General discussion, announcements and releases - Prusa3D Forum

Layer shift in Core One

mnentwig — Fri, 10 Apr 2026 17:48:58 +0000

I just had a thought: Layer shifts in Core One are a fairly common problem, usually caused when the nozzle gets mechanically stuck (filament blobs, prints lifting up, overextrusion).

Is the core one too rigid for its own good?

The thought came watching my Voron where the (toolchanger) head can slide upwards on three pins and is held down by magnets.

For testing, I loaded green "dripmaster ultraBlob PETG" (actual brand shall remain unnamed but with a 0.6 mm nozzle you almost get a running stream of molten plastic without extruder at a cozy 250°C. It's that bad).
Of course, it results in Blob-fest all over the wipe tower, as expected. But now, to my surprise, the printer is just plodding through, like nothing happened - obviously, because the head can evade in upwards direction.

Is this a possible design improvement? "OptoTap" is fairly common on the single-head version, suspending the head on a tiny linear rail, having the same effect. Sells for below $10 including the linear rail and electronics, must be a high-volume product ... While intended primarily for sensing (instead of Prusa's load cell) I wonder now whether it has other benefits that make it so popular.

Printables Rewards

iftibashir — Thu, 09 Apr 2026 09:46:11 +0000

Will the rewards over on printables ever be expanded??

At the moment it's nice to be able to get the odd filament (irrespective of the high shipping cost!) but it would be nice for more items to be added - the USS Drybox would be a good start! Also the ability to place an order for several items using vouchers and have everything shipped together. At the moment if I want to order multiple items I have to order my rewards item separate from everything else, thus pay extra shipping for no reason......

Relocating to another continent: How to pack your printers?

GroenieDieDraak — Thu, 09 Apr 2026 06:41:55 +0000

As the title suggests, I will be relocating to another continent in the near future and would like to hear suggestions on how to pack and prepare printers for the move. At this stage I am not sure if they will travel by air or by sea container.

My two MK4S printers and the MMU were kits. I have most of the original boxes and plenty of "after upgrade" spare parts (One was a MK3S in its previous life and the MMU3 was a MMU2).

Should I break them down to nuts and bolts as I received them as kits?

Should I just remove the LCDs and try to "lock" the Nextruder in place and box it up? Ideas on how to do the locking?

How to protect the printers in the boxes from rough moving company handlers if kept assembled? Bubble wrap? Wood cage?

Any advise would be welcome. Thank you in advance for the replies.

BumpMesh -- a really nice online texture editor

Jürgen — Tue, 07 Apr 2026 09:51:51 +0000

Youtuber CNC Kitchen has released a really neat, free online editor which lets you apply textures to STL files. Lots of predefined textures plus the ability to upload your own (as greyscale images); nice control over all relevant parameters (scale, amplitude, 3D mapping onto the object, which surfaces to apply the texture to); pretty responsive online preview; smart STL export (automatically applies a suitable mesh size).

From what I can see, there are no strings attached. Link to the online editor and to CNC Kitchen's demo video below:

https://bumpmesh.com/

https://www.youtube.com/watch?v=rTBkjR7JvzI

Suggestions for a Price - XL and MK4S with enclosure.

cwbullet — Mon, 06 Apr 2026 12:46:52 +0000

I have a friend locally who wants to sell me his Mk4S with the Prusa Enclosure and 5 head XL. They are about 2 years old and lightly used. I am tempted to buy them since I would not have to pay shipping and I could use a couple more.

I see XLs on eBay for $1700-3500 and Mk4S for $350-750. Any thoughts?

Prusa resale prices

Jürgen — Mon, 06 Apr 2026 10:36:52 +0000

As I am looking to sell my lightly used Core One, I notice that the prices are lower than I would have expected. Based on online classified ads in Germany, 950€ seems to be the current consensus on the asking price for a Core One (or Core One+). The offered printers are often significantly less than a year old, and often include some accessories: extra build plates, camera...

If you figure in a bit of bargaining for the actual sales price, that amounts to less than 2/3 of the purchase price, after less than a year of use. Has that been common for Prusa printers, or is the Core One faring particularly badly in this respect?

Forum outages

miroslav.h4 — Tue, 31 Mar 2026 16:57:47 +0000

Hey, I wonder what these constant forum outages mean? Are your system engineers unable to do something about it?

Upcoming Prusa Community live "hang out" stream. April 2nd 2026

Same Old Shane — Mon, 30 Mar 2026 20:29:31 +0000

Hello all;
We will be doing another Prusa community hang out session over on discord.
When; Thursday April 2nd.
19:00 CET
13:00 EST
12:00 PST
03:00 JST (April 3rd)
Where;
Over on the Prusa discord server.
https://discord.gg/yzCUepHZ

Now a few answers up front;

"Why on discord? Why not on youtube?"
Part of the hang out is that we have community members show up in the live stream to show off their projects and discuss it and is a lot easier to have it on discord since it often happens randomly. I am looking at multicasting this session over on youtube and maybe twitch, but for community participation, Discord would be the place.

"How long will you stream for?"
Honestly, no clue.. It is set up with a start time and then go for however long. It could be for an hour to several hours. Just keep things in mind, it might be early in the afternoon for you, but not for others where it could be late at night. We will carry on for as long as wel can, but there is no set limit.

"I want to show off my project"
In the discord server, under the general chat section (for now) leave a message and tag the moderators about joining the session and we can see what we can do to git you in. List the project you are working on, and also please be aware, there is no guarantee that we can get people on. We will do our best, but there could be several situations where its not possible.

Prusa Blog Comments

Sembazuru — Mon, 30 Mar 2026 15:58:21 +0000

The last two blogs seem to have comments turned off although the blog listing still provides a clickable link to leave a comment. But when you go into the blog article and scroll to the bottom (or click the "Leave a Comment" clickable link which does the same), there is no text entry box for entering a comment. I am logged in, and when I check the 3rd blog entry back there are comments and a way to submit a new comment.

Are the blog comments turned off intentionally or accidentally?

Prusa has a real bot problem...

shrap — Fri, 27 Mar 2026 13:05:36 +0000

I am sure they are aware, and I know several of you are as well, but damn it the bots on these forums and on Printables are beyond obnoxious.

How they are allowed to make accounts, I don't know. But they do it. And somehow the back end even knows they are bots because when I get a reply from a bot, I don't get the forum e-mail that says I got a reply. And it's getting harder and harder to tell which ones are bots or not.

Printables is overrun with loading fraudulent models (mislabeled, mis-tagged and even misleading thumbnails), most of which I am convinced are just bots trying to farm Prusameters or something. A model of Mario is not "political" nor is a model of a tree "NSFW". Most of these models have next to no description in their upload and I can say for certain almost none of them are "original".

I really hope they get a handle on this soon. No one wants to be in a circular conversation with a droid.