<\/h3>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>Strip type<\/th>\n<th>Confirm before reconnecting<\/th>\n<th>Bench test<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Single color<\/td>\n<td>Positive\/negative polarity<\/td>\n<td>Lights at expected brightness<\/td>\n<\/tr>\n<tr>\n<td>CCT<\/td>\n<td>Warm, cool, and common wiring<\/td>\n<td>Warm and cool channels both work<\/td>\n<\/tr>\n<tr>\n<td>RGB \/ RGBW<\/td>\n<td>Channel order and controller output type<\/td>\n<td>Each color channel works correctly<\/td>\n<\/tr>\n<tr>\n<td>Addressable<\/td>\n<td>Data direction, protocol, and controller support<\/td>\n<td>Data\/control works on a short segment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Safe workflow<\/h3>\n<ul>\n<li>First, label wires at the cut end.<\/li>\n<li>Next, connect and test one short segment.<\/li>\n<li>Then, verify each channel or function on the bench.<\/li>\n<li>Finally, keep the model wiring diagram with the installer notes.<\/li>\n<\/ul>\n<p><strong>Boundary conditions:<\/strong> Do not copy pinouts across product families. Instead, use the exact model\u2019s wiring guide.<\/p>\n<h2 id=\"planning-power-feeds-after-segmenting-brightness-consistency-for-projects\"><strong>Planning Power Feeds After Segmenting<\/strong><\/h2>\n<p>Segmenting changes wiring paths and feed points. Therefore, plan power feeds before closing profiles or channels.<\/p>\n<h3>Power planning steps<\/h3>\n<ul>\n<li>First, divide the layout into zones and segments.<\/li>\n<li>Next, decide where wires can enter the strip runs.<\/li>\n<li>Also, avoid long daisy chains when uniform brightness matters.<\/li>\n<li>Then, test brightness consistency before closing the channel.<\/li>\n<li>Finally, keep a simple wiring map for installers and maintenance.<\/li>\n<\/ul>\n<h3>Why power feeds matter<\/h3>\n<p>If a long segment gets power only from one end, the far end may look dimmer. As a result, the project can look uneven even when the strip itself is not faulty.<\/p>\n<p><strong>Boundary conditions:<\/strong> There is no universal maximum run length. It depends on strip voltage, load, wiring, and layout.<\/p>\n<h2 id=\"faq-cob-led-strip-cutting\"><strong>FAQ: COB LED Strip Cutting<\/strong><\/h2>\n<h3>Can I cut a COB LED strip?<\/h3>\n<p>Yes, most COB LED strips can be cut. However, cut only at the marked cut points unless the strip is clearly documented as free-cut.<\/p>\n<h3>Where can you cut a COB LED strip safely?<\/h3>\n<p>Cut on the printed cut line or scissor mark near copper pads. Also, keep the pads intact so the strip can be reconnected.<\/p>\n<h3>Can you cut a COB LED strip anywhere?<\/h3>\n<p>Usually, no. Standard segmented COB strips must be cut at marked points. Free-cut strips are special products and should be verified by datasheet.<\/p>\n<h3>Do you need to solder COB LED strips after cutting?<\/h3>\n<p>Not always. Solderless connectors can work when they match the strip width, pad layout, pin count, and coating. However, soldering is often stronger when the joint must last.<\/p>\n<h3>Why doesn\u2019t my COB LED strip work after I cut it?<\/h3>\n<p>Common causes include cutting off-mark, damaging copper pads, poor connector contact, or reversed polarity. Therefore, check the cut mark, pads, connector, and wiring order first.<\/p>\n<h3>Can you cut waterproof COB LED strips?<\/h3>\n<p>Often, yes, at marked cut points. However, the cut end must be resealed using the approved method if the strip will be used in a wet or outdoor area.<\/p>\n<h2 id=\"summary-and-next-steps-project-checklist\"><strong>Summary and Next Steps<\/strong><\/h2>\n<p>Cutting a COB LED strip is simple when you follow the marked cut points, protect the copper pads, and test before final installation. Most problems come from cutting off-mark, weak contact, wrong polarity, or skipped resealing.<\/p>\n<h3>Project checklist<\/h3>\n<ul>\n<li>First, confirm whether the strip is segmented or documented free-cut.<\/li>\n<li>Next, verify cut marks and copper pad layout.<\/li>\n<li>Also, choose solder or connector based on project risk.<\/li>\n<li>Then, bench-test each segment before closing profiles.<\/li>\n<li>Finally, reseal IP-rated strips and add strain relief.<\/li>\n<\/ul>\n<h3>When to ask for supplier support<\/h3>\n<ul>\n<li>Ask for a cut diagram when exact lengths matter.<\/li>\n<li>Also, ask for wiring diagrams for CCT, RGB, RGBW, or addressable strips.<\/li>\n<li>In addition, ask for connector fit notes if you plan to use solderless clips.<\/li>\n<li>Finally, ask for waterproof reseal notes before cutting IP-rated strips.<\/li>\n<\/ul>\n<div class=\"conversion\" data-nosnippet=\"\">\n<p>For project orders or distributor support, keep the model documents aligned with the installation workflow. If you need a model-specific cut diagram, wiring diagram, connector fit guidance, or waterproof reseal notes, you can start at: <a href=\"https:\/\/www.elstarled.com\/ar\/\" target=\"_blank\" rel=\"noopener noreferrer\">Elstar LED strip &amp; COB manufacturing<\/a>.<\/p>\n<\/div>\n<p class=\"back-to-top\"><a href=\"#top\" aria-label=\"Back to top\">Top<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Table of Contents Where to Cut a COB LED Strip Before You Cut Safe Cut Marks and Copper Pads Step-by-Step Cutting Workflow Reconnect After Cutting Cutting<span class=\"excerpt-hellip\"> [...]<\/span><\/p>","protected":false},"author":4,"featured_media":65957,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[515],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v20.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to Cut a COB LED 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