We’ve just opened the orders for the INDX conversion kit for the Prusa CORE One/+. You can find all the details on the product page. Still, it makes sense to have everything important summarized in one place. So here’s a clear overview of what’s available now, what’s coming next, and how the different versions compare.

Eight nozzles. True multi‑material. Virtually zero waste

INDX is a revolutionary way of looking at toolchanger systems. It’s not an evolution of a filament-switching unit or a slightly different toolchanger. It’s a new architecture. Imagine your CORE One+ loaded with eight different spools, swapping tools in seconds with near-zero waste.

This is a huge leap forward, and a wonderful example of two European companies, Prusa Research and the Swedish extrusion leaders at Bondtech, collaborating to push the entire industry forward. Bondtech’s patented design is both simple and totally ingenious.

Orders for the INDX conversion kit for the Prusa CORE One/+ are now open, with shipping of the Prusa Edition upgrade kits starting in June 2026. The Bondtech INDX Founders Edition is an exclusive version created for early adopters. The Bondtech Founders Edition begins shipping at the beginning of May, you can find updated information on the Bondtech’s website and social media.

The Convenience of 8 Independent Nozzles

Having eight standalone tools on a 3D printer is something truly unique.

Load eight filaments, install different nozzle sizes, when you start a print, everything’s already ready and loaded. Want to print detailed miniatures with organic supports? You can have a pair of 0.25 nozzles always ready to go. Install one 0.8 nozzle for large and sturdy jigs and fixtures. And keep a range of 0.4 nozzles to mix colors and materials.

By default, the INDX conversion kit for the Prusa CORE One+ ships with hardened high-flow 0.4 mm nozzles, with other nozzle diameters available for purchase separately later on.

If you like to use different filaments and nozzles, and hate constantly swapping everything around, the INDX is the solution for you.

Fast Induction Heating

The INDX Smart Head contains an induction coil – just like an induction cooktop. When it picks up a toolhead, it generates a high-frequency magnetic field that heats the nozzle from cold to printing temperature in seconds.

The nozzles themselves are nearly massless, so almost all of the heating energy goes directly into melting plastic instead of warming up a large block of aluminium. No heating block, nozzle itself is the heating element.

This combination of direct heating and low thermal mass is what gives the INDX its speed. The nozzle can heat from cold to printing temperature in just a few seconds. It also cools down really fast, which is the “holy grail” for multi-material: it eliminates oozing from parked tools without a massive, slow heat-up penalty.

Unique Self-Adjusting Grip

Soft materials need a gentler grip than rigid, fiber-filled ones. The INDX features a unique mechanism that adjusts the drive gear tension automatically, so you can move from TPU to rigid engineering filaments without stopping to retune the extruder.

That means less manual tweaking, more consistent feeding, and a much smoother experience when working with a wide range of materials in one machine.

No Wipe Tower! Just 0.013g for a Nozzle Swap.

What we’ve shown at Formnext was already the fastest toolchanger on the market, that produced the least overall waste. We knew we could push it a lot further though and we’ve been busy implementing new features and improvements since then.

One of the biggest improvements is that we’ve managed to eliminate the wipe tower entirely.

When INDX swaps materials, it only purges around 13 milligrams of plastic – 0.013 g – to stabilize the pressure inside the nozzle. That’s 5× less than the most efficient systems, and 30× less than standard filament rewinding systems.

This is all the waste INDX generates during filament change. Less than a grain of rice (13 milligrams).

That means no huge purge structures, no large piles of filament “poop,” and absolute minimum wasted material across long and complex prints.

Advanced Nozzle Wiper Made for Induction-Heated Nozzles

To make tool swaps this fast and reliable, INDX uses a custom-designed nozzle wiper that’s neatly integrated inside the chamber.

It works hand in hand with the induction nozzles. The nozzle presses against a special V-shaped groove in the silicone wiper, generating controlled back-pressure and effectively simulating real printing conditions. This stabilizes the nozzle immediately, as if it were printing a purge tower.

The tiny piece of plastic, smaller than a grain of rice, left on the wiper cools down, and during the next tool change, it cleanly falls off into the collector. The whole sequence is highly repeatable and reliable.

Loadcell For Perfect First Layers

We’ve also integrated a loadcell directly into the INDX print head for perfect and fully automatic first-layer consistency. Precise first-layer behavior matters even more on a multi-tool system, because every nozzle has to behave predictably right from the start, giving you the confidence to start complex prints without extra manual adjustment.

New Fast Automatic Nozzle Calibration

We initially used the automatic nozzle calibration system from the Prusa XL. It relies on a metal pin mounted in the middle of the print bed, which each nozzle taps from various sides.

Now the INDX conversion kit includes a brand new toolhead offset calibration system, which is permanently mounted outside the print area. It uses eddy current sensing to detect the nozzle position quickly and precisely. And if you are wondering why there are two targets, one is always reading the background noise to get extremely precise readings from the main sensor in any environment. It is an understatement to say this will become the new gold standard. With just 15 seconds per toolhead to read, down from hundreds of seconds on the XL,  the result is easier and faster setup (~20x faster) with improved repeatability.

The Automatic Top Vent

The CORE One+ introduced an ingenious way to operate the top vent fully automatically, without adding extra electronics. The print head pushes a lever before each print to open or close the top grill. We’ve ported this functionality to the new INDX top cover, using a lever. It’s the same simple solution that gives you the convenience of not having to worry about the top vent.

Comparison to existing systems

There are various solutions on the market, but each of them has some sort of compromise.

Filament-swapping systems like MMU or AMS have to unload and load the filament back and forth, which is slow and wasteful, as the previous color has to be purged out of the nozzle. While the MMU does not have as compact and streamlined form factor as the AMS, we managed to minimize the amount of waste the MMU generates – all filament scrap is purged into a single compact block.

Printers with two switchable nozzles are a special case: they may look efficient and fast on paper (like “8 seconds per nozzle swap”), but only if you limit yourself to just two materials. Add more filaments, and you end up with the same downsides and limits of filament switching systems. Plenty of waste, and filament swaps taking over 40 seconds.

This is where we saw an opportunity. What if you want the virtually zero waste and speed of a true toolchanger, but with the ease of use and scalability of a filament switcher?

In real-world use, even very large multi-material prints can end up producing only around 20-30 g of waste in total.

That’s a dramatic difference compared to pretty much any existing systems.

Differences between the Founders Edition and the Prusa Edition

The design has continued to evolve even since the Founders Edition (FE) parts were manufactured, so there are now several differences between the FE and the Prusa Edition. If FE owners want to adopt some of these changes later on, the updated components will also be offered separately as spare parts.

New Front Panel

The most visible change is on the front sheet metal panel, which serves as a dock for the individual tools. In the Prusa Edition, we’ve managed to further slim it down to allow for better view and access from the front. In terms of functionality, both versions are identical.

Reinforced plastic parts

There are also subtle differences to some of the plastic parts, such as the top cover hinge, which was reinforced and has a new lock-in position. These will of course be available for download on Printables.com.

Firmware / Software

The firmware for the printer not only includes additions for operating 8 individual toolheads, there are also several quality of life improvements, more intuitive menus and layouts. Firmware updates are applicable to both the Founders Edition and the standard edition for the CORE One+.

INDX Conversion Kit for the CORE One+

We’re starting with conversion kits for the Prusa CORE One/+, and pre-orders are now open! You can find them on the product page.

Shipping of the upgrade kits starts in June 2026.

Orders are initially limited by our production capacity. Right now we are putting up for sale the first batch, which will be shipped by the end of August. Once all the units in the first batch are sold out, we’ll switch the product to a watchdog state. You will be able to sign up for a notification as soon as more units become available, as we scale up our production.

The price for the first batch is $749/$999 (4T/8T) tariffs included, 669€/899€ (4T/8T) VAT incl.

The conversion kits for the CORE One L, along with fully assembled printers with the INDX pre-installed, are planned to become available later this year. Likewise for the upgrade kit from 4T to 8T, as well as individual tools for purchase.

If you’ve been waiting to expand your CORE One/+ with the INDX, you can get yours now!

One More Thing (Coming Soon!)

We have implemented full spectrum painting in EasyPrint, as well as a special semi-translucent CMY (Cyan, Magenta, Yellow, plus Black and White) Prusament set for perfect color mixing. That allows even the 4T INDX to do a wide range of colors in the same print, leaving more tools for different materials or nozzle sizes. We’re discussing this with u/beybladetable and we would like to take this opportunity to thank everyone in the FullSpectrum community – it is super exciting to see! Specifically u/beybladetable, @ratdoux, @justin-rabh, @wombley, @huntercook, and others.