New: Prusa Core One +, HT hotend, Drybox and INDX for Core 3D printers

During Formnext 2025 Prusa not only showed the recently announced Prusa Core One L, but also announced a upgrade for the smaller Core One on, together with a new HT-hotend, a Drybox and a future INDX system for multimaterial and color-3D printing.

Prusa Core One +, an integration of the new features of the Core One L

The Core One L has several useful features that the current Core One does not yet have:

• Automatic opening air vent for PLA and PET
• Improved spool holder
• Mechanical switch for a more reliable supply of flexible filament

This upgrade is standard included with all new Core One printers, which now Core One+ will be called. The price of the Core One+ remains the same as that of the original Core One.

High temperature hotting for the Prusa Core One and Core One L

The maximum print temperature of the Core One is 290 °C. With this hotend upgrade it is possible to print up to 400 °C. These higher temperatures are essential for technical and more complex materials such as PEKK-CF, PPS-CF and PPSU.

The new 40W hotend comes with an E3D ObXidian nozzle.

The difference between nozzle, hotend, print core and toolhead in filament 3D printing

Because we are active in an international market, like our suppliers, we often use English loan words that are not always clear. Below we explain some important terms:

Nozzle:
This is the end of the tube through which the plastic filament is pushed. The nozzle has a specific diameter. In some systems, the last part of the tube and the nozzle are supplied as one. This is the case, for example, with Prusa, under the name Nextruder.

Hotend:
This is the heated block that melts the plastic filament just before it reaches the nozzle. In many cases the nozzle is screwed directly into the hotend.

Printcore / Toolhead:
The full combination of tube, nozzle and hotend. UltiMaker uses the term Print and delivers this as a whole. Prusa uses the term Toolhead and supplies the parts separately.

Prusa USS Drybox

The soon available Prusa USS Drybox (Universal Storage System) is a polypropylene container in which filament can be stored airtight. It is also possible to connect the drybox directly to the printer and print directly from the drybox. This prevents the filament from absorbing moisture during printing, a problem that occurs especially in materials such as nylon and PVA.

This drybox contains a separate compartment to add silica, it has a hydrometer and can be clicked on the printer. The drybox is also designed to be stacked.

Prusa Bondtech INDX Upgrade for Core One and Core One L

Prusa is developing a multimaterial-3D printing option for the Core One and Core One L in collaboration with Bondtech. The INDX system makes it possible, as with the Prusa XL, to change the print cores as soon as another filament is needed.

This offers a faster solution than the MMU3 upgrade, which uses one print head and only changes the filament. This wastes relatively much time because after each change the print head has to be rinsed (purgen).