{"id":30774,"date":"2026-03-13T16:08:30","date_gmt":"2026-03-13T14:08:30","guid":{"rendered":"https:\/\/reusable-molds.com\/kunsthars-mallen-hub-pagina\/hars-vast-in-mal-hoe-epoxyhars-veilig-te-verwijderen\/"},"modified":"2026-03-13T16:09:59","modified_gmt":"2026-03-13T14:09:59","slug":"hars-vast-in-mal-hoe-epoxyhars-veilig-te-verwijderen","status":"publish","type":"page","link":"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/hars-vast-in-mal-hoe-epoxyhars-veilig-te-verwijderen\/","title":{"rendered":"Hars vast in mal - Hoe epoxyhars veilig te verwijderen"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"30774\" class=\"elementor elementor-30774 elementor-30484\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a9df915 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a9df915\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c2c17e6\" data-id=\"c2c17e6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6c5b616 elementor-widget elementor-widget-heading\" data-id=\"6c5b616\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Hars vast in mal - Hoe epoxyhars veilig te verwijderen<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-b21520a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"b21520a\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8123964\" data-id=\"8123964\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4062293 elementor-widget elementor-widget-text-editor\" data-id=\"4062293\" data-element_type=\"widget\" data-e-type=\"widget\" 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>Een van de meest voorkomende problemen die harskunstenaars tegenkomen is hars die vast komt te zitten in een mal. Als epoxyhars niet goed loslaat, kan het het eindproduct of de mal zelf beschadigen. <\/p><p>Problemen met ontvormen treden vaak op als de hars niet volledig is uitgehard, als het matrijsoppervlak beschadigd is of als het matrijsmateriaal niet compatibel is met de gebruikte hars.<\/p><p>Als je begrijpt hoe hars zich gedraagt tijdens het uitharden en hoe mallen uitgeharde hars afgeven, kun je de meeste problemen met ontmallen voorkomen.<\/p><p>Voor een volledig overzicht van malsystemen die worden gebruikt in kunsthars, zie <a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/\"><strong>Resin Art Molds - Complete Gids voor Kunstharskunstenaars<\/strong>.<\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0a6f828 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0a6f828\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fbc67a2\" data-id=\"fbc67a2\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e98c11d elementor-widget elementor-widget-text-editor\" data-id=\"e98c11d\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Waarom hars vast komt te zitten in mallen<\/strong><\/h2><p>Verschillende factoren kunnen ervoor zorgen dat hars in een mal blijft plakken.<\/p><p><strong>Onvolledige uitharding<\/strong><\/p><p>Als epoxyhars niet volledig is uitgehard, kan het enigszins flexibel of kleverig blijven. Als je het gietstuk te vroeg probeert te verwijderen, kan de hars zich aan het oppervlak van de mal hechten. <\/p><p><strong>Schimmel oppervlakteschade<\/strong><\/p><p>Krassen, resten of stof in de vormholte kunnen voorkomen dat hars goed vrijkomt.<\/p><p><strong>Vormmateriaal<\/strong><\/p><p>Sommige mallen van lage kwaliteit zijn gemaakt van plastic materialen die de neiging hebben om aan hars te blijven plakken. Siliconen mallen hebben over het algemeen de voorkeur omdat ze gemakkelijk uitgeharde hars afgeven. <\/p><p>Een gedetailleerde vergelijking van matrijsmaterialen wordt uitgelegd in <a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/de-juiste-gietvorm-voor-hars-kiezen\/\"><strong>Mallen van siliconenhars vs. HDPE vormsystemen<\/strong>.<\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cf79750 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cf79750\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2e0d9e5\" data-id=\"2e0d9e5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e10684d elementor-widget elementor-widget-text-editor\" data-id=\"e10684d\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Veilige ontvormingstechnieken<\/strong><\/h2><p>Het verwijderen van hars uit een mal moet altijd voorzichtig gebeuren om beschadiging van het eindproduct te voorkomen.<\/p><p>Met flexibele siliconenmallen kunnen de malwanden voorzichtig van het gietstuk weg worden gebogen. In plaats van direct aan het stuk hars te trekken, moet de mal langzaam gebogen worden om de afdichting tussen de hars en het oppervlak van de mal te verbreken. <\/p><p>Grotere mallen zoals <a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/mallen-voor-onderzetters-van-hars-vormen-maten-en-technieken\/\"><strong>Mallen voor onderzetters - Vormen, maten en technieken<\/strong><\/a> moeten geleidelijk aan meerdere kanten worden gebogen om de hars gelijkmatig te laten vrijkomen.<\/p><p> <\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4cfe9fc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4cfe9fc\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-58f40ae\" data-id=\"58f40ae\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c9f1d71 elementor-widget elementor-widget-text-editor\" data-id=\"c9f1d71\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Problemen met ontvormen voorkomen<\/strong><\/h2><p>De meeste problemen met ontvormen kunnen vermeden worden door een goede voorbereiding en matrijskeuze.<\/p><p><strong>Volledige uithardingstijd toestaan<\/strong><\/p><p>Laat epoxyhars altijd volledig uitharden voordat je probeert het gips te verwijderen. Veel harsen hebben 24-48 uur nodig om volledig uit te harden. <\/p><p><strong>Houd schimmels schoon<\/strong><\/p><p>Stof, harsresten of vingerafdrukken in de matrijsholte kunnen de lossingsprestaties be\u00efnvloeden.<\/p><p><strong>Gebruik hoogwaardige mallen<\/strong><\/p><p>Hoogwaardige siliconenmallen geven beter vrij en behouden hun oppervlakteafwerking na vele gietbeurten.<\/p><p>Kunstenaars die decoratieve voorwerpen zoals dienbladen maken, moeten de <a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/harsen-tray-mallen-een-complete-gids-voor-kunstenaars\/\"><strong>Resin Tray Molds - A Complete Guide for Artists<\/strong><\/a> bekijken .<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-96894f8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"96894f8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-32f7841\" data-id=\"32f7841\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a099252 elementor-widget elementor-widget-text-editor\" data-id=\"a099252\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Ontvormen van grote stukken hars<\/strong><\/h2><p>Grote stukken hars vereisen extra zorg tijdens het ontvormen. Flexibele mallen kunnen licht vervormen onder het gewicht van dikke gietmassa&#8217;s hars. <\/p><p>Voor grotere harsprojecten gebruiken sommige kunstenaars starre malsystemen die hun vorm behouden tijdens het uitharden.<\/p><p>Ontdek <a href=\"https:\/\/reusable-molds.com\/nl\/hdpe-epoxyhars-mallen\/\"><strong>professionele epoxyhars tafelmallen voor grote harsprojecten<\/strong>.<\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d391805 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d391805\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9abe66e\" data-id=\"9abe66e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-8873ac8 elementor-widget elementor-widget-text-editor\" data-id=\"8873ac8\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Mallen kiezen die gemakkelijk hars afgeven<\/strong><\/h2><p>Het juiste matrijsmateriaal kiezen is een van de meest effectieve manieren om problemen met ontvormen te voorkomen.<\/p><p>Siliconenmallen worden veel gebruikt omdat ze ervoor zorgen dat uitgeharde hars gemakkelijk loslaat zonder dat er spuitbussen voor nodig zijn.<\/p><p>Het ontwerp van de mal en de compatibiliteit van de hars wordt uitgelegd in <a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/de-juiste-gietvorm-voor-hars-kiezen\/\"><strong>Hoe kies je de juiste harsmal voor je kunstproject<\/strong>?<\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8d99499 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8d99499\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c19ddcf\" data-id=\"c19ddcf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c6b75e6 elementor-widget elementor-widget-text-editor\" data-id=\"c6b75e6\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>Gerelateerde gidsen voor harskunstenaars<\/strong><\/h2><p>Zie de volgende gidsen voor meer informatie over giettechnieken en mallen van hars:<\/p><p><a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/\"><strong>Kunsthars mallen - Complete gids voor kunsthars kunstenaars<\/strong><\/a><\/p><p><a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/doe-het-zelf-harsmallen\/\"><strong>Doe-het-zelf harsvormen - Zo maak je thuis harsvormen<\/strong><\/a><\/p><p><a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/mallen-voor-sieraden-van-hars-complete-gids-voor-sieradenkunstenaars\/\"><strong>Mallen voor sieraden van hars - Een gids voor sieradenkunstenaars<\/strong><\/a><\/p><p><a href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/mallen-voor-onderzetters-van-hars-vormen-maten-en-technieken\/\"><strong>Mallen voor onderzetters van hars - Vormen, maten en technieken<\/strong><\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8e4fa44 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8e4fa44\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0195a05\" data-id=\"0195a05\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-e68d307 elementor-widget elementor-widget-text-editor\" data-id=\"e68d307\" data-element_type=\"widget\" data-e-type=\"widget\" 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<h2><strong>FAQ - Hars vast in mal<\/strong><\/h2><p><strong>Waarom zit mijn hars vast in de mal?<\/strong><\/p><p>Hars plakt vaak als het niet volledig is uitgehard of als het oppervlak van de mal beschadigd of vervuild is.<\/p><p><strong>Kun je hars repareren dat vastzit in een mal?<\/strong><\/p><p>Soms kan de mal voorzichtig gebogen worden om de hars los te maken. In ernstige gevallen kan het nodig zijn de mal door te snijden om het stuk te verwijderen. <\/p><p><strong>Heb je mold release nodig voor gietharsmallen?<\/strong><\/p><p>Hoogwaardige siliconenmallen geven meestal hars af zonder dat er mold release sprays nodig zijn.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Hars vast in mal - Hoe epoxyhars veilig te verwijderen Een van de meest voorkomende problemen die harskunstenaars tegenkomen is hars die vast komt te zitten in een mal. Als epoxyhars niet goed loslaat, kan het het eindproduct of de mal zelf beschadigen. Problemen met ontvormen treden vaak op als de hars niet volledig is [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":23925,"parent":30734,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"full-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Hars vast in mal - Hoe epoxyhars veilig te verwijderen | Reusable-Molds<\/title>\n<meta name=\"description\" content=\"Leer hoe je hars verwijdert die vastzit in mallen en voorkom ontmallingsproblemen bij het werken met epoxyhars en siliconenmallen.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reusable-molds.com\/nl\/kunsthars-mallen-hub-pagina\/hars-vast-in-mal-hoe-epoxyhars-veilig-te-verwijderen\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Hars vast in mal - Hoe epoxyhars veilig te verwijderen\" \/>\n<meta property=\"og:description\" content=\"Leer hoe je hars verwijdert die vastzit in mallen en voorkom ontmallingsproblemen bij het 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