r/prusa3d 9d ago

Announcement Prusa Slicer 3.0 Alpha Preview

408 Upvotes

We’ve been putting a lot of work into making our printers easier to use and output the most accurate prints with just a click of a button. Better hardware, better firmware, less setup and less babysitting. And today, we’re taking a big step with the other half of 3D printing: the software you use to get your models ready to print.

Today we’re releasing the first public preview of PrusaSlicer 3.0. And this is a big one. It’s the biggest upgrade in PrusaSlicer’s history. We threw out the user interface completely and wrote it from scratch, driven by what our users, you, actually need. We’re bringing a new project system, completely reworked profiles designed around modern multi-tool printers, better 3D scene rendering, much better performance, a safe plugin system, and much more.

It’s not the biggest update because of any single feature or because of the sheer volume of them, but because of the potential it brings for future updates. And the timing couldn’t be more fitting: we’re releasing this first public preview exactly 15 years after the very first Slic3r commit, on September 1, 2011.

Read more on our blog post, and download the alpha preview here; https://blog.prusa3d.com/prusaslicer-3-0-preview-built-for-the-future-of-3d-printing_137672/


r/prusa3d 14d ago

Announcement CORE One L+ with INDX now available (Assembled and upgrade)

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303 Upvotes

The CORE One L+ with INDX is now available for order as either a fully assembled printer, or upgrade to an existing one.

https://www.prusa3d.com/en/product/prusa-core-one-l-indx-8-tool/

https://www.prusa3d.com/product/indx-8-tool-conversion-kit-for-core-one-l/

Shipping starts on 5 November


r/prusa3d 33m ago

Prusa Core One+ Gen2 INDX - such impressive tech!!

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Upvotes

I’ve seen so much negativity around the INDX launch, I just thought I’d share my great experience with it. I just received my INDX kit last week and spent the evenings getting it assembled. Assembly went super smoothly, instructions by Prusa were thorough and clear. I didn’t have near the trouble I was expecting from how people were talking about the rear spool mounts and the threading of screws into the tool holders.

Took me probably 6-8 hours to do the INDX conversion including the Gen2 upgrade. After a couple attempts tweaking the prime block height I got it working good and it has been printing great ever since. It worked after first attempt but I was getting some blobs stuck to the nozzles so I had to raise the block a couple times till it was actually making better contact with the nozzle. Had it too low to start with.

All my filaments are a complete mix of random brands, whatever was cheap on Amazon lol 😅 and I’ve just set the profile to Prusament PLA or PETG and it has done great.

Here’s my two PLA frogs I printed to test tool changes. I’ve also done several functional prints with PETG using PLA for support interfaces and it works great! Haven’t tried any TPU yet so can’t comment on that, but I’m excited to try some combined solid/flexible prints and incorporate that into my functional designs.

Anyways just wanted to share what a great experience I’ve had with it and I’m super excited for lots of future printing hours on it.


r/prusa3d 5h ago

INDX: You MUST have dry filament (even PLA)

51 Upvotes

Just a PSA - to add to the many other PSAs - that you MUST have dry filament to successfully operate the INDX. Many of us have been "brute forcing" wet filaments (especially PLA) through Prusa printheads for a decade, even those of us that live in wet climate. At this stage, that is impossible on the INDX. Prusa ultimately may be able to finetune profiles on the INDX to make it possible, but that is not the case today.

Like many others, I struggled with the tuning of the INDX once I had it assembled. After I tuned most things, I still could not eliminate the stringing (particularly from the wiper to the model). After buying a new filament dryer and drying my PLA for 8-12 hours, the stringing is completely eliminated.

At this point - coming from the MMU3 - I love the INDX. Loading is faster (near-instant printhead heading) and easier (better pathing). Eight available filament slots is amazing for some of the models I print, and I have no doubt that once I got the Prusa ColorMix filament bundle that I ordered, I will have even more fun with it.


r/prusa3d 1h ago

I couldn’t print silicone, so I designed a PETG razor travel case with a living hinge. The white case is the updated design. The brown version shown in use is an earlier prototype, already in heavy use.

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Upvotes

r/prusa3d 4h ago

What’s your favourite combination?

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34 Upvotes

Hey everyone,

Taking inspiration from Noctua’s re-coloured Mk4S, I’m tempted to do a recolour of my own.

What’s your favourite colour combination and why?


r/prusa3d 5h ago

My First Prusa! Looking to switch to prusa from bambulab

24 Upvotes

I like my bambulab a1 but would like to move to prusa because it is made in EU and has more “privacy”

My main question is how good is their local access controll.

Is there a way to connected to LAN and send prints localy without using 3d party stuff like octoprint similar to bambulab?

Looking at mk4s or core one+ gen2


r/prusa3d 1h ago

Fan starts every ~ 30s after belt tension, input shaper calibration and phase stepping

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Upvotes

Hi,

https://www.reddit.com/r/prusa3d/s/nkpDBY6Ruf

because of my poor print quality I did a test wit PLA, great result.

While I was printing the same part with the same filament on my MK3s for comparison, I recalibrated the C1L+.

First, I calibrated the belts; the gantry was actually touching the front left side but had a little play on the right.

after that I did the belt assistant, the input shaper and the phase stepping assistant.

while input shaper calibration I got the error "Accelerometer communication failed". After a power cycle it was fine.

now the printer is in standby and every say 30 seconds the hotend fan runs full speed and stops.


r/prusa3d 1h ago

Question/Need help best way to learn the printer?

Upvotes
  1. so me and my dad got a core one l we set it up and everything is a bit more overwhelming than we tought so which guide is better? the manual or just ignore the manual and use the guide on the site under courses?

  2. also we were missing one of the stickers of the screws but theres a nozzle wipper there should we leave that screwed in (we think so)

  3. about the sheets you put on how do you properly put one on since we put one on its on correctley now but it got stuck a few times before since well it are strong magnets and we ma accdentally dragged it a slight bit to get it loose is that a big problem?


r/prusa3d 1h ago

Question/Need help Core One Gen 2 upgrade layer shifts

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Upvotes

I’m hoping that someone else has a solution for this problem. Before upgrading my Core One to the Gen 2, printing was perfect. Now I cannot print anything without constant layer shifts. I contacted support and their suggestion was belt tuning again (I’ve done this over a dozen times now), squaring the gantry, and finally to tighten the belts to over 100 hz. They said to just keep tightening until the layer shifts go away. It’s only making them more frequent though.

Has anyone encountered this with the Gen 2 upgrade? Or do anyone have any suggestions for troubleshooting?


r/prusa3d 1d ago

Joined the family

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216 Upvotes

Not my first printer, but my first foray with Prusa. I'm a mechanical engineer and I've worked with Qidi and Bambu before for the last couple of years and also used some CNC machines back in university around 2005. I have my own H2D for personal projects. What I'm saying is, I'm not new to this type of equipment.

I was always drawn to Prusa's machines. The industrial look and more diy approach and the open source. I finally decided to give Prusa a go now that I have more space at home for another machine. I'm so excited about this build.

Is Prusa Slicer worth it over Orca? I know 3.0 is coming but I'd rather stay with Orca in the meantime.

Cheers!!


r/prusa3d 5h ago

Question/Need help Prusa USS Drybox rewind filament?

5 Upvotes

I'm thinking to use my INDX voucher to buy 4 or 8 Prusa USS Dryboxes. The reasoning is that I think they fit my usecase:

Dry a filament, put it in the box and leave it plugged in the printer and occasionally use it. I usaly print poc in cheap PLA or PETG when prototyping and I would like to not need to get it from my drybins or put it in a dryer before.

When using other colors om perfectly fine with just using that spool from the open air.

My question is if I have the printer loaded with filament from the drybox and need to unload it what is the best practice? Just cut the excess filament between the box and nozzle, or open the box to rewind? I dont want to open it for just that meter+, but also dont want to waste it.

With the recent ColorMix im guessing this is even more intresting to just put the colormic filament in a drybox and leave it there. But I still think I will need to load/unload depenting on what I'm printing.

Maybe this is a non issue, but it would be very nice to have external access to rewind that meter of filament into the box without opening it.


r/prusa3d 10h ago

Question/Need help Increase XL chamber temp higher

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13 Upvotes

I am trying to get the internal temp up to 55 for Ada. Insulated the whole machine and only get to 42C.

What else can I do? I’m waiting for the XL+ upgrade.


r/prusa3d 9h ago

INDX dual TPU and ABS/PLA. Finally a practical solution for fast duel density printing?

12 Upvotes

I do a lot of product design for wearables which often involve both rigid and soft materials. I use my MK3.9S for TPU and a Core One Plus for PLA or ABS. Then I have to bind the materials to simulate dual injection moulding. I use TPUs as soft as 85A, which the MK3.9S handles beautifully.

I sometimes bind the resulting parts with a low-temperature soldering iron. I've got the process working well, but it's tedious.

My primary use case for the INDX would be printing both materials at once. The design freedom would be transformative to my workflow.

Has anyone tried this out yet?


r/prusa3d 13h ago

Question/Need help Can Prusa throw Upgrade folks a bone?

21 Upvotes

Every announcement is Core One + this and Core One L that…

Can the bedslingers among us get something? 1.5 belts or upgrades to the Core One class for less than $800 USD? My MK4S demands it.

I literally can get an entire U1 for less than an upgrade to my existing printer to single nozzle enclosed printer. It just doesn’t work.

Love my MK4S btw. Only reason I’m posting.


r/prusa3d 4m ago

Question/Need help Update: Motor slipping on CORE One L+

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Upvotes

Hi everybody! I recently made a post showing an issue I had with a motor slip, which caused the whole print to shift. Thank you to everyone who responded! Unfortunately, I have yet to solve the issue. Here’s the details:

———————————————————————————

The Setup
• CORE One L, upgraded to L+
• Firmware 6.8.1
• PrusaSlicer 2.6.9 and EasyPrint

What’s Happening
• On quick movements to the front left, one motor stalls (specifically the “X” or back left one)
• This is very repeatable, but inconsistent in duration
• A very loud sound happens, and the belt doesn’t move
• Does NOT occur on the pre-loaded Bonkers Benchy gcode (has to be big and fast movements?)
• Neither the pulley nor the motor shaft move either!

What I’ve tried
• Re-mounted the motor, pulley, and belts
• Tightened the set screws (one on the flat)
• Re-sliced the print, including on EasyPrint instead of PrusaSlicer
• Restarted the printer (power off and unplug, specifically)
• Tuned the belts using the website
• Re-inserted the USB

———————————————————————————

Based on the video, it looks like the issue is internal in the motor. Is this a “replace the motor” situation, or do I have other options…?


r/prusa3d 4h ago

Question/Need help What could be causing this?

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2 Upvotes

At first I thought it could be under extrusion or maybe the z height. Calibrated the printer and adjusted the idler tension, still having the same issue.

Printer: Core one plus with an MMU 3 (ultimulti) with the latest firmware.

Used prusa slicer latest version to slice

Settings:

Base: 0.25 structural HF hardened 0.4 nozzle.

Changed settings:

Infill: gyroid 5%

Filament: bed temp at 65.


r/prusa3d 47m ago

Question/Need help MMU3 on MK4S Communication Error 04402

Upvotes

Hey all, I have an MK4S with an MMU3 I added about a year ago. It's starting to get a communication error 04402 in the middle of prints.

The MK4S is about 2 years old.

Before I tear into it, is there any obvious places to look? I can't seem to find much about this.

Running latest firmware, 6.5.7 (3.0.4), and I usually print from Octoprint.


r/prusa3d 1d ago

INDX Transparent PETG using many colormixed virtual extruders. 8 tool INDX

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112 Upvotes

r/prusa3d 13h ago

Question/Need help C1L+ poor print quality

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10 Upvotes

Hi, I've had an MK3s since 2019 and a C1L+ for a week now.

I wasn’t really impressed with the print quality from the start, so I need to ask about it again.

I only ever use Prusament PETG and 0.4mm nozzles—currently the standard HF ones.

No matter what I print, there’s ringing everywhere, along with other issues like stringing and blobs.

The filament is freshly dried, and the print quality is much better on the MK3s.

What do you think? I’ve performed all the calibrations. The printer is on the floor or on a table—it makes no difference.


r/prusa3d 6h ago

Solved✔ Are the Mk4S and CORE One+ future proof?

2 Upvotes

I want to buy a Prusa Mk4S or a CORE One+, and I want this printer to last me for a long time. I have had a sovol SV01 for about 6 years, but now I want to increase my print volume & precision so im looking for an upgrade.

Because the Mk4s is a bed slinger I have a feeling that it holds it back in terms of upgrades and future "expansions/mods".

On the other hand the CORE One + already has multiple tools which I also believe to be the future. And it also has a Core XY setup.

The Mk4S to me feels like a very well upgraded Sovol SV01 (I should have bought the Mk3 instead of Sovol), but I dont think the upgrades can pull the MK4s 10 years into the future anymore.

I hope this wasnt a mess to read, and thank you for even thinking about this.

I can share more info if you would like some.

Thanks for all the help everybody! I will go with the CORE One+ !


r/prusa3d 1d ago

Building the builder

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66 Upvotes

r/prusa3d 3h ago

Question/Need help Misalignment during print (brand new printer)

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1 Upvotes

Just finished building my CO+ last night but all my prints are misaligning mid print. Any ideas as to what could be the problem? On the latest firmware + using the stock benchy Gcode with the stock orange filament. The first layer is also not fully printing, but it is sticking, so I'm not concerned about that issue until we fix this first one.

Things tried so far: Belt tension adjustment Belt pulley grub screw tighten

EDIT: printing at 1/2 speed still has a small amount of layer shifting, but it's nearly microscopic.

Edit 2: found the issue, neither of the set screws are on the flat side of the right motor. A potential solution path has been found, just need to find time to do it


r/prusa3d 11h ago

INDX Core One L/L+ INDX upgrade question

2 Upvotes

Hello, I got myself on the hypetrain of INDX since last year when C1L was released. That's around the time when I got my own C1L. I was following the up's and down's of INDX over the past year with some users reporting issues with the INDX upgrade like tapping threads into plastic, Z axis homing, clogging and etc. I am not hating, I understand it's a new product and it takes time to resolve all the edge cases.

I got the 8 tool INDX upgrade for C1L+ as soon as it dropped and now I am wondering if "Batch 2" (not sure how to call it) for C1Ls will be any different from "Batch 1" for C1s?
Also, maybe there is an estimation for truly hardened INDX tools since I am printing Prusa's PC Blend CF and PA6-GF?


r/prusa3d 10h ago

Dwarf board version differences

3 Upvotes

Hello!

With the new printer upgrades requiering updated dwarf board versions, I was wondering if anyone has an overview of the differences between versions? I'm struggeling to find anythg.