Hey everyone. Here's the update that was emailed to Prusa INDX customers directly, attached here again for trasparency and convenience for interested parties outside of this group.

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Hi,

We have another update regarding your INDX Conversion Kit order. This time, we have some good news and enough information to move forward, and start shipping later this week.

In our previous email, we shared Bondtech’s confirmation that the nozzles supplied for INDX are surface-hardened, rather than fully hardened as originally specified by Bondtech. We therefore postponed shipping while we investigated what this means in practice and waited for Bondtech to finalize the compensation for our customers. We have been running extensive wear tests ever since.

Testing results

With standard carbon-fiber materials such as PETG-CF, PC-CF and PA-CF, we have so far struggled to wear the current INDX nozzles to the point where we can identify any deterioration in print quality.

Each of our PETG-CF nozzles went through 10 kg of material printed. The PC-CF nozzles currently track 5 kg of material and PA-CF about 2-3 kg each. We can measure some minimal wear at the nozzle orifice, but so far we have not seen a corresponding change in extrusion width, print accuracy or visible print quality.

That means the nozzles do wear, as all nozzles eventually do, but their real-world abrasion resistance is significantly better than Bondtech’s initial concerns suggested.

PETG Ultraglow serves as our accelerated wear test, since it is known to wear out most nozzles on the market at a fast rate. We are still accumulating more data, the topic of hardened nozzles is complex and interesting, so we will likely publish a larger blog post covering our findings.

If your main use case is a machine dedicated to printing abrasive materials, these nozzles are not the ideal solution.

Bondtech is investigating more wear-resistant nozzles, but there is currently no confirmed availability date, price, or guarantee that such a product will become available. We don't want to keep your order waiting for something we cannot promise.

Compensation for your order

Regardless of the test results, the current nozzle specification is different from what was advertised when you placed your order. Bondtech is therefore providing compensation for customers whose kits ship with these nozzles. Since you purchased your INDX from us, we will handle this compensation directly for you.

You can choose:

8-tool INDX kit: $160 / €140 Prusa Store credit, or $120 / €104 cash refund.

4-tool INDX kit: $80 / €70 Prusa Store credit, or $60 / €52 cash refund.

We will send out the vouchers via email in waves, synchronized with the shipping of individual INDX batches. If you can’t find the voucher in your inbox within 2-3 days after your INDX has arrived, please contact our tech support team. If you prefer the cash refund instead, you can request it by reaching out to our support via live chat or email.

An additional gift from us

In the previous email, we’ve teased that regardless of the solution Bondtech offers, we’re adding something on top of that.

We can now reveal what it is: the newly announced hardware upgrade that turns your CORE One+ into the latest CORE One+ (Gen 2).

We include this upgrade for the initial batch Prusa INDX conversion kit orders, at our own expense. Specifically the new belts, the belt pulleys and new thermal expansion joints, all resulting in better print quality, faster print starts and better ease of use. So you can upgrade your printer to the latest version while installing the new INDX parts. You can find the installation instructions in our CORE One+ (Gen 2) upgrade guide.

Shipping is ready to start this week

INDX Conversion Kits will ship in the existing queue, based on the date and time of the order, as we receive tool shipments from Bondtech. You do not need to do anything if you want to keep your order.

If the current nozzle specification doesn't work for your use case, you can of course cancel your order before shipment and receive a full refund at no cost to you. After delivery, you will also remain covered by our extended 60-day return policy.

We know there has been a lot of information around the INDX nozzles over the past few weeks. We deliberately took the time to test them extensively before giving you another answer, and we're happy that the real-world results are considerably more positive than our initial accelerated testing suggested.

Thank you again for your patience.

Prusa Research Team

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For information about the Bondtech email, you can follow the discussion here: https://www.reddit.com/r/prusa3d/comments/1vskl71/bondtech_update_on_indx_nozzles/

Hey everyone!

Massive summer update from our side can be found here: https://blog.prusa3d.com/better-prints-easier-use-prusa-xl-core-one-l-and-core-one-gen-2-our-big-product-update_137539/

While there is a ton of content to go with, and I would encourage you to check the full article when you have the time to do so, here's a short summary of the news:

We're doing a focus on quality of life improvements on our printer lineup with a focus on CORE One+ (gen 2), CORE One L+ and XL+ printers. The goal is faster pre-print preparations, cleaner results, fewer calibrations and tuning. Throughout the development, we went through a lot of community feedback, and a massive thank you for that. To give a quick example, one of the most frequent requests was a nozzle wiper, which is now available on all three machines.

Availability and price:
Price will stay the same for the printers. Assembled printers are immediately shipping out updated (XL slightly later in August). Kits and upgrades will be rolling out during this month (and possibly early September). Unshipped orders are automatically updated to the new versions.

XL+

• Improved 360 cooling (same as MK4S and CORE One)
• New Eddy-current sensor (similar to INDX) for 20x faster and better tool alignment
• GT1.5 belts
• High flow nozzle as default
• Nozzle wiper
• Enclosure can now reach 50 °C
  • Soon to be available active chamber heater can push it to 60 °C
• Improved cooling for electronics

CORE One L+

• GT1.5 belts
• Nozzle wiper

CORE One+ (gen2)

• GT 1.5 belts
• Nozzle wiper
• New heatbed expansion joints
  • Allows skipping the absorbing heat phase completely when 85 °C and lower bed temps. Higher temps are faster
• Snap-on top panel (same as L) with vent improvements

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Software and other news:

• Automatic Pressure advance for Nextruder in an upcoming software update
• Slicer 3.0 - First Alpha version coming in weeks
• High temp hotend arrives (finally) in September
• Prusa Connect Local to replace PrusaLink

INDX news:

• Compensation (full update including nozzles etc) coming early next week
• Shipping starts very soon after that
• CORE One L testing is active and going well. More news soon

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Please be sure to check the blog for more details, and if you are curious about some specifics, I'll do my best to help provide them.

Our July Print of the Month contest hit big! It's always a pleasure to see what the community is working on and printing. Join in for the chance to enter the raffle and win an entire Original Prusa MK4S kit, as well as 3x 1050 Prusameters for selected top entries!

https://preview.redd.it/c0ug5aexlyhh1.png?width=750&format=png&auto=webp&s=95f1a59cb6fbc710a26529b6827d9baf2ff14acc

Show us whatever you've been printing! We're back to the MK4S kit as the raffle reward, so whoever wins the raffle this round gets a whole new printer to put straight to work on their next entry!

Raffle Winner - July 2026

Our raffle winner for the paint set is: u/ArtemixDesign! Congratulations, and I've sent you a DM with more information! Be sure to join us on Discord/YouTube for the stream each month (1st Thursday of the month) to join in on the fun (not required to win).

July Prusameter Winners

Here are the three featured winners from July:

• u/Fluffy_Elephant_7476 - Modular wall-mounted spool holder
  • Filament chaos, meet your match. This modular system lets you snap together exactly as many spool slots as your stash demands, wall-mounted and endlessly expandable. Pro tip from the designer: print the pieces on their side, they hold up much better that way.
• u/Naerina - The Gremlin
  1. The "kitten" from the shelter turned out to be a fully-fledged, plant-murdering gremlin, and this sculpt captures him red-pawed with his weapon of choice in hand. Sculpted in Blender and assembled with glue and a bit of string, no MMU or INDX required to recreate the crime scene.
• u/Lncendos - Modular keycap drawer storage
  • Built as a gift for a keycap-collecting, custom-keyboard-building dad who needed somewhere to put all those loose caps. Fully parametric in FreeCAD, complete with a clever tilt-lock so drawers won't slide out on their own, plus a mountable nameplate so each set stays labeled and easy to find.

The winners will receive their Prusameters within a week.

How to Participate:

If you haven't joined before, here's a quick reminder of how it works:

• Create a post with your print (anything you have printed on a Prusa3D printer).
• Add the flair: "Print of the Month".
• Credit the model and its author.
• Include your Printables handle so we can send you Prusameters if you win.
• Designer Exception: Don't have a 3D printer? If you have a project on Printables, link one of the MAKES of it. This needs to be a real print done by someone and submitted as a make, and the model must be hosted on your own Printables account.

Rules

• We'll go through all the prints at the end of the month and announce the winners at the start of the next one.
• Only a single entry counts for the raffle per Printables/Reddit account, but we encourage you to share as many prints as you like.
• Raffle Eligibility: Accounts must be 1+ month old and posts must have at least 10 upvotes. Exceptions are possible for high-quality posts from new users.
• Extremely low-effort or duplicate/spam posts may be removed and disqualified at the moderator's discretion.
• The entries are counted from the 1st of the month to the last day of the month, so no entry is missed.
• The raffle draw is done on the monthly community live stream, on the first Thursday of every month (stream starting at 19:00 GMT+1, lasting about 2 hours). It's not required to be online to win.

The winning photos might also appear on our other social media channels to show off what our community can do. We're looking forward to seeing your prints!

Hey everyone!

The update was sent via email to everyone with an active INDX order, however I'm including the text here too for convenience and interested 3rd parties. I will try to help answer questions you might have, but I can't provide much more outside of what was specified in the text.

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Hi,

Thanks again for being part of the first wave of the INDX Conversion kit for the CORE One/+ printer. With the founders wave having been shipped out, we’ve been seeing some amazing feedback and projects from the community, as well as many videos from creators, such as a recent feature from Linus Tech Tips! While we're extremely excited to get the product to you soon, there are a few important updates that you need to be aware of, so lets rip the bandaid off with the most critical of news:

Shipping postponed until mid-August

We planned to start shipping the INDX conversion kits for CORE One/+ by the end of July. We have now postponed the start of shipping until mid-August.

This decision is the result of a recent update from Bondtech.

Bondtech has recently confirmed that the nozzles currently supplied with the INDX system are surface-hardened rather than fully hardened as originally planned, and has not yet finalized the compensation plan for affected customers. We believe it is better to wait until both we and you have clearer information, rather than ship the kits while this important question remains unresolved.

More important information about the supplied nozzles

If you bought the INDX with the intention of printing mainly abrasive filaments, the currently available configuration is not suitable for this purpose. Bondtech specifically mentions in their Wednesday’s blog post: “The currently shipped nozzles are great for the vast majority of 3D prints and an incredibly wide range of filaments (PLA, PETG, ABS, ASA, TPU, TPE, PVA, BVOH, HIPS, PC, Nylon, PP, PBT, unfilled PC Blend, and other non-abrasive materials). These materials will perform exactly as they should with the high-quality steel nozzle you received. Materials like Prusa Galaxy filaments and similar are also fine as they do not contain abrasive particles.”

As soon as we learned about the issue, we shifted our focus specifically onto abrasive filaments, and these were our early findings:

After printing 5 kg of PETG-CF on several printers, the nozzles still showed great print quality and little to no wear. However, when printing just 100g of our super-abrasive Ultraglow filament, the protective coating appears to wear through. And after that, the performance degrades rapidly, causing wider extrusion lines and reducing print accuracy before making the nozzle completely unusable. This is likely why we didn't pick up on this during our own testing, as while many testers tried abrasive materials, it was with limited quantities and alternating nozzles and with great results.

We are also updating the product information in our e-shop to reflect the current nozzle specification and its suitability for different materials.

Per Bondtech, the manufacturing of the INDX tools (nozzles) is very difficult at scale. This is also slowing the supply for us. We may not receive enough tools to complete the full first batch by the end of August, but we will ship every conversion kit we can.

What we are doing for you as a Prusa customer

Proper hardened nozzles are probably quite far away. We didn’t want to sit idly, so regardless of the solution Bondtech ultimately offers, we’re adding something on top of that. We will include additional hardware for the initial batch Prusa INDX conversion kit orders, at our own expense. We will be sharing specifics about it in the near future (before shipping), and you’ll know it when you see it.

As for the hardened nozzles, we are waiting for details from Bondtech and cannot provide a reliable availability date or price. Developing, validating and preparing these nozzles for serial production is expected to take time.

All INDX Conversion kits for the CORE One/+ orders will ship in order, based on the date and time of the order.

Your return and refund options

It goes without saying that you can, of course, cancel your order anytime before the shipment and receive a full refund. As mentioned in the beginning, shipping has been postponed to mid-August, giving you additional time to review this information and decide whether you would like to keep or change your order. And even after delivery, you will still be covered by our extended 60-day return policy.

Firmware and Hardware Improvements

We know this situation is frustrating, so we'd like to wrap up on a slightly more positive note. We’ve spent the past several weeks improving and tuning the entire INDX system. We are listening closely to early feedback, and new firmware with fixes and features are being released regularly to ensure the best possible performance.

We have recently published an entire blog article detailing many of the changes. Head over to our blog to learn more.

Here’s a quick recap:

• Massive print quality improvement
• Improved nozzle cleaning process
• Support for a large external waste bin
• Faster calibrations
• Overall reliability and stability improvements

Since then, we have also developed a much larger tool-change purge bin that fits into the outer cavity of the right-side panel. It can hold waste from tens of thousands of tool changes before it needs to be emptied. You will be able to print the bin yourself using our free model, while the required perforated side panel will be available through our e-shop (or you can adapt your existing side panel).

More updates are on the way as we’re further improving and fine-tuning the firmware with better user experience and INDX performance.

Prusa Research Team

Our June Print of the Month contest hit big! It's always a pleasure to see what the community is working on and printing. We're changing things up again, so join in for the chance to enter the raffle and win a Prusa Starter Paint Set + Miniature Painting for Beginners Course Bundle, as well as 3x 1050 Prusameters for selected top entries!

https://preview.redd.it/8wclao0g9fch1.png?width=1920&format=png&auto=webp&s=789d73bf13b92c80d6c59ee748dbeb09f528fa69

We're rolling into the July 2026 round with a splash of color! This month's special theme is: Colorful Prints. Whether it's dual-color, multi-material, dyed, hand-painted, or just an unreasonably vibrant single-color print, show us your most eye-catching work. Fitting timing too, since our raffle winner this round could put that new paint set straight to use on their next entry!

Raffle Winner

Our raffle winner for the June Prusa Backpack by Braasi is: u/lostboy73! Congratulations, and I've sent you a DM with more information! Be sure to join us on Discord/YouTube for the stream each month (1st Thursday of the month) to join in on the fun (not required to win).

June Prusameter Winners

Here are the three featured winners from June:

• u/Lncendos - Glitch Benchy – what do I calibrate to fix this?
  • Calibration issues are usually something to fix, not print on purpose, but here we are. Turns out a blocky, glitched-out tugboat prints just as cleanly on resin as it does on FDM. A fun reinterpretation of the classic Benchy, modeled entirely in Blender.
• u/Far-Government7397 - Why buy a space mouse when you can build one
  • Every community has that one person quietly out-engineering the $100+ commercial options in their garage, and this month it's HackMan3D. Four months of work went into this fully DIY, Hall-effect 6DoF space mouse for navigating CAD software and slicers alike. Here's hoping the "should I open-source it" question gets answered with a yes.
• u/FritzPeppone - Completely Lego-converted Core One
  • Some mods you admire, others you actually want to build yourself, and this is the second kind. A full magnetic LEGO-compatible skin for the CORE One, covering everything down to the Nextruder, that snaps on and off without touching the printer underneath. Model's up on Printables if you want to give your own CORE One the treatment.
• Special theme winner:
  • u/Ok-Video4323 - Fully printable tote bag
    • When going out, make sure you go out in style! Nice printable fashion is sure to make you the star on any outdoor and beach setting!

The winners will receive their Prusameters within a week.

How to Participate

If you haven't joined before, here's a quick reminder of how it works:

• Create a post with your print (anything you have printed on a Prusa3D printer).
• Add the flair: "Print of the Month".
• Credit the model and its author.
• Include your Printables handle so we can send you Prusameters if you win.
• Designer Exception: Don't have a 3D printer? If you have a project on Printables, link one of the MAKES of it. This needs to be a real print done by someone and submitted as a make, and the model must be hosted on your own Printables account.

Rules

• We'll go through all the prints at the end of the month and announce the winners at the start of the next one.
• Only a single entry counts for the raffle per Printables/Reddit account, but we encourage you to share as many prints as you like.
• Raffle Eligibility: Accounts must be 1+ month old and posts must have at least 10 upvotes. Exceptions are possible for high-quality posts from new users.
• Extremely low-effort or duplicate/spam posts may be removed and disqualified at the moderator's discretion.
• The entries are counted from the 1st of the month to the last day of the month, so no entry is missed.
• The raffle draw is done on the monthly community live stream, on the first Thursday of every month (stream starting at 19:00 GMT+1, lasting about 2 hours). It's not required to be online to win.

If you enjoy this kind of contest, we'll keep going with new themes every month. The winning photos might also appear on our other social media channels to show off what our Reddit community can do. We're looking forward to seeing your prints!

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Special note: I'm sorry the post is extremely late this month, with all the INDX excitement things slipped away from me. I promise not to delay it so much again!

Hey everyone!

So the goal of the post is to show some prints that I have done, some issues that I have run into and also to share my personal experience and opinion of the INDX, so I guess kinda a review that is not in any way an actual review.

Full disclaimer from the start: I'm Prusa staff and I have been testing the INDX system for a decent time now. I work closely with the developers and most of our teams, but most of the printing I have done is just me doing my thing. The unit that I have been using has gone through several revisions including toolhead reassemblies, nozzle changes and other the addition and changes of numerous other parts of the printer. I have not been in the beta testing since the beginning myself (only joined around 1/2 way through), though I have been following along with the process of colleagues. I have also performed several factory resets and partial printer rebuilds in this time. Most of my photos were captured specifically for internal bug reporting in unoptimized profiles, so they intentionally highlight the worst-case scenarios. Keep this context in mind when looking at the flaws. This is a look at the gritty testing phase, not the final polished experience!

Assembly: This part I wont go into too much detail, as I have had various partial re-assemblies and also really early stages of guides that were far from finished. I think the recent experiences of other community members would give a better representation as their experience is more real than mine. Overall it is a bit of a lengthy build and experience with the printer definitely plays a large factor in terms of speed of assembly, so for me it was relatively easy, but some steps were still tedious (my damn X belt slipped out 3 times when tensioning it!). Based on recent feedback, I guess build time is around 5-9 hours depending on skill (with some major outliers both ways).

Calibration: This is something that had drastically improved over time and early firmware versions had way more step-by-step phases and a bit more manual. I've been chatting with our devs about current feedback and experience and we are working on trying to simplify it even further, though I think other than the nozzle wiper, it's in a good space.

First prints: It just worked. I basically dived right into color printing from the start. Sure, there were some smaller quality issues, but these were primarily profile problems as far as I could tell and the toolchanges were flawless.

Fun first print and still on my desk. Lots of memes about this on Discord especially

I also had one of my first (and few) issues here already, a frozen display during printing. The print finished without issue, so I reported it but didn't think too much of it. I ran into this problem several times, but in the last month or so, haven't seen it at all until we started shipping. There was one other person recently with this issue, but he had much worse luck due to a full bucket warning at the time blocking the print. Devs are working on this though and hopefully should be fixed pretty fast.

Some stringing on purple. The filament we have is generally not stored well so most likely due to moisture

Stringing is something I see from time to time, but it's generally from a specific filament. Filament quality and moisture control are particularly important with the INDX right now.

Truest test of INDX power, 8 color flexi dragon

I had a failure on this print, where the toolhead fell off during nozzle wiping. This would have been due to a bad pickup of the toolhead. In this case, I could just remound and attempt it again. I had this happen again in a more complex way on a print right after.

Bit of stringing, but this was specifically on the light brown color and the one blue (mostly on the inside)

While printing this globe from a community member, I had a weird toolhead crash that I came to in the morning that confused me quite a bit. I can't recall the specifics, but it was something like tool 1 being mounted, tool 2 was hanging off the dock, and it was trying to pick up tool 4 😄 I had to get creative here to save the print, and ended up physically swapping the tools around, moving 4 to 1 and purging some extra material, doing a bit of a swap. This was a really isolated and unique case for me, and this was also the last major issue I have run into on the printer. I regret to say I couldn't find this picture as it was quite interesting.

https://preview.redd.it/c3394h7tx5bh1.png?width=1097&format=png&auto=webp&s=d1a878141c6fbf1bf6810de8c335a0ed504c8347

Torture toaster (prepared by a community member, thanks!). Some smaller imperfections, but you can see the stringing on the same brown from the print before. Worked well.

Filament runout testing. Worked even better than I expected except for one small dot that I can't really explain (came off easily)

At this point I also tried to do some TPU mixing by porting some profiles myself, but my results were not good with a couple of the spools (2 out of 4 had the filament tangle). Personally I think the retractions were quite rough and that was resulting in the filament coiling and getting pushed out of the tools sometimes. TPU will require some patience and heavy profile tuning to lock in, but I believe the hardware is fully capable once the settings match the elasticity.

Small defect on one \"fin\" here, but otherwise removing the supports with 0 contact distance was no issue, basically pealed off the bed.

PETG with PLA supports. I got the model from a colleague but personally I think it isn't set up well at all. It printed extremely well other than the one small edge here. I would do some more printing in this line, just didn't have any good inspiration on what to do.

I have otherwise done some PETG printing as well as PC and PCCF with no issue, but for that exact same reason I didn't think to take any pictures as they were single color (PETG I think could use some fine-tuning on the pressure advance).

Fan shroud was printed in PC Jet Black on INDX

At this point I also started skipping the more interesting high end material challenges as I wanted to help out with some prints for our content team, as well as doing some silly projects like adding an edoscope camera to the fan shroud to view the nozzle. I will add the files to Printables once I clean it up as I am very far from an efficient designer, and I would be happy if someone more capable devolped something cooler from that. It's fun to see the tool changes and nozzle cleaning this way!

https://preview.redd.it/gejhqspjd7bh1.png?width=1287&format=png&auto=webp&s=a5d3a102e2fc7a103e75a4ea196343de129667da

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So what's my opinion?

I've never been a fan of multi-color printing, even though I have never had any issues with it. My prints have always been functional and to the point. With the INDX however, I would catch myself canceling home office shifts just to go to work to start another silly print, and I have been having an absolute blast with it. I don't think I've enjoyed printing this much since my first days with an MK3. Combining this with interesting tools like ColorMix and and the shading app, there is always a queue of models that I want to print. Heck, I think I might go into the office on Sunday to start something up quick. I did just get a stack of CMYKW filament from polymers... Sorry honey, I'll also have to go in during the public holiday on Monday.

In regards to issues: Other than me directly messing the print up such as doing my own dumb profiles for example, I am probably at around 30 000 tool changes right now since the last problem that I had listed with the globe print, and that was also on older hardware. In total I would say I'm at about 50-70 thousand changes (I wish I tracked it) with just the problems that I had listed here. Maybe I am lucky, but the printer has been great for me.

I need more exposure to multi material printing myself to give proper feedback there, but as long as individual profiles work, I see no reason why the combination would cause a problem.

-------------------------------------------

4T or 8T?

More is always better, but I would personally be fine with just 4 tools right now, but I believe 3d models will evolve alongside the tech and I would want to upgrade to 8 at some point in the near future anyway. You don't need 8, but it's nice to have.

The bad?

Like many others, I'm not the biggest fan of the waste bucket. I've done prints that are over 7000 tool changes and would have to empty it throughout the print. Good news, we already have a BIG solution in the works, and if all goes to plan, it will be DIY. I'll keep you all updated on that.

Filament profiles, temperatures and humidity are currently very sensitive. You want to have dry material to prevent stringing, and there's still a lot to be done with the profiles, but these should be streaming in and I'm also curious to see what the community does in the meantime.

Right now I would HIGHLY encourage the use of Prusament and keeping the spools relatively fresh, but it will get simpler in the coming weeks.
• If you are in the USA, you can get it from Printed Solid with free shipping from 50 USD. I'm 95% sure Jessie filament should also be fine as they are basically manufactured near the same as Prusament now, but I don't have any personal experience on the INDX itself. Please let me know if you do try it!

If you have other materials that are working extremely well for you right now, also please let us know in the comments so that

Bonus picture: Bird

https://preview.redd.it/3ceyojg8b7bh1.png?width=610&format=png&auto=webp&s=1166e7891a54cc8886381b8f7ba11ec7e8a8e5bd

I would also like to give a small shoutout to any of our developers and members from Bondtech readings this. They have been amazingly receptive to feedback and are clearly fully committed to making the product as great as possible. It's been a blast working with you all.

Hey everyone!

I know a lot of INDX printers will be arriving in the coming days and lots of assembly going on now, so I prepared a simple video about the selftest and initial calibration

https://www.youtube.com/watch?v=lFK5eWgVNJc

I hope it helps, and if you like this type of content, please let me know (as well as with suggestions) and we could prepare some more in the future.

Happy printing!
(and please share your prints!)

Final release containing ColorMix feature and several INDX-related tweaks.

GitHub release page: https://github.com/prusa3d/PrusaSlicer/releases

Take note that INDX profiles are not bundled with this, and will need to be updated via Configuration -> Configuration Wizard once available (should be tomorrow)

It's a small update systematically, so I don't expect many issues, but if there are feel free to comment.

https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.5.7

Summary

• New features and improvements
  • Improved filament change between different materials
• Fixes
  • Support for older xBuddy board versions
  • Fixed input shaper calibration for CoreXY printers
  • Fixed not loading custom Connect certificates
  • Fixed a crash when printing more than 1024 objects

This is the update that was recently briefly upped and removed, with the fix for the previous issue implemented. It's not a huge update, but as usual, if there are any problems with it, please let me know here so that I can relay it to the team

Our May Print of the Month contest hit big! It's always a pleasure to see what the community is working on and printing. We're changing things up a bit, so join in too for the chance to enter the raffle to win a Prusa Backpack by Braasi, as well as 3x 1050 Prusameters for selected top entries!

https://preview.redd.it/9vlg75yweg5h1.png?width=1500&format=png&auto=webp&s=c80e663209ea43f5952d0f70cdf912171f69d833

We’re cruising into the June 2026 round with plenty of sunshine! This month’s special theme is: Summer Staples & Travel Gear. As vacation season kicks into high gear, show us your prints designed for travel, backyard BBQs, beach days, or summer organization. Just remember to pack the PETG or ASA if your prints are going to be sitting in a hot car or baking in the sun!

Raffle Winner

Our raffle winner for the May MK4S kit is: u/EaglerCore ! Congratulations, and I've sent you a DM with more information! Be sure to join us on Discord/YouTube for the stream each month to join in on the fun (not required to win).

May Prusameter Winners

Here are the three featured winners from May:

• u/ResonantRuminant - A 3x Scale Replica of the Curta Calculator
  • I watched the video. I read some more about it. I still don't uderstand it. I guess it's time to print it as the next step. Amazing model of a manual calculator
• u/michalgerhat - A quick fix for a peculiar problem
  • Prints don't always have to be flashy, and having that perfect practical application is often times just as great, or even better. In this case, a simple bluetooth controller was converted to a watch to make this runners half-marathon just a bit more bearable
• u/The_Printing_Pilot - I've 3d printed a guitar hero style controller
  • Nostalgia kicks in hard with this one, especially for someone like me who lacks the talent for real musical instruments! A fun, but clean and neat controller body for a project called Polybar.

Special theme (350p) winner: u/bubblewrap3000 - Chopstick connector plant trellis - Thanks for adding the modular version too, a nice addition to any growing garden.

The winners will receive their Prusameters within a week.

How to Participate

If you haven’t joined before, here’s a quick reminder of how it works:

• Create a post with your print (anything you have printed on a Prusa3D printer).
• Add the flair: “Print of the Month”.
• Credit the model and its author.
• Include your Printables handle so we can send you Prusameters if you win.
• Designer Exception: Don't have a 3D printer? If you have a project on Printables, link one of the MAKES of it. This needs to be a real print done by someone and submitted as a make, and the model must be hosted on your own Printables account.

Rules

• We’ll go through all the prints at the end of the month and announce the winners at the start of the next one.
• Only a single entry counts for the raffle per Printables/Reddit account, but we encourage you to share as many prints as you like.
• Raffle Eligibility: Accounts must be 1+ month old and posts must have at least 10 upvotes. Exceptions are possible for high-quality posts from new users.
• Extremely low-effort or duplicate/spam posts may be removed and disqualified at the moderator's discretion.
• The entries are counted from the 1st of the month to the last day of the month, so no entry is missed
• The raffle draw is done on the monthly community live stream, on the first Thursday of every month (stream starting at 19:00 GMT+1, lasting about 2 hours). It's not required to be online to win.

If you enjoy this kind of contest, we’ll keep going with new themes every month. The winning photos might also appear on our other social media channels to show off what our Reddit community can do. We're looking forward to seeing your prints!

We just released Prusa ColorMix 🌈 a new feature in PrusaSlicer 2.9.6 and EasyPrint that allows you to combine your loaded filaments into new colors.

ColorMix in new EasyPrint: https://www.printables.com/slice
ColorMix in PrusaSlicer: https://github.com/prusa3d/PrusaSlicer/releases
Our new precise ColorMix model licensed under MIT: https://prusa3d.github.io/prusa-fdm-mixer/
The new OpenPrintTag Material Database: https://database.openprinttag.org/brands

Read more about it here: https://blog.prusa3d.com/our-new-open-source-colormix-model-in-prusaslicer-and-easyprint_136079/

Huge thanks to the community team that brought so much attention to the feature: u/ratdoux, u/justinh-rabh under https://github.com/justinh-rahb, as well as u/wombley for their filament-mixer library and u/huntercook for his work on the peggypalette.

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Feel free to ask if you might have any questions, and to report any issues you might run into with it here

Edit: Added links for convenience

Can't forget about our older printers when trying new features

May Print of the Month

Our April Print of the Month contest hit big with the largest amount of posts to date! It's always a pleasure to see what the community is working on and printing. Join in too for the chance to join the raffle to win an Original Prusa MK4S kit, as well as 3x 1050 Prusameters, for selected top entries!

We’re blooming into the May 2026 round with a breath of fresh air! This month’s special theme is: The Great Outdoors & Garden Growth. As the weather warms up, show us your prints designed to thrive outside. We’re looking for clever gardening aids, patio upgrades, bird feeders, or gear for your favorite outdoor hobbies like hiking or cycling. Just watch out for PLA, it doesn't like the sun!

Raffle Winner

Our raffle winner for the March MK4S kit is: u/ResonantRuminant ! Congratulations! Be sure to join us on discord/youtube when we do the raffle winner live at the start of each month.

April Prusameter Winners

Here are the three winners from March:

• u/TheDarkHood - Prusa Core One Gantry Primer
  • Priming off the bed while maintaining nozzle pressure? That's some genius work here!
• u/philip-soerensen - EdgeCase
  • A non-invasive, recirculating, internal HEPA and carbon filter for the Prusa Core One
• u/renze - Automated curtain system
  • After the company went bankrupt and unable to source spare parts, Renze went ahead and made his own!
  • This also wins the special theme award for sustainability, nicely padding the points a bit!

The winners will receive their Prusameters later this week.

How to Participate

If you haven’t joined before, here’s a quick reminder of how it works:

1. Create a post with your print (anything you have printed on a Prusa3D printer).
2. Add the flair: “Print of the Month”.
3. Credit the model and its author.
4. Include your Printables handle so we can send you Prusameters if you win.
5. New: Don't have a 3D printer? If you have a project on printables, link one of the MAKES of it. This needs to be a real print done by someone and submitted as a make, and the model should be on your own printables account.

Rules

• We’ll go through all the prints at the end of the month and announce the winners at the start of the next one.
• Only a single entry counts for the raffle per Printables/Reddit account, but we encourage you to share as many prints as you like
• Raffle Eligibility: Accounts must be 1+ month old and posts must have at least 10 upvotes. Exceptions are possible for high-quality new users.
• Extremely low effort or duplicate/spam posts may be removed and disqualified at the moderator's discretion.

If you enjoy this kind of contest, we’ll keep going with new themes every month. The winning photos might also appear on our other social media to show off what our Reddit community can do. We're looking forward to seeing your prints!

Edit: Fixed links. They just refuse to be fixed, I give up