Ending the Wild West of Smart Spools
An open-source initiative by Prusa Research creating a single smart spool standard that works across all brands and ecosystems. This allows printers and users to read and write data directly on any spool, making 3D printing more reliable and intuitive for everyone.
3D printers have become incredibly user-friendly, but interaction with filament is still a very manual process. To improve the user experience and streamline the workflow, we need smart spools.
A smart spool carries all the important information about the material and its workflow, unlocking key features:
Instantly identifies the material type and color, significantly reducing user error and leading to a simpler, more reliable workflow.
Real-time data tracking, such as the amount of remaining filament, so you always know the exact status of your material.
Enables effortless inventory management and full traceability by allowing you to log custom data.
Some smart spools already exist, but they lack the core principles of universality and interoperability. It's like every brand suddenly decided to use a different filament diameter.
Smart spools are often locked to their specific hardware and filament. This makes them unusable with any third-party machines, forcing users into a closed ecosystem.
Many smart spools just refer to an online database, forcing you to rely on the manufacturer's cloud service. No internet? Your "smart" spool becomes dumb.
Current Smart Spools offer little to zero reusability. This read-only design prevents any updates to live data, and once the filament is depleted, you have no choice but to throw the 'smart' spool away.
Stardew Valley save files are stored as XML data separately from the game's installation folder. This means you can safely update or reinstall the game without losing your farm.
Stardew Valley keeps a backup of the previous day. Open your specific farm's folder.
Find the files with _old at the end and rename them by removing the _old suffix.
If you use SMAPI for modding, it automatically keeps up to 10 daily backups in the save-backups subfolder within your main game directory. 3. Restore Missing or Corrupted Saves
Each farm has its own folder, usually named CharacterName_123456789 . Right-click the entire folder and select .
Note: The AppData folder is hidden by default. Use the tab in File Explorer and check Hidden items to see it. Linux: Typically found at ~/.config/StardewValley/Saves . macOS: Located at ~/.config/StardewValley/Saves . 2. Back Up Your Save Data
Stardew Valley save files are stored as XML data separately from the game's installation folder. This means you can safely update or reinstall the game without losing your farm.
Stardew Valley keeps a backup of the previous day. Open your specific farm's folder.
Find the files with _old at the end and rename them by removing the _old suffix.
If you use SMAPI for modding, it automatically keeps up to 10 daily backups in the save-backups subfolder within your main game directory. 3. Restore Missing or Corrupted Saves
Each farm has its own folder, usually named CharacterName_123456789 . Right-click the entire folder and select .
Note: The AppData folder is hidden by default. Use the tab in File Explorer and check Hidden items to see it. Linux: Typically found at ~/.config/StardewValley/Saves . macOS: Located at ~/.config/StardewValley/Saves . 2. Back Up Your Save Data
Whether you're a manufacturer, developer, or 3D printing enthusiast, OpenPrintTag makes your workflow smarter.
Complete data format and protocol specification for NFC tag implementation
Physical implementation guidelines and hardware requirements
Want to integrate OpenPrintTag or become a partner? Stardew Valley save files are stored as XML
Get in touch at [email protected]
Explore the specification, examples, and SDKs to integrate OpenPrintTag into your projects. Open your specific farm's folder
Download logos, images, and media files for OpenPrintTag
