{"id":5214,"date":"2024-07-25T09:08:12","date_gmt":"2024-07-25T07:08:12","guid":{"rendered":"https:\/\/web.castfast.com\/2024\/07\/25\/designing-sand-molds-for-the-3d-printer-nothing-goes-wrong-with-these-castfast-rules\/"},"modified":"2025-06-04T13:26:54","modified_gmt":"2025-06-04T11:26:54","slug":"designing-sand-molds-for-the-3d-printer-nothing-goes-wrong-with-these-castfast-rules","status":"publish","type":"post","link":"https:\/\/www.castfast.com\/en\/2024\/07\/25\/designing-sand-molds-for-the-3d-printer-nothing-goes-wrong-with-these-castfast-rules\/","title":{"rendered":"Designing sand molds for the 3D printer? Nothing goes wrong with these CASTFAST rules"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5214\" class=\"elementor elementor-5214 elementor-3817\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f70b90f e-con-full e-flex e-con e-parent\" data-id=\"7f70b90f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4bc973b elementor-widget__width-inherit elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"4bc973b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"1707\" src=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-scaled.avif\" class=\"attachment-full size-full wp-image-5036 not-transparent\" alt=\"\" srcset=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-scaled.avif 2560w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-300x200.avif 300w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-1024x683.avif 1024w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-768x512.avif 768w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-1536x1024.avif 1536w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/CX36742-2048x1365.avif 2048w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" data-has-transparency=\"false\" data-dominant-color=\"717f7f\" style=\"--dominant-color: #717f7f\" \/>\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<\/div>\n\t\t<div class=\"elementor-element elementor-element-44d496e3 e-con-full e-flex e-con e-child\" data-id=\"44d496e3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-19186cd5 e-con-full e-flex e-con e-child\" data-id=\"19186cd5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48ba539d elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"48ba539d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Designing sand molds for the 3D printer? Nothing goes wrong with these CASTFAST rules<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16197358 elementor-align-center elementor-widget elementor-widget-post-info\" data-id=\"16197358\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-7f530f1 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.castfast.com\/en\/2024\/07\/25\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>July 25, 2024<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-6863c75 elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/www.castfast.com\/en\/author\/marcel\/\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tMarcel Tschillaev\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-3994668 elementor-inline-item\" itemprop=\"about\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"32\" height=\"32\" viewBox=\"0 0 32 32\" fill=\"none\"><g clip-path=\"url(#clip0_2583_9867)\"><path d=\"M29.4189 1.30371H18.5566C18.1515 1.3037 17.7503 1.38348 17.3761 1.5385C17.0018 1.69352 16.6617 1.92074 16.3752 2.2072L1.75713 16.8253C1.6137 16.9685 1.49991 17.1387 1.42228 17.3259C1.34465 17.5132 1.30469 17.7139 1.30469 17.9166C1.30469 18.1193 1.34465 18.3201 1.42228 18.5073C1.49991 18.6946 1.6137 18.8647 1.75713 19.008L12.9926 30.2434C13.1358 30.3868 13.3059 30.5006 13.4932 30.5783C13.6805 30.6559 13.8812 30.6959 14.0839 30.6959C14.2866 30.6959 14.4874 30.6559 14.6746 30.5783C14.8619 30.5006 15.032 30.3868 15.1753 30.2434L29.7933 15.6253C30.0799 15.3389 30.3072 14.9989 30.4622 14.6246C30.6173 14.2503 30.697 13.8491 30.6968 13.4439V2.58163C30.6968 2.2427 30.5622 1.91766 30.3225 1.678C30.0829 1.43835 29.7578 1.30371 29.4189 1.30371ZM24.9462 8.97121C24.5671 8.97121 24.1965 8.85879 23.8812 8.64816C23.566 8.43753 23.3203 8.13816 23.1752 7.78789C23.0302 7.43763 22.9922 7.05221 23.0662 6.68037C23.1401 6.30853 23.3227 5.96698 23.5908 5.6989C23.8588 5.43082 24.2004 5.24826 24.5722 5.17429C24.9441 5.10033 25.3295 5.13829 25.6798 5.28337C26.03 5.42846 26.3294 5.67415 26.54 5.98938C26.7507 6.30461 26.8631 6.67521 26.8631 7.05434C26.8631 7.30606 26.8135 7.55533 26.7172 7.78789C26.6208 8.02046 26.4796 8.23177 26.3016 8.40977C26.1236 8.58777 25.9123 8.72897 25.6798 8.8253C25.4472 8.92163 25.1979 8.97121 24.9462 8.97121Z\" fill=\"#F9FAFB\"><\/path><path d=\"M29.4189 1.30371H18.5566C18.1515 1.3037 17.7503 1.38348 17.3761 1.5385C17.0018 1.69352 16.6617 1.92074 16.3752 2.2072L1.75713 16.8253C1.6137 16.9685 1.49991 17.1387 1.42228 17.3259C1.34465 17.5132 1.30469 17.7139 1.30469 17.9166C1.30469 18.1193 1.34465 18.3201 1.42228 18.5073C1.49991 18.6946 1.6137 18.8647 1.75713 19.008L7.43874 24.6896L23.6683 8.47155C23.4713 8.29928 23.3118 8.08839 23.1997 7.85195C23.0876 7.61551 23.0253 7.35856 23.0166 7.09704C23.0079 6.83551 23.053 6.57499 23.1491 6.33161C23.2452 6.08824 23.3903 5.86721 23.5754 5.68223C23.7605 5.49724 23.9816 5.35225 24.225 5.25623C24.4684 5.16022 24.729 5.11524 24.9905 5.12407C25.252 5.1329 25.5089 5.19536 25.7453 5.30757C25.9817 5.41979 26.1925 5.57937 26.3647 5.77642L30.3786 1.75993C30.2614 1.61877 30.1148 1.50484 29.949 1.42606C29.7833 1.34727 29.6024 1.30552 29.4189 1.30371Z\" fill=\"#A0ABC0\"><\/path><path d=\"M29.4189 1.30371H18.5566C18.1515 1.3037 17.7503 1.38348 17.3761 1.5385C17.0018 1.69352 16.6617 1.92074 16.3752 2.2072L1.75713 16.8253C1.6137 16.9685 1.49991 17.1387 1.42228 17.3259C1.34465 17.5132 1.30469 17.7139 1.30469 17.9166C1.30469 18.1193 1.34465 18.3201 1.42228 18.5073C1.49991 18.6946 1.6137 18.8647 1.75713 19.008L12.9926 30.2434C13.1358 30.3868 13.3059 30.5006 13.4932 30.5783C13.6805 30.6559 13.8812 30.6959 14.0839 30.6959C14.2866 30.6959 14.4874 30.6559 14.6746 30.5783C14.8619 30.5006 15.032 30.3868 15.1753 30.2434L29.7933 15.6253C30.0799 15.3389 30.3072 14.9989 30.4622 14.6246C30.6173 14.2503 30.697 13.8491 30.6968 13.4439V2.58163C30.6968 2.2427 30.5622 1.91766 30.3225 1.678C30.0829 1.43835 29.7578 1.30371 29.4189 1.30371ZM24.9462 8.97121C24.5671 8.97121 24.1965 8.85879 23.8812 8.64816C23.566 8.43753 23.3203 8.13816 23.1752 7.78789C23.0302 7.43763 22.9922 7.05221 23.0662 6.68037C23.1401 6.30853 23.3227 5.96698 23.5908 5.6989C23.8588 5.43082 24.2004 5.24826 24.5722 5.17429C24.9441 5.10033 25.3295 5.13829 25.6798 5.28337C26.03 5.42846 26.3294 5.67415 26.54 5.98938C26.7507 6.30461 26.8631 6.67521 26.8631 7.05434C26.8631 7.30606 26.8135 7.55533 26.7172 7.78789C26.6208 8.02046 26.4796 8.23177 26.3016 8.40977C26.1236 8.58777 25.9123 8.72897 25.6798 8.8253C25.4472 8.92163 25.1979 8.97121 24.9462 8.97121Z\" stroke=\"#222222\" stroke-width=\"1.33\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><\/path><\/g><defs><clipPath id=\"clip0_2583_9867\"><rect width=\"32\" height=\"32\" fill=\"white\"><\/rect><\/clipPath><\/defs><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-terms\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-post-info__terms-list\">\n\t\t\t\t<a href=\"https:\/\/www.castfast.com\/en\/category\/knowledge\/\" class=\"elementor-post-info__terms-list-item\">Knowledge<\/a>\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-74329d82 e-flex e-con-boxed e-con e-parent\" data-id=\"74329d82\" 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-5a0fa24 elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"5a0fa24\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\tGuidelines and tips from the CASTFAST team to help foundries successfully design sand molds for 3D sand printing.\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-3f274035 e-flex e-con-boxed e-con e-parent\" data-id=\"3f274035\" 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-7647255c elementor-drop-cap-yes elementor-drop-cap-view-default elementor-widget elementor-widget-text-editor\" data-id=\"7647255c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;drop_cap&quot;:&quot;yes&quot;}\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nowhere do foundry know-how and new design thinking meet more acutely than when designing the sand mold for the 3D printer. Here at CASTFAST, we work closely with our casting foundries to ensure that the mold is perfect the first time &#8211; no matter where it is printed &#8211; and that the casting runs exactly as the casters imagined.   <\/p><p>On the one hand, the mold should behave and be able to be handled in exactly the same way as if it had been produced by hand, but on the other hand, differences in the details of mold production must be taken into account for printing and transport.<\/p><p>To this end, we provide foundries with guidelines and rules &#8211; both general and casting-specific. Here we briefly show what foundries can expect. In newspaper printing, this means pre-press &#8211; everything that has to happen before the actual printing. This is what the pre-press stage at CASTFAST looks like:   <\/p><p> <\/p><h2>From the component drawing to the sand mold design<\/h2><p>The CASTFAST team provides the 3D model of the casting for the design of the sand mold, as well as a document with general key data on the mold &#8211; such as maximum size, tolerances, labeling, attachment of transport holes &#8211; and design tips. The foundry then adds the casting technology to the 3D model of the casting as a positive model: Gating system, filters, risers, cooling irons and core marks are also applied by the foundry. <\/p><p>For dimensions for filters, feeders and heat sinks, we provide a<i> <\/i>tolerance of 1 mm to be added. Bevels of the casting are included in the 3D data and, thanks to the <strong><a href=\"https:\/\/www.castfast.com\/en\/2023\/04\/25\/faster-to-a-cast-part-without-a-model-what-is-3d-sand-printing\/\">3D sand printing process<\/a><\/strong> have no influence on the sand mold design. <\/p><p><img decoding=\"async\" class=\"aligncenter wp-image-3822 size-full\" src=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide1-jpeg.avif\" alt=\"\" width=\"720\" height=\"405\">The 3D drawing also already contains the machining allowances (we mark these in blue). We provide foundries with the maximum dimensions and the minimum wall thickness of the mold in our design guidelines. This results in the \u201csand cuboid\u201d, from which the 3D model of the raw part is subtracted together with the casting technique to obtain the 3D drawing of the final mold. Almost like a traditional pattern. Only virtual.    <\/p><p><img data-dominant-color=\"e1847f\" data-has-transparency=\"false\" style=\"--dominant-color: #e1847f;\" decoding=\"async\" class=\"aligncenter wp-image-3823 size-full not-transparent\" src=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide2-jpeg.avif\" alt=\"\" width=\"720\" height=\"405\"><\/p><p>For the positive 3D model, the casting should sit directly on the gate; cooling irons are also placed directly on the casting. Positive placeholders for the risers, on the other hand, should be placed flush on the casting. <\/p><p>When designing the \u201cvirtual\u201d feeder, it is important to note that a slightly larger placeholder of the feeder is used for the sand mold construction so that the real feeder can be easily inserted by hand later. The placeholder only has the actual dimensions of the riser in the lower area so that it fits snugly here. This can be easily achieved by taking the 3D file of the riser and extending the upper half upwards.  <\/p><p> <\/p><h2>Logistics, labeling, file formats<\/h2><p>We require the print file in .step format in accordance with ISO 214. All objects (casting technology, cores, molded parts) must be provided in one file. To ensure a high degree of automation in order processing, we also request standardized file names (more on this in our order documents).<\/p><p>As a rule, transportation and guide holes should have a diameter of 31 mm in compliance with the specified minimum wall thickness. The 31 mm is an empirical value &#8211; many of our customer and supplier foundries use rods with a diameter of 24-30 mm, which is why 31 mm always fits. Foundries can adapt this to their own requirements.  <\/p><p>Finally, all form segments must be labeled with text according to the scheme provided in the order documents.<\/p><p><img data-dominant-color=\"bd887e\" data-has-transparency=\"false\" style=\"--dominant-color: #bd887e;\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3829 not-transparent\" src=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide3-1-jpg.avif\" alt=\"\" width=\"1068\" height=\"652\" srcset=\"https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide3-1-jpg.avif 1068w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide3-1-300x183.avif 300w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide3-1-1024x625.avif 1024w, https:\/\/www.castfast.com\/wp-content\/uploads\/2024\/07\/Slide3-1-768x469.avif 768w\" sizes=\"(max-width: 1068px) 100vw, 1068px\" \/><\/p><p>And this is the CASTFAST-style pre-press stage. This means that the file can go directly to the printer (don&#8217;t worry, we check it beforehand), the sand mold can be printed and delivered to the foundry for casting. And if the casters can only get the casting technique on paper from the 2D drawing, we are also happy to create the print file.  <\/p><p><strong>Fancy faster or more complex sand molds? Simply order <a href=\"https:\/\/www.castfast.com\/en\/calculator\/\">here<\/a>. We print, casters cast.  <\/strong><\/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-7e985fa5 e-flex e-con-boxed e-con e-parent\" data-id=\"7e985fa5\" 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-76f9fab7 elementor-widget elementor-widget-post-navigation\" data-id=\"76f9fab7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-navigation.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-post-navigation\" role=\"navigation\" aria-label=\"Post Navigation\">\n\t\t\t<div class=\"elementor-post-navigation__prev elementor-post-navigation__link\">\n\t\t\t\t<a href=\"https:\/\/www.castfast.com\/en\/2024\/07\/18\/the-first-of-many-castfast-supplies-castings-plus-machining\/\" rel=\"prev\"><span 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printing.<\/p>\n","protected":false},"author":8,"featured_media":5036,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[49],"tags":[53],"class_list":["post-5214","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-3d-sand-printing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Designing sand molds for 3D sand printing | CASTFAST<\/title>\n<meta name=\"description\" content=\"Sand mold design for the 3D printer? 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