Prusa3D Forum - Recent Topics

Prusa Slicer Pyhsical Printer and UN/PW

RCarnaroli — Thu, 07 May 2026 01:12:36 +0000

So I just got my C1L and I noticed every time I opened P Slicer and went to view the printer, I had to re-enter the UN/PW in whatever browser it's spawning. Iplayed around a little and looked in the forums. I didn't find exactly my issue. So in case anyone else comes across this, I fixed it by putting the UN and PW in the URL in Slicer. So maker:longrandompassword@the_ip_on_your_network. I left the username and password in the config too. But I think it's not using them.

6.4.1 Firmware quirk

JH — Wed, 06 May 2026 22:23:00 +0000

I've noticed that if I stop a print, the head moves away and crashes into the left side. Upon starting a new print after the stop event the head attempts to home being already against the side and stresses the motor/belts. I think it would be nice if a print is stopped/ended the head would park and stop in a place that would cause mechanical stresses if a new print is started with reset or powering off the machine first

Metallic Screech/Rattle with travel moves

Jason3D — Wed, 06 May 2026 19:35:14 +0000

So my Core One L is making a metallic screech/rattle noise, it only appears when doing travel moves. I've redone belt Tension, input shapers and phase stepping, but no luck unfortunately. Does anyone have ideas on what to try?

Would anyone be interested in streamdeck plugin that connects to prusalink?

Enspiron — Wed, 06 May 2026 19:13:43 +0000

Hello there!

I created a stream deck plugin that uses PrusaLink's api to connect to the printer using just the printer's authentication like local ip, user, and password.

It lets you monitor your print progress, hot end + heatbed temps and more.

I borrowed some assets the git but other than that I have done the rest.

Would you be fine with a price of $5 for the development of integrating the API into the stream deck plugin and making it look nice? Let me know so I can gauge the response!

Prusament PETG Organic supports issues

Katakana54 — Wed, 06 May 2026 18:08:30 +0000

Whenever I try to print organic supports with Prusament PETG (2 different spools, one brand new) and I get the result below.

This is with double walls and support speed set to 75 from original 120 mm/s.

Typically no other issues in my prints, just this very annoying blocker - any ideas?

What is printed out and how it looked in slicer differ. Buggy gcode? Who can help to debug gcode?

visi — Wed, 06 May 2026 14:51:14 +0000

Hi there!

I am a bit new here and trying to solve my first bigger looking issue of my CoreOne+ printer. I have downloaded an stl plan and sliced it with the PrusaSlicer 2.9.4 under linux. I have edited the PETG material to have the temperature that was given by the manufacturer of material (230-250 nozzle -> 240, and 70-80 bed -> 70). I have also changed some default settings like use support and use the organic type but have not edited any "expert" values - like retract speed or distance etc.

The slicer gave me screen where the end-result looked OK for me, so I have saved the gcode to USB and started printing. Since, it took longer than 1h, I went for my daily walk... When I was back I have noticed that the end-result looked quite different. There are several layers where there is an added slope or hole that was not on the screen on the slicer. My question is, who can help to "debug" the created gcode file? When I load again to the Slicer it still looks normal, so I guess the generation is perhaps buggy???

(BTW: The Pruse help page for the slicer gave me 404 -> https://help.prusa3d.com/product/prusaslicer - Does anybody know how to contact them?)

Please see added some pictures about the slicer screen as well as the printed out result + the code zipped.

MMU2 Firmware gone?

Viktoras Lukšta — Wed, 06 May 2026 14:27:23 +0000

Hello Prusa Support Team,

I’m currently setting up my Prusa i3 MK3S with MMU2S, and I’ve run into an issue locating the correct firmware on your website.

It appears that the MMU2S firmware is either missing or very difficult to find. When navigating through the standard downloads pages for the MK3S and MMU2S, I couldn’t find a clear or direct download for the combined firmware package (MK3S + MMU2S), nor clear instructions on where to obtain the correct versions.

Could you help me?

Thanks!

Prusaslicer ignore my pause

Simset — Wed, 06 May 2026 09:38:51 +0000

Hello everybody,

I'm currently experiencing a very strange problem with Prusaslicer.
Last week, I prepared a box to print on my PrusaXL. I added a pause during print to add some nuts.
There was no problem with that.

Today, I tried to do the same with another version of this box. When I go to the proper layer and right clic on the "add pause" button, I validate the default pause message. But the pause indicator (the cross right to the layer) d'ont appear anymore. Even after regenerating the G-code.

I tried to re-install PrusaSlicer but the problem is still here.

Thank you.

USB Port Overcurrent

Benymo — Wed, 06 May 2026 09:19:34 +0000

Hello,

I am having issue with Prusa XL with 5 Toolheads. When the printer is turned on, it resets during the loading and throws and error "USB Port Overcurrent #17306". This has been happening for quite some time now and I am waiting on update from Prusa Support.

This issue first occured shortly after a ruined print covered one of the toolheads in blob of filament. While cleaning the mess, the thermistor of the toolhead got damaged and it was replaced. But I am not sure if this is relevant to the issue.

What I have tried so far:

Turn printer on with disconnected toolhead where thermistor was replaced.
Turn printer on with all toolheads disconnected
Swapping display from Core One L and MK4s - Still same error when powered on
Testing display from XL on Core One L and MK4s - Display works as expected.
Using different USB drives, powering on with and without USB drive connected.
Bought and replaced LCD cable and Sandwich board (based on suggestion from 24/7 live chat support).

None of these fixes worked and the issue still persists. I am currently waiting on reply from the Prusa Support and will be trying another live chat support session soon. I have not found any damaged cable or components.

I will be glad for any suggestions on how to resolve this issue.

Thanks!

Happy Printing