{"product_id":"prusa-uss-drybox","title":"Prusa USS Drybox - Filament Drying Box for Prusa Printers","description":"\u003ch1 data-testing=\"item-name\" class=\"product-detail__title\"\u003ePrusa USS Drybox\u003c\/h1\u003e\n\u003cp\u003eThe USS Drybox from Prusa is a compact, airtight storage solution that protects your filament from moisture and simplifies daily use. It mounts directly onto a spool holder, allowing you to draw filament without opening the box and simplifying spool storage. Ideal for anyone serious about print quality and material longevity.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cb\u003eKey Features\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003eAirtight construction in hydrophobic PP\u003c\/li\u003e\n\n\u003cli\u003eMounts directly onto the spool holder\u003c\/li\u003e\n\n\u003cli\u003eFilament opening allows filament to be drawn without opening the box\u003c\/li\u003e\n\n\u003cli\u003eMinimizes internal volume to reduce humidity\u003c\/li\u003e\n\n\u003cli\u003eStackable design for organizing multiple spools\u003c\/li\u003e\n\n\u003cli\u003eHelps keep filament dry and ready for printing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2 data-start=\"3330\" data-end=\"3716\" id=\"isPasted\"\u003eMoisture-Resistant Design\u003c\/h2\u003e\n\u003cp data-start=\"3330\" data-end=\"3716\"\u003eThe USS Drybox is made from hydrophobic polypropylene (PP), a material significantly less permeable to moisture than common polycarbonate boxes. It performs well even without added desiccant. With its unique central opening, the box mounts directly onto a spool holder, reducing the free internal volume where humid air can accumulate.\u003c\/p\u003e\n\u003ch2 data-start=\"3718\" data-end=\"4205\"\u003eOptimized for Daily Workflow\u003c\/h2\u003e\n\u003cp data-start=\"3718\" data-end=\"4205\"\u003eA key advantage of the Drybox is how seamlessly it integrates into your workflow. Instead of removing the spool for every print, you position it once and leave it there until the filament is used up. The rubber cap with a special opening holds the filament end, allowing you to draw filament without opening the box, which reduces exposure to humid ambient air. Because the box is stackable, organizing multiple spools becomes simple and efficient.\u003c\/p\u003e\n\u003ch2 data-start=\"4207\" data-end=\"4564\"\u003eReliable Filament Storage — Not a Drying Unit\u003c\/h2\u003e\n\u003cp data-start=\"4207\" data-end=\"4564\"\u003eThe Drybox does not actively dry filament that has already absorbed moisture. Instead, it maintains a low-humidity environment, ensuring properly pre-dried filament remains ready for printing. For best results, it should be used as part of a workflow where filament is dried beforehand and then stored in the box.\u003c\/p\u003e\n\u003ch2 data-start=\"4566\" data-end=\"4964\"\u003eWhy It Matters\u003c\/h2\u003e\n\u003cp data-start=\"4566\" data-end=\"4964\"\u003eMoisture significantly affects the performance of many filament types, especially hygroscopic materials. By minimizing moisture absorption, you get more consistent prints with better adhesion, strength, and surface quality. The USS Drybox provides a practical and reliable system that preserves material quality, reduces preparation time, and integrates seamlessly into your daily setup.\u003c\/p\u003e\n\u003cp data-start=\"4566\" data-end=\"4964\"\u003e \u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"272\"\u003e\u003cstrong data-start=\"0\" data-end=\"35\"\u003eWet filament = ruined prints\u003c\/strong\u003e\u003cbr data-start=\"35\" data-end=\"38\"\u003eWhen wet filament hits the hot nozzle, the water inside the material instantly boils and expands. This creates steam bubbles that are forced out of the nozzle, leading to stringing, oozing, and a rough surface instead of smooth walls.\u003c\/p\u003e\n\u003chr data-start=\"274\" data-end=\"277\"\u003e\n\u003ch2 data-section-id=\"147nf3g\" data-start=\"279\" data-end=\"323\"\u003eNo more problems with wet filament\u003c\/h2\u003e\n\u003cp data-start=\"324\" data-end=\"656\"\u003eMost filament storage boxes are just repurposed food containers. We developed the Prusa USS Drybox from scratch for 3D printing, made from special hydrophobic materials. It's a sealed storage container based on a simple idea: put the spool in the box, print directly from it, and leave it there until it's empty.\u003c\/p\u003e\n\u003chr data-start=\"658\" data-end=\"661\"\u003e\n\u003ch2 data-section-id=\"17tmmmh\" data-start=\"663\" data-end=\"691\"\u003eUnique quick access port\u003c\/h2\u003e\n\u003cp data-start=\"692\" data-end=\"851\"\u003eAccess and load filament without opening the lid. The sealed port keeps moisture out during printing and fits a PTFE tube perfectly for direct connection.\u003c\/p\u003e\n\u003chr data-start=\"853\" data-end=\"856\"\u003e\n\u003ch2 data-section-id=\"1gvniir\" data-start=\"858\" data-end=\"882\"\u003eUniversal mounting\u003c\/h2\u003e\n\u003cp data-start=\"883\" data-end=\"1093\"\u003eA clever central opening allows the box to be mounted directly onto your existing spool holder (Prusa bayonet spool holder). This also minimizes the free internal air volume where humid air can accumulate.\u003c\/p\u003e\n\u003chr data-start=\"1095\" data-end=\"1098\"\u003e\n\u003ch2 data-section-id=\"8lkg8v\" data-start=\"1100\" data-end=\"1122\"\u003eStackable design\u003c\/h2\u003e\n\u003cp data-start=\"1123\" data-end=\"1261\"\u003eThe flat sides allow the boxes to be stacked neatly. One box per spool: load the spool once and leave it there until the roll is empty.\u003c\/p\u003e\n\u003chr data-start=\"1263\" data-end=\"1266\"\u003e\n\u003ch2 data-section-id=\"bo1ai1\" data-start=\"1268\" data-end=\"1300\"\u003eFits most spools\u003c\/h2\u003e\n\u003cp data-start=\"1301\" data-end=\"1411\"\u003eThe box is large enough to accommodate standard spools from almost all brands (up to 1 kg) as well as smaller specialty spools.\u003c\/p\u003e\n\u003chr data-start=\"1413\" data-end=\"1416\"\u003e\n\u003ch2 data-section-id=\"1jg3ckk\" data-start=\"1418\" data-end=\"1431\"\u003eKey figures\u003c\/h2\u003e\n\u003cp data-start=\"1432\" data-end=\"1466\"\u003e\u003cstrong data-start=\"1432\" data-end=\"1466\"\u003eWhy choose Prusa USS Drybox\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1468\" data-end=\"1726\"\u003e\n\n\u003cli data-section-id=\"ajjiko\" data-start=\"1468\" data-end=\"1518\"\u003e95% less moisture absorption (vs. ambient air)\u003c\/li\u003e\n\n\u003cli data-section-id=\"17nk1y5\" data-start=\"1519\" data-end=\"1594\"\u003e5× more airtight (vs. generic dryboxes, on par with museum quality)\u003c\/li\u003e\n\n\u003cli data-section-id=\"2hgxjn\" data-start=\"1595\" data-end=\"1644\"\u003e50% better seal (vs. generic dryboxes)\u003c\/li\u003e\n\n\u003cli data-section-id=\"bzqrdp\" data-start=\"1645\" data-end=\"1668\"\u003eStable for several weeks\u003c\/li\u003e\n\n\u003cli data-section-id=\"13coq1e\" data-start=\"1669\" data-end=\"1726\"\u003e10% relative humidity using 50 g silica gel\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr data-start=\"1728\" data-end=\"1731\"\u003e\n\u003ch2 data-section-id=\"hlq55f\" data-start=\"1733\" data-end=\"1761\"\u003eMoisture absorption over time\u003c\/h2\u003e\n\u003cp data-start=\"1762\" data-end=\"1820\"\u003eMeasured with Prusament PCCF filament without silica gel in the box.\u003c\/p\u003e\n\u003cp data-start=\"1822\" data-end=\"1938\"\u003e\u003cstrong data-start=\"1822\" data-end=\"1848\"\u003eWhy it matters\u003c\/strong\u003e\u003cbr data-start=\"1848\" data-end=\"1851\"\u003ePCCF filament absorbs moisture quickly. At 0.12% water content, print quality deteriorates.\u003c\/p\u003e\n\u003chr data-start=\"1940\" data-end=\"1943\"\u003e\n\u003ch2 data-section-id=\"1ly8tlf\" data-start=\"1945\" data-end=\"1978\"\u003eMuseum-quality sealing\u003c\/h2\u003e\n\u003cp data-start=\"1979\" data-end=\"2222\"\u003eIn addition to measuring moisture absorption over time, we tested the seal using the CO₂ decay method. By measuring how slowly a tracer gas escapes the container, we can precisely determine how often the air inside is replaced with humid air from the room.\u003c\/p\u003e\n\u003cp data-start=\"2224\" data-end=\"2652\"\u003eWhile a common ziplock bag quickly leaks air, and even dedicated generic dry boxes struggle to maintain a complete seal, the Prusa USS Drybox is significantly more airtight. Its performance reaches a level of airtightness typically only required for museum display cases for preserving fragile historical artifacts. This means your filament remains in a controlled environment, protected from the outside world, for much longer than standard solutions.\u003c\/p\u003e\n\u003chr data-start=\"2654\" data-end=\"2657\"\u003e\n\u003ch2 data-section-id=\"1xvjh4g\" data-start=\"2659\" data-end=\"2684\"\u003ePractical features\u003c\/h2\u003e\n\u003cp data-start=\"2685\" data-end=\"2705\"\u003e\u003cstrong data-start=\"2685\" data-end=\"2705\"\u003ePrusa USS Drybox\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2707\" data-end=\"3076\"\u003e\n\n\u003cli data-section-id=\"8prf0n\" data-start=\"2707\" data-end=\"2807\"\u003eIntegrated sensor\u003cbr data-start=\"2726\" data-end=\"2729\"\u003eAlways in control of internal conditions. Built-in hygrometer and thermometer (°C\/°F).\u003c\/li\u003e\n\n\u003cli data-section-id=\"fh41qo\" data-start=\"2809\" data-end=\"2945\"\u003eLabel holder\u003cbr data-start=\"2824\" data-end=\"2827\"\u003eIdentify materials easily with included labels or 3D-print your own tags via a template from Printables.com.\u003c\/li\u003e\n\n\u003cli data-section-id=\"1iz3bvo\" data-start=\"2947\" data-end=\"3076\"\u003eSmart side access\u003cbr data-start=\"2965\" data-end=\"2968\"\u003eSmall side flaps allow for manual spool rotation or silica gel replacement without opening the entire box.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr data-start=\"3078\" data-end=\"3081\"\u003e\n\u003ch2 data-section-id=\"1tym3e6\" data-start=\"3083\" data-end=\"3111\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp data-start=\"3113\" data-end=\"3337\"\u003e\u003cstrong data-start=\"3113\" data-end=\"3150\"\u003eWhich spool holders are supported?\u003c\/strong\u003e\u003cbr data-start=\"3150\" data-end=\"3153\"\u003eThe Prusa USS Drybox fits perfectly on the bayonet spool holder of the Prusa CORE One+ and CORE One L. For CORE One, XL, MK4\/S\/+ and HT90, printable adapters are available (coming soon on Printables).\u003c\/p\u003e\n\u003cp data-start=\"3339\" data-end=\"3518\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"3339\" data-end=\"3374\"\u003eCan I print directly from it?\u003c\/strong\u003e\u003cbr data-start=\"3374\" data-end=\"3377\"\u003eYes. The sealed PTFE outlet allows the printer to pull filament with low friction while the internal environment remains airtight.\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"149\"\u003e\u003cstrong data-start=\"0\" data-end=\"30\"\u003eIs desiccant included?\u003c\/strong\u003e\u003cbr data-start=\"30\" data-end=\"33\"\u003eYes. There is space for 50 g of silica gel, which can maintain approximately 10% relative humidity (RH) for several weeks at a time.\u003c\/p\u003e\n\u003cp data-start=\"156\" data-end=\"465\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cstrong data-start=\"156\" data-end=\"198\"\u003eDoes it work with my non-Prusa printer?\u003c\/strong\u003e\u003cbr data-start=\"198\" data-end=\"201\"\u003eYou can feed filament directly from the box to any 3D printer. Mounting the drybox to the printer works with compatible spool holders, such as those on Prusa 3D printers (bayonet-lock spool holder) or other community-made spool holders for other printers.\u003c\/p\u003e","brand":"Prusa Research","offers":[{"title":"Default Title","offer_id":59762625085774,"sku":"8594173672116","price":249.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/2115\/1637\/files\/55cab67f-219a-4e36-a818-d2265b35693a.jpg?v=1780038980","url":"https:\/\/www.3dsaga.com\/en-se\/products\/prusa-uss-drybox","provider":"3Dsaga.com","version":"1.0","type":"link"}