{"id":944,"date":"2024-02-23T11:46:20","date_gmt":"2024-02-23T10:46:20","guid":{"rendered":"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/?p=944"},"modified":"2024-10-30T15:05:32","modified_gmt":"2024-10-30T14:05:32","slug":"limpression-resine-au-semlab","status":"publish","type":"post","link":"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/2024\/02\/23\/limpression-resine-au-semlab\/","title":{"rendered":"L&rsquo;impression r\u00e9sine au SEMLab"},"content":{"rendered":"<p>Une nouvelle imprimante a rejoint le parc du SEM Lab. Contrairement \u00e0 nos autres imprimantes (\u00e0 d\u00e9p\u00f4t de filament &#8211; FDM), il s&rsquo;agit cette fois d&rsquo;une imprimante \u00ab\u00a0r\u00e9sine\u00a0\u00bb (technologie mSLA) qui a son lot d&rsquo;avantages mais \u00e9galement d&rsquo;inconv\u00e9nients. En raison de ceux-ci, cette imprimante n&rsquo;est pas directement accessible aux enseignants, mais elle sera int\u00e9gr\u00e9e au service d&rsquo;impression propos\u00e9 par le SEM.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-947 size-large\" src=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-653x1024.jpg\" alt=\"\" width=\"653\" height=\"1024\" srcset=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-653x1024.jpg 653w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-191x300.jpg 191w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-768x1205.jpg 768w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-979x1536.jpg 979w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-172x270.jpg 172w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3.jpg 1000w\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" \/><\/p>\n<h3><\/h3>\n<h3>L&rsquo;impression r\u00e9sine mSLA<\/h3>\n<p>Ce processus d\u2019impression 3D conduit \u00e0 la solidification d&rsquo;une r\u00e9sine \u00e9poxy liquide par des rayons ultra-violets (UV). La solidification se fait par r\u00e9action chimique de polym\u00e9risation (les mol\u00e9cules sont li\u00e9es les unes au autres de fa\u00e7on d\u00e9finitive), par un catalyseur chimique qui est activ\u00e9 par les rayons UV (comme ceux du soleil). La r\u00e9sine passe donc d\u00e9finitivement d&rsquo;un \u00e9tat liquide \u00e0 un \u00e9tat solide.<\/p>\n<p>Pour diriger les rayons UV au bon endroit, cette technologie utilise une source de rayons UV et, un \u00e9cran \u00e0 cristaux liquides (LCD) pour masquer les endroits qui ne doivent pas \u00eatre solidifi\u00e9s. Le principe est similaire \u00e0 l&rsquo;affichage d&rsquo;un smartphone (les premi\u00e8res imprimantes mSLA grand public utilisaient d&rsquo;ailleurs de tels \u00e9crans).<\/p>\n<p>Cette technologie n&rsquo;est pas nouvelle, mais la gamme \u00ab\u00a0grand public\u00a0\u00bb est de plus en plus abordable et qualitative. On peut dire qu&rsquo;elle a atteint sa maturit\u00e9.<\/p>\n<p>Il existe de nombreuses r\u00e9sines diff\u00e9rentes avec diverses propri\u00e9t\u00e9s (rigide, \u00e9lastique, transparente, opaque, etc.). Le choix au SEM Lab est actuellement tr\u00e8s restreint.<\/p>\n<p>&nbsp;<\/p>\n<h3>Quels sont les avantages de ce type d&rsquo;impression par rapport \u00e0 l&rsquo;impression de filament (FDM) ?<\/h3>\n<p>Il y a deux avantages principaux, le premier est la r\u00e9solution (qualit\u00e9 d&rsquo;impression) et le second est le temps d&rsquo;impression.<\/p>\n<p>L&rsquo;imprimante du SEM Lab est une <em>Elegoo Saturn 3<\/em> capable d&rsquo;imprimer des d\u00e9tails de l&rsquo;ordre de 25 microns (l&rsquo;\u00e9paisseur d&rsquo;un cheveux varie entre 30 et 120 microns), soit plus de 15 fois plus pr\u00e9cis que les imprimantes FDM du SEM Lab (entre 400 et 800 microns). De plus, les stries d&rsquo;impression, caract\u00e9ristiques de l&rsquo;impression FDM, sont absentes de l&rsquo;impression mSLA. La qualit\u00e9 de la pi\u00e8ce imprim\u00e9e est donc bien sup\u00e9rieure \u00e0 l&rsquo;impression FDM.<\/p>\n<p>Le second avantage est le temps d&rsquo;impression. La dur\u00e9e d&rsquo;impression d&rsquo;une couche avoisine les 10 secondes et ce quelque soit la quantit\u00e9 ou la taille des objets \u00e0 imprimer. Il faut \u00e9videmment relativiser cet avantage car pour conserver une qualit\u00e9 \u00e9lev\u00e9e, on imprime g\u00e9n\u00e9ralement plus de couches qu&rsquo;avec la technologie FDM. De plus, le traitement post-impression obligatoire (voir ci-dessous) prend \u00e9galement plus de temps.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-951 size-large\" src=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue-715x1024.jpg\" alt=\"\" width=\"715\" height=\"1024\" srcset=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue-715x1024.jpg 715w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue-209x300.jpg 209w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue-768x1100.jpg 768w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue-188x270.jpg 188w, https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Statue.jpg 800w\" sizes=\"auto, (max-width: 715px) 100vw, 715px\" \/><\/p>\n<h3>Et les d\u00e9savantages ?<\/h3>\n<p>Il y a plusieurs d\u00e9savantages \u00e0 ce type d&rsquo;impression, raisons pour laquelle cette technologie a tard\u00e9 \u00e0 rejoindre notre parc d&rsquo;imprimantes et que son usage demeure restreint.<\/p>\n<p>Premi\u00e8rement, la toxicit\u00e9 de la r\u00e9sine non-polym\u00e9ris\u00e9e est tr\u00e8s importante (mais une fois polym\u00e9ris\u00e9e, la r\u00e9sine est sans danger) et n\u00e9cessite des mesures de protection et de gestion des d\u00e9chets plus strictes. Ces mesures sont incompatibles avec une mise \u00e0 disposition de la machine \u00e0 un large public.<\/p>\n<p>Deuxi\u00e8mement, la pr\u00e9paration de l&rsquo;impression est plus longue et plus technique, n\u00e9cessitant des connaissances plus compl\u00e8tes des causes d&rsquo;\u00e9chec d&rsquo;impression. Le calibrage de la machine est \u00e9galement plus long, en tout cas pour b\u00e9n\u00e9ficier de son principal avantage (sa haute r\u00e9solution).<\/p>\n<p>Troisi\u00e8mement, une fois l&rsquo;impression achev\u00e9e, la pi\u00e8ce imprim\u00e9e doit encore \u00eatre trait\u00e9e pour \u00e9liminer la r\u00e9sine non-polym\u00e9ris\u00e9e, supprimer les nombreux supports d&rsquo;impression, et stabiliser la r\u00e9sine durcie. Bref, des \u00e9tapes de post-impression qui se r\u00e9v\u00e8lent plus complexes et plus longues que pour l&rsquo;impression FDM.<\/p>\n<p>Derni\u00e8rement, le volume d&rsquo;impression est plus faible que pour nos imprimantes FDM. S&rsquo;il existe des machines de tr\u00e8s grand volume, la <em>Saturn 3<\/em> du SEM Lab est une imprimante r\u00e9sine de taille moyenne, pouvant imprimer des pi\u00e8ces ne d\u00e9passant pas un volume de 21,8 x 12,2 x 25,0 cm\u00b3. Cela repr\u00e9sente environ la moiti\u00e9 du volume imprimable sur notre plus petite imprimante FDM.<\/p>\n<p>On pourrait \u00e9galement ajouter le co\u00fbt de l&rsquo;impression, car si le prix d&rsquo;achat des machines est comparable, le co\u00fbt d&rsquo;utilisation est en d\u00e9faveur de l&rsquo;impression r\u00e9sine.<\/p>\n<p>&nbsp;<\/p>\n<h3>Alors pour quelles utilisations, et pour qui ?<\/h3>\n<p>L&rsquo;usage de cette machine est au final assez restreint, autant que ses utilisateurs. Il s&rsquo;agit donc d&rsquo;exploiter son meilleur avantage, son extr\u00eame pr\u00e9cision, pour imprimer des pi\u00e8ces tr\u00e8s petites ou tr\u00e8s d\u00e9taill\u00e9es.<\/p>\n<p>Si vous souhaitez une impression r\u00e9sine, visitez la page de <a href=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/service-dimpression-3d\/\">l&rsquo;impression \u00e0 la demande<\/a> pour consulter les d\u00e9tails et les modalit\u00e9s.<\/p>\n<p>Aucune formation g\u00e9n\u00e9rique n&rsquo;est propos\u00e9e pour cette machine. Cependant, si vous avez des questions sur cette technologie ou si vous poss\u00e9dez d\u00e9j\u00e0 une telle imprimante et souhaitez une assistance \u00e0 son utilisation, le FabLab Manager (email en haut \u00e0 gauche) peut vous r\u00e9pondre.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une nouvelle imprimante a rejoint le parc du SEM Lab. Contrairement \u00e0 nos autres imprimantes (\u00e0 d\u00e9p\u00f4t de filament &#8211; FDM), il s&rsquo;agit cette fois d&rsquo;une imprimante \u00ab\u00a0r\u00e9sine\u00a0\u00bb (technologie mSLA) qui a son lot d&rsquo;avantages mais \u00e9galement d&rsquo;inconv\u00e9nients. En raison <a href=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/2024\/02\/23\/limpression-resine-au-semlab\/\" class=\"read-more\">Lire la suite&#8230;<\/a><\/p>\n","protected":false},"author":2953,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,2],"tags":[],"class_list":["post-944","post","type-post","status-publish","format-standard","hentry","category-imprimante-3d","category-machines"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>L&#039;impression r\u00e9sine au SEMLab - Fabrication num\u00e9rique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/2024\/02\/23\/limpression-resine-au-semlab\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;impression r\u00e9sine au SEMLab - Fabrication num\u00e9rique\" \/>\n<meta property=\"og:description\" content=\"Une nouvelle imprimante a rejoint le parc du SEM Lab. Contrairement \u00e0 nos autres imprimantes (\u00e0 d\u00e9p\u00f4t de filament &#8211; FDM), il s&rsquo;agit cette fois d&rsquo;une imprimante \u00ab\u00a0r\u00e9sine\u00a0\u00bb (technologie mSLA) qui a son lot d&rsquo;avantages mais \u00e9galement d&rsquo;inconv\u00e9nients. En raison Lire la suite...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/2024\/02\/23\/limpression-resine-au-semlab\/\" \/>\n<meta property=\"og:site_name\" content=\"Fabrication num\u00e9rique\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-23T10:46:20+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-30T14:05:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/edu.ge.ch\/site\/fabrication-numerique\/wp-content\/uploads\/sites\/247\/2024\/02\/Saturn3-653x1024.jpg\" \/>\n<meta name=\"author\" content=\"Bertrand Emery\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bertrand Emery\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/\"},\"author\":{\"name\":\"Bertrand Emery\",\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/#\\\/schema\\\/person\\\/a18f1d72f1102e65f235b2abacdb2b9c\"},\"headline\":\"L&rsquo;impression r\u00e9sine au SEMLab\",\"datePublished\":\"2024-02-23T10:46:20+00:00\",\"dateModified\":\"2024-10-30T14:05:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/\"},\"wordCount\":877,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/wp-content\\\/uploads\\\/sites\\\/247\\\/2024\\\/02\\\/Saturn3-653x1024.jpg\",\"articleSection\":[\"Imprimante 3D\",\"Machines\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/\",\"url\":\"https:\\\/\\\/edu.ge.ch\\\/site\\\/fabrication-numerique\\\/2024\\\/02\\\/23\\\/limpression-resine-au-semlab\\\/\",\"name\":\"L'impression r\u00e9sine au SEMLab - 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