{"product_id":"original-prusa-mk4s-to-core-one-gen-2-conversion-kit","title":"Original Prusa® MK4S to CORE One+ (Gen 2) Conversion Kit","description":"\u003cstyle\u003e\n  \/* STRICT 1:1 LAYOUT \u0026 THEME OVERRIDE *\/\n  .prusa-page { font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, Helvetica, Arial, sans-serif !important; color: #333 !important; max-width: 980px !important; margin: 0 auto !important; line-height: 1.6 !important; font-size: 16px !important; }\n  .prusa-page * { box-sizing: border-box !important; }\n  .prusa-page img { width: 100% !important; height: auto !important; display: block !important; border-radius: 8px !important; margin: 0 !important; }\n  .prusa-page a { color: #fa6831 !important; text-decoration: none !important; }\n  .prusa-page a:hover { text-decoration: underline !important; }\n  .prusa-page h2 { font-size: 1.75rem !important; font-weight: 700 !important; color: #111 !important; margin: 0 0 1rem !important; line-height: 1.2 !important; 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max-width: 100% !important; object-fit: contain !important; border-radius: 0 !important; width: auto !important; }\n  .prusa-avatar-scaling { width: 70px !important; height: 70px !important; display: flex !important; align-items: center !important; justify-content: center !important; margin: 0 auto 15px auto !important; }\n  .prusa-scaling-avatar { height: 100% !important; width: 100% !important; border-radius: 50% !important; object-fit: cover !important; }\n\n  \/* Forced Spacing for Card Headings *\/\n  .prusa-card h4, .prusa-card h3 { margin-top: 15px !important; margin-bottom: 8px !important; }\n  .prusa-secure-card { background: #fdfdfd !important; border: 1px solid #eee !important; border-radius: 8px !important; padding: 20px !important; border-top: 3px solid #fa6831 !important; height: 100% !important; }\n\u003c\/style\u003e\n\u003cdiv class=\"prusa-page\"\u003e\n\u003cdiv style=\"text-align: center; margin-bottom: 30px;\"\u003e\n\u003cdiv class=\"prusa-tag\"\u003eConversion Kit\u003c\/div\u003e\n\u003ch2\u003eMK4S → CORE One+ (Gen 2) Conversion Kit\u003c\/h2\u003e\n\u003ch3 style=\"color: #666 !important;\"\u003eTurn your MK4S into a fully enclosed CoreXY printer.\u003c\/h3\u003e\n\u003cp style=\"max-width: 820px; margin: 20px auto !important;\"\u003eEverything you need to rebuild an Original Prusa MK4S into a Prusa CORE One+ (Gen 2) — the enclosed, actively heated CoreXY machine, with no compromise against a factory-built unit. The result takes up less desk space, prints faster, handles a larger build volume, and runs demanding materials like PC, PCCF and Nylon without warping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff6f2; border: 1px solid #fa6831; border-left: 5px solid #fa6831; padding: 16px 20px; border-radius: 6px; margin-bottom: 40px;\"\u003e\n\u003cp style=\"margin: 0 !important; color: #111 !important;\"\u003e\u003cstrong\u003ePreorder — expected to ship Mid-September.\u003c\/strong\u003e Order now to hold your place in line. \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fffbe6; border: 1px solid #e0c200; border-left: 5px solid #e0c200; padding: 20px; border-radius: 6px; margin-bottom: 50px;\"\u003e\n\u003ch3 style=\"margin-bottom: 8px !important;\"\u003eBefore you order — two compatibility checks\u003c\/h3\u003e\n\u003cul class=\"prusa-list\" style=\"margin-bottom: 0 !important;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003exLCD version.\u003c\/strong\u003e This kit is supplied for the \u003cstrong\u003enewer xLCD\u003c\/strong\u003e revision. Check which xLCD your MK4S shipped with; if you have the older revision, contact us before ordering and we will include the additional components you need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply.\u003c\/strong\u003e The \u003cstrong\u003esilver PSU is not compatible\u003c\/strong\u003e with the conversion kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-group-label\"\u003eWhat the Kit Contains\u003c\/div\u003e\n\u003cp\u003eThe conversion kit contains all the parts required to transform your MK4S into a CORE One+ (Gen 2): the all-steel exoskeleton enclosure, the CoreXY motion assembly with GT1.5 belts, the redesigned heatbed mounting, the nozzle wiper, chamber ventilation hardware, the bayonet-style spoolholder, wiring, fasteners and the full assembly guide.\u003c\/p\u003e\n\u003cdiv class=\"prusa-grid-2\"\u003e\n\u003cdiv class=\"prusa-text\" style=\"background: #fdfdfd; padding: 20px; border-radius: 8px; border: 1px solid #eee;\"\u003e\n\u003ch3\u003eSupplied in the kit\u003c\/h3\u003e\n\u003cul class=\"prusa-list\" style=\"margin-bottom: 0 !important;\"\u003e\n\u003cli\u003eAll-steel exoskeleton enclosure and panels\u003c\/li\u003e\n\u003cli\u003eCoreXY motion assembly, GT1.5 belts and pulleys\u003c\/li\u003e\n\u003cli\u003eRedesigned Gen 2 heatbed mounting\u003c\/li\u003e\n\u003cli\u003eNozzle wiper and automatic top vent mechanism\u003c\/li\u003e\n\u003cli\u003eBayonet-style spoolholder\u003c\/li\u003e\n\u003cli\u003eCabling, fasteners and hardware\u003c\/li\u003e\n\u003cli\u003eStep-by-step assembly manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-text\" style=\"background: #fdfdfd; padding: 20px; border-radius: 8px; border: 1px solid #eee;\"\u003e\n\u003ch3\u003eReused from your MK4S\u003c\/h3\u003e\n\u003cul class=\"prusa-list\" style=\"margin-bottom: 0 !important;\"\u003e\n\u003cli\u003ePrint sheets\u003c\/li\u003e\n\u003cli\u003eHotend and nozzles\u003c\/li\u003e\n\u003cli\u003eNextruder assembly\u003c\/li\u003e\n\u003cli\u003eElectronics and display (newer xLCD)\u003c\/li\u003e\n\u003cli\u003eMany other proven MK4S components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 0.9rem !important; margin: 12px 0 0 !important; color: #666 !important;\"\u003eThe CORE One+ deliberately shares many parts with the MK4S. That is what makes this conversion possible — and what keeps your existing accessories useful.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-group-label\"\u003eWhat You Get Out of It\u003c\/div\u003e\n\u003cdiv class=\"prusa-grid-3\"\u003e\n\u003cdiv class=\"prusa-icon-box\"\u003e250 × 220 × 270 mm\u003cspan\u003eLARGER BUILD VOLUME\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-icon-box\"\u003e55 °C\u003cspan\u003eACTIVELY HEATED CHAMBER\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-icon-box\"\u003e~50% less\u003cspan\u003eDESK SPACE VS. ENCLOSED MK4S\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-split\"\u003e\n\u003cdiv class=\"prusa-text\"\u003e\n\u003ch3\u003eFully enclosed CoreXY architecture\u003c\/h3\u003e\n\u003cp style=\"margin: 0 !important;\"\u003eCoreXY moves a lightweight print head instead of the heavy bed, so the machine reaches much higher speeds without giving up quality. Input Shaper compensates vibration; travel speeds reach 600 mm\/s. The enclosure is structural, not an accessory — the all-steel exoskeleton is what makes that rigidity possible.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-text\"\u003e\n\u003ch3\u003eThe right environment for advanced materials\u003c\/h3\u003e\n\u003cp style=\"margin: 0 !important;\"\u003eThe compact chamber reaches up to 55 °C quickly, so ASA, ABS, PC, PA (Nylon) and carbon-filled blends print without lifted corners or split layers. Active temperature control and automatic ventilation mean PLA still prints flawlessly with the door closed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"prusa-group-label\"\u003eWhat's New in the Gen 2\u003c\/div\u003e\n\u003cul class=\"prusa-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic top vent operation:\u003c\/strong\u003e the extruder opens the vent for low-temperature materials (PLA, PETG) and closes it for high-temperature materials — a genuine set-and-forget thermal environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy flex loading:\u003c\/strong\u003e a redesigned filament insertion point makes feeding TPU and other flexibles quick and simple.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew bayonet-style spoolholder:\u003c\/strong\u003e takes various spool sizes and is ready for a direct-feed drybox.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGT1.5 belts and nozzle wiper:\u003c\/strong\u003e finer surface finish and a clean nozzle at every print start.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedesigned heatbed mounting:\u003c\/strong\u003e removes the separate heat-soak wait for bed temperatures up to 85 °C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware:\u003c\/strong\u003e every software improvement developed across the CORE One lifespan, included from the first boot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"prusa-group-label\"\u003eWho It's For\u003c\/div\u003e\n\u003cul class=\"prusa-list\"\u003e\n\u003cli\u003eMK4S owners who want an enclosed CoreXY machine without buying a second printer or selling the first.\u003c\/li\u003e\n\u003cli\u003eAnyone printing engineering materials who is tired of fighting warping on an open-frame printer.\u003c\/li\u003e\n\u003cli\u003ePrint farms and workshops recovering bench space — the CORE One+ footprint is far smaller than an MK4S inside an enclosure.\u003c\/li\u003e\n\u003cli\u003ePeople who enjoy the build. This is a full teardown-and-rebuild, in the same spirit as a Prusa assembly kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"prusa-group-label\"\u003eCompatibility \u0026amp; Installation\u003c\/div\u003e\n\u003ctable class=\"prusa-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible with\u003c\/td\u003e\n\u003ctd\u003eOriginal Prusa MK4S only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003exLCD revision\u003c\/td\u003e\n\u003ctd\u003eNewer xLCD version — contact us if you have the older revision\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eSilver PSU is \u003cstrong\u003enot\u003c\/strong\u003e compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResult after conversion\u003c\/td\u003e\n\u003ctd\u003ePrusa CORE One+ (Gen 2), equivalent to a factory machine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly\u003c\/td\u003e\n\u003ctd\u003eFull self-build with a step-by-step online manual at help.prusa3d.com\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTools\u003c\/td\u003e\n\u003ctd\u003eStandard Prusa toolset (Allen and Torx keys, pliers) — not included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReusable parts\u003c\/td\u003e\n\u003ctd\u003ePrint sheets, hotends, nozzles and many other MK4S components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background: #fdfdfd; border: 1px solid #eee; border-left: 4px solid #fa6831; padding: 20px; border-radius: 4px; margin-bottom: 40px;\"\u003e\n\u003cp style=\"margin: 0 !important;\"\u003e\u003cstrong\u003eWarranty note:\u003c\/strong\u003e consumable parts such as print sheets are not covered by the warranty, since their coatings are expected to wear over time, unless the failure results from a defect in materials or workmanship. Cosmetic damage — scratches, dents, cracks — is likewise not covered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #111 !important; color: #fff !important; padding: 32px !important; border-radius: 8px !important; text-align: center !important; margin-bottom: 40px !important;\"\u003e\n\u003ch2 style=\"color: #fff !important;\"\u003eOne printer in, a different printer out\u003c\/h2\u003e\n\u003cp style=\"color: #ccc !important; margin-bottom: 0 !important;\"\u003eCheck your xLCD and PSU, then preorder for mid-September dispatch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Prusa Research","offers":[{"title":"Default Title","offer_id":42878625939541,"sku":null,"price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/0138\/files\/bb5a4e07-6e03-429f-955a-3e54c97c179f.jpg?v=1786927037","url":"https:\/\/www.printedsolid.com\/products\/original-prusa-mk4s-to-core-one-gen-2-conversion-kit","provider":"Printed Solid","version":"1.0","type":"link"}