Prusa's new OpenPrintTag – Smart reels, open standard

Openly conceived, intelligently connected: Introducing the Prusa OpenPrintTag !

Author: Carsten Hemmerling
Source: Prusa Research

Prusa Research recently announced that they "want to find new ways to connect 3D printers and materials even more intelligently." Today we'll show you what that means.
Introducing the Prusa OpenPrintTag – the open NFC standard for smart filament spools.

A small revolution on the reel

With OpenPrintTag, Prusa Research is launching a new chapter in the world of 3D printing. The idea is as simple as it is ingenious: Each spool is equipped with a small, programmable NFC chip. All the important information is stored directly on it – filament type, color, remaining length, and batch number.
The best part: The standard is open , manufacturer-independent , and free to use .

This means that any manufacturer can equip their own filaments with OpenPrintTag.
Every maker, every workshop and every printing farm can read the data.
And all of this works without an internet connection or cloud requirement.

Smart coil, smart workflow

If you've ever accidentally loaded the wrong material into the printer, you know: it can cost hours. OpenPrintTag puts an end to exactly that.
As soon as the spool is attached, the printer automatically recognizes which filament is loaded – whether PLA, PETG or ASA – and selects the appropriate print profile.

This saves time, avoids errors and ensures greater efficiency in production.
Especially in print farms or at service providers, this makes the difference between "it sort of works" and "runs smoothly throughout".

Open to everyone – really everyone

Prusa Research makes the OpenPrintTag available not exclusively, but completely openly .
The specifications are freely available, the data structure is documented, and the interfaces are described.
This allows any manufacturer, from small start-ups to large material producers, to develop their own coils or systems that are compatible.

This achieves a goal that many makers have long been demanding:
A common, open standard for smart filament.

New coil, new design

Along with OpenPrintTag, Prusa Research is also introducing a newly designed Prusament spool .
It is more robust, lighter, 3 mm narrower and more heat-resistant – perfectly suited for drying systems or printers with closed chambers.
And of course: The OpenPrintTag is already integrated.

Source: PrusaResearch

What does that mean for you?
Whether you work as an engineer, model maker or manufacturing professional – OpenPrintTag makes everyday life easier.

• No more guesswork about what material is on the roll.
• Automatic detection in the printer or slicer.
• Uniform data structures for warehousing, tracking and documentation.
• Less waste , as the coils are reusable and the chips are rewritable.

This creates an ecosystem that is more efficient, sustainable and future-proof.

Ready for the future

The OpenPrintTag is more than just an NFC chip – it is a commitment to openness and collaboration.
It connects manufacturers, users and machines in a way that makes 3D printing smarter, more transparent and more sustainable.

And the best part: The first spools with integrated OpenPrintTag are already available in the Prusa e-shop.
The specifications and implementation examples can be found at openprinttag.org .

Open. Simple. Forward-looking.
This is the OpenPrintTag from Prusa Research.