{"id":1345,"date":"2026-06-23T08:18:41","date_gmt":"2026-06-23T08:18:41","guid":{"rendered":"https:\/\/xflsrmolding.com\/?p=1345"},"modified":"2026-06-23T08:33:17","modified_gmt":"2026-06-23T08:33:17","slug":"lsr-molding-what-actually-matters-in-mold-design","status":"publish","type":"post","link":"https:\/\/xflsrmolding.com\/lt\/lsr-molding-what-actually-matters-in-mold-design\/","title":{"rendered":"LSR liejimas: kas i\u0161 ties\u0173 svarbu formos projektavime"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"1345\" class=\"elementor elementor-1345\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49d0cdf3 e-flex e-con-boxed e-con e-parent\" data-id=\"49d0cdf3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5ff0bc83 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href=\"https:\/\/xflsrmolding.com\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Home<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/xflsrmolding.com\/blog\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Blog<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-right\" viewBox=\"0 0 320 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M285.476 272.971L91.132 467.314c-9.373 9.373-24.569 9.373-33.941 0l-22.667-22.667c-9.357-9.357-9.375-24.522-.04-33.901L188.505 256 34.484 101.255c-9.335-9.379-9.317-24.544.04-33.901l22.667-22.667c9.373-9.373 24.569-9.373 33.941 0L285.475 239.03c9.373 9.372 9.373 24.568.001 33.941z\"><\/path><\/svg>\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Liquid Silicone Rubber Molding vs HTV Silicone<\/span>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-208800c3 e-flex e-con-boxed e-con e-parent\" data-id=\"208800c3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7614342f elementor-widget elementor-widget-heading\" data-id=\"7614342f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">LSR Molding: What Actually Matters in Mold Design<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2cef791e e-flex e-con-boxed e-con e-parent\" data-id=\"2cef791e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6186db17 elementor-share-buttons--view-icon elementor-share-buttons--shape-rounded elementor-share-buttons--skin-gradient elementor-grid-0 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27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-grid-item\">\n\t\t\t\t\t\t<div\n\t\t\t\t\t\t\tclass=\"elementor-share-btn elementor-share-btn_linkedin\"\n\t\t\t\t\t\t\trole=\"button\"\n\t\t\t\t\t\t\ttabindex=\"0\"\n\t\t\t\t\t\t\taria-label=\"Share on linkedin\"\n\t\t\t\t\t\t>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-share-btn__icon\">\n\t\t\t\t\t\t\t\t<svg class=\"e-font-icon-svg 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data-widget_type=\"table-of-contents.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__3e2e6438\" aria-expanded=\"true\" aria-label=\"Open table of contents\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button 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srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide.jpg 1536w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-300x200.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-1024x683.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-768x512.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/LSR-Molding-Design-Guide-18x12.jpg 18w\" sizes=\"(max-width: 1536px) 100vw, 1536px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-25bfd9c7 e-flex e-con-boxed e-con e-parent\" data-id=\"25bfd9c7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2d4aed6f elementor-widget elementor-widget-text-editor\" data-id=\"2d4aed6f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">If you work with <a href=\"https:\/\/xflsrmolding.com\/markets\/\"><strong>LSR molding<\/strong><\/a>, you already know this: the mold decides everything. Material, machine, and settings help\u2014but if the mold design is off, nothing else saves the part.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">I\u2019ve seen molds that looked perfect on paper fail in the first trial. Usually not because of big mistakes, but small details\u2014temperature drift, poor vent depth, or a cold runner that wasn\u2019t really \u201ccold.\u201d<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">This guide walks through the key areas that tend to cause real problems in production.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1dd70e7 e-flex e-con-boxed e-con e-parent\" data-id=\"1dd70e7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-591d3f51 elementor-widget elementor-widget-text-editor\" data-id=\"591d3f51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"cold-runner-in-lsr-molding-temperature-separation\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Cold Runner in LSR Molding: Temperature Separation First<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cold runner design is where many projects go wrong early.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR is not like thermoplastics. Once it gets warm, it starts to cure. So you need strict separation:<\/p><h3 id=\"three-zones-you-must-control\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Three zones you must control<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cold side (around 20\u00b0C): keeps material stable before injection<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Hot side (120\u2013170\u00b0C typical): cures the part<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Insulation layer: prevents heat transfer between the two<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">In one project for a baby bottle valve, the runner plate temperature crept above 30\u00b0C. The result? Partial curing inside the runner. We had blocked gates after just a few cycles.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">The fix was simple in theory: add proper cooling channels and improve insulation. In practice, that meant reworking the entire plate.<\/p><h3 id=\"what-to-watch\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What to watch<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Cooling channels in the nozzle are not optional<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Titanium insulation plates help reduce heat transfer<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Valve gate control matters, especially for parts under 1 gram<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f6b442b e-flex e-con-boxed e-con e-parent\" data-id=\"4f6b442b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-722891fe elementor-widget elementor-widget-text-editor\" data-id=\"722891fe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"venting-design-in-lsr-molding-microns-matter\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Venting Design in LSR Molding: Microns Matter<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR flows easily. That\u2019s good for filling\u2014but bad for venting.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">If your vent is too deep, you get flash. Too shallow, you trap air.<\/p><h3 id=\"practical-vent-range\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Practical vent range<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Depth: 0.004\u20130.005 mm works in most cases<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Width: 1\u20133 mm<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Location: last fill area (use flow analysis, not guesswork)<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">We once had a medical seal with random burn marks. The vents were \u201cstandard,\u201d but not placed correctly. After running Moldflow, we found the real air trap was on the opposite side.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Adding a vent there solved the issue without touching the process.<\/p><h3 id=\"when-venting-is-not-enough\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">When venting is not enough<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">For complex parts, vacuum helps a lot. Pulling down to about \u22120.09 MPa before injection can remove most trapped air.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6263cc0 e-flex e-con-boxed e-con e-parent\" data-id=\"6263cc0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ecb61a1 elementor-widget elementor-widget-heading\" data-id=\"ecb61a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Related Articles\uff1a<\/h3>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2737b93 e-flex e-con-boxed e-con e-parent\" data-id=\"2737b93\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7a0233b elementor-grid-4 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-portfolio\" data-id=\"7a0233b\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns&quot;:&quot;4&quot;,&quot;item_ratio&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:0.7,&quot;sizes&quot;:[]},&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:15,&quot;sizes&quot;:[]},&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;item_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"portfolio.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-portfolio elementor-grid elementor-posts-container\">\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1399 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/lt\/medical-lsr-molding-prevent-mold-defects\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img decoding=\"async\" width=\"1413\" height=\"1113\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding.jpg\" class=\"attachment-full size-full wp-image-1401\" alt=\"Medical LSR Molding: Preventing Mold Defects\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding.jpg 1413w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-300x236.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-1024x807.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-768x605.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/medical-lsr-molding-15x12.jpg 15w\" sizes=\"(max-width: 1413px) 100vw, 1413px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tHow Medical LSR Molding Companies Prevent Mold Defects\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1386 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/lt\/custom-liquid-silicone-molding-complex-parts\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img decoding=\"async\" width=\"1413\" height=\"1113\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding.jpg\" class=\"attachment-full size-full wp-image-1395\" alt=\"Custom Liquid Silicone Molding for Complex Parts\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding.jpg 1413w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-300x236.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-1024x807.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-768x605.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/08\/custom-liquid-silicone-molding-15x12.jpg 15w\" sizes=\"(max-width: 1413px) 100vw, 1413px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tHow We Turn Complex Designs Into Production-Ready Parts\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1376 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/lt\/medical-grade-lsr-molding-what-most-teams-miss-before-tooling\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1254\" height=\"1254\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review.jpg\" class=\"attachment-full size-full wp-image-1378\" alt=\"medical grade LSR molding cold runner system\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review.jpg 1254w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-300x300.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-1024x1024.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-150x150.jpg 150w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-768x768.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/07\/medical-grade-lsr-molding-design-review-12x12.jpg 12w\" sizes=\"(max-width: 1254px) 100vw, 1254px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tMedical Grade LSR Molding: What Most Teams Miss Before Tooling\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1362 post type-post status-publish format-standard has-post-thumbnail hentry category-uncategorized\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/xflsrmolding.com\/lt\/silicone-parts-why-lsr-molding-companies-fail-and-how-to-choose-right\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"720\" src=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure.jpg\" class=\"attachment-full size-full wp-image-1371\" alt=\"lsr silicone valve mold design structure\" srcset=\"https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure.jpg 1080w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-300x200.jpg 300w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-1024x683.jpg 1024w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-768x512.jpg 768w, https:\/\/xflsrmolding.com\/wp-content\/uploads\/2026\/06\/lsr_silicone_valve_mold_design_structure-18x12.jpg 18w\" sizes=\"(max-width: 1080px) 100vw, 1080px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tWhy LSR Molding Companies Fail And How to Choose Right\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-69a9e8d3 e-flex e-con-boxed e-con e-parent\" data-id=\"69a9e8d3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c09bcbc elementor-widget elementor-widget-text-editor\" data-id=\"2c09bcbc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"shrinkage-in-lsr-molding-not-a-fixed-number\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Shrinkage in LSR Molding: Not a Fixed Number<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">A common assumption: shrinkage is 2.5%. Just scale the mold.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">That works\u2014until it doesn\u2019t.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR shrinks after demolding, not during packing like thermoplastics. So you don\u2019t \u201cfix\u201d size with pressure.<\/p><h3 id=\"what-actually-affects-shrinkage\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What actually affects shrinkage<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Flow direction (higher along flow)<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Wall thickness (thin sections shrink more)<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Mold temperature<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Demold temperature<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Post-curing<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">On a long, thin gasket, we saw over 3.5% shrinkage along flow, but only about 2% across it. If we had used a single value, the part would never meet tolerance.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1d19c873 e-flex e-con-boxed e-con e-parent\" data-id=\"1d19c873\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-39d866c7 elementor-widget elementor-widget-text-editor\" data-id=\"39d866c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"flash-control-it-starts-with-the-parting-line\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Flash Control: It Starts with the Parting Line<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Flash is not just a process issue. It\u2019s mostly a mold issue.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">LSR will find any gap.<\/p><h3 id=\"three-levels-of-control\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Three levels of control<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Design level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Reduce inserts where possible<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Plan flash tear lines early<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Use mushroom or tapered ejector pins<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Machining level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Parting surfaces must be matched at micron level<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Ejector clearances must stay tight<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Process level:<\/p><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Use staged clamping with vacuum if possible<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">I\u2019ve seen shops increase clamp force to fix flash. It helps sometimes\u2014but if your parting line isn\u2019t tight, silicone will still leak through.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9c0db8a e-flex e-con-boxed e-con e-parent\" data-id=\"9c0db8a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-58168d56 elementor-widget elementor-widget-text-editor\" data-id=\"58168d56\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"temperature-control-uniformity-beats-high-heat\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Temperature Control: Uniformity Beats High Heat<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">You don\u2019t need the highest temperature. You need stable temperature.<\/p><h3 id=\"typical-ranges\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Typical ranges<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Standard LSR: 120\u2013150\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Fast cycles: 160\u2013170\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Avoid going above 180\u00b0C<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">The bigger problem is uneven heat.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">One mold we reviewed had a 10\u00b0C difference across cavities. Some parts cured fine, others stayed soft. The root cause was poor heater placement and shared sensors.<\/p><h3 id=\"key-points\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Key points<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Keep temperature variation within \u00b13\u00b0C<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Place heaters evenly and close to the cavity<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Avoid putting heaters too near the parting line<\/p><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9d3ed8d e-flex e-con-boxed e-con e-parent\" data-id=\"9d3ed8d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-61c15c79 e-con-full e-flex e-con e-child\" data-id=\"61c15c79\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-452d49c9 elementor-widget elementor-widget-text-editor\" data-id=\"452d49c9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"mold-material-and-demolding-often-overlooked\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">Mold Material and Demolding: Often Overlooked<\/h2><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Material choice matters more when you run high temperature cycles every day.<\/p><h3 id=\"typical-selections\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Typical selections<\/h3><ul class=\"marker:text-quiet list-disc pl-8\"><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Standard LSR: hardened tool steel<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">High wear or filled LSR: coated or powder metallurgy steel<\/p><\/li><li class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [&amp;&gt;p]:pt-0 [&amp;&gt;p]:mb-2 [&amp;&gt;p]:my-0\"><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Optical parts: polished steel<\/p><\/li><\/ul><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">For demolding, surface treatment helps a lot.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">PTFE or nickel coatings reduce sticking. Combine that with a 0.5\u20131\u00b0 draft angle, and most parts release cleanly.<\/p><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Relying on release agents long term usually creates more problems than it solves.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-10f6f003 e-flex e-con-boxed e-con e-parent\" data-id=\"10f6f003\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3fe70023 e-con-full e-flex e-con e-child\" data-id=\"3fe70023\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4eb0a elementor-widget elementor-widget-text-editor\" data-id=\"e4eb0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"faq-lsr-molding-design\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-lg first:mt-0 md:text-lg [hr+&amp;]:mt-4\">FAQ: LSR Molding Design<\/h2><h3 id=\"what-is-the-ideal-vent-depth-for-lsr-molding\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">What is the ideal vent depth for LSR molding?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Around 0.004\u20130.005 mm. Going above 0.02 mm will almost always cause flash.<\/p><h3 id=\"why-is-cold-runner-design-critical-in-lsr\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Why is cold runner design critical in LSR?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Because LSR starts curing above about 30\u00b0C. Poor cooling leads to blockages and scrap.<\/p><h3 id=\"how-much-does-lsr-shrink\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">How much does LSR shrink?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Typically 2% to 4%, but it varies by flow direction, thickness, and curing conditions.<\/p><h3 id=\"how-do-you-reduce-flash-in-lsr-parts\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">How do you reduce flash in LSR parts?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Focus on parting line precision, minimize gaps, and control mold alignment before adjusting process settings.<\/p><h3 id=\"is-vacuum-necessary-in-lsr-molding\" class=\"font-editorial font-bold mb-2 mt-4 [.has-inline-images_&amp;]:clear-end text-base first:mt-0\">Is vacuum necessary in LSR molding?<\/h3><p class=\"my-2 [&amp;+p]:mt-4 [&amp;_strong:has(+br)]:inline-block [&amp;_strong:has(+br)]:align-top\">Not always, but for complex or thin parts, it greatly improves venting and reduces defects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5c15b3f0 e-flex e-con-boxed e-con e-parent\" data-id=\"5c15b3f0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-40fc4bc3 elementor-widget elementor-widget-text-editor\" data-id=\"40fc4bc3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 data-start=\"8363\" data-end=\"8416\"><a href=\"https:\/\/xflsrmolding.com\/markets\/\">Contact US<\/a> to Discuss Your Project Today<\/h2><p class=\"isSelectedEnd\">Successful <a href=\"https:\/\/xflsrmolding.com\/markets\/\"><strong>LSR molding<\/strong><\/a> starts long before the first production run.<\/p><p class=\"isSelectedEnd\">Cold runner performance, vent design, shrinkage compensation, flash prevention, temperature control, and material selection all work together. Weakness in one area often creates problems elsewhere.<\/p><p>When mold design addresses these factors from the beginning, production becomes more predictable, scrap rates fall, and dimensional consistency improves over the life of the tool.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Blog Home Blog Liquid Silicone Rubber Molding vs HTV Silicone LSR Molding: What Actually Matters in Mold Design Table of Contents If you work with LSR molding, you already know this: the mold decides everything. Material, machine, and settings help\u2014but if the mold design is off, nothing else saves the part. I\u2019ve seen molds that [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1347,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-1345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>LSR Molding Guide: Design Tips and Common Mistakes<\/title>\n<meta name=\"description\" content=\"Learn practical LSR molding design tips, including cold runner, venting, shrinkage, and flash control, with real shop-floor insights.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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Home Blog Liquid Silicone Rubber Molding vs HTV Silicone LSR Molding: What Actually Matters in Mold Design Table of Contents If you work with LSR molding, you already know this: the mold decides everything. 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