Core One L- First print- No filament coming out - Hardware, firmware and software help https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/ Prusa3D Forum Discussion Board en-US Tue, 09 Jun 2026 14:50:14 +0000 wpForo 60 RE: Core One L- First print- No filament coming out https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781237 Sat, 07 Feb 2026 20:04:00 +0000  

Posted by: @djh-117

Yea, im printing with the PLA filament that came with it. 

More information please. So when you load the filament and it is doing a purge, do you see any filament coming out of the nozzle? Also is the nozzle correctly pushed up into the heatsink and are the thumbscrews tight?

]]> Hardware, firmware and software help hyiger https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781237 RE: Core One L- First print- No filament coming out https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781219 Sat, 07 Feb 2026 16:20:42 +0000 Yea, im printing with the PLA filament that came with it. 

]]> Hardware, firmware and software help Djh 117 https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781219 RE: Core One L- First print- No filament coming out https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781218 Sat, 07 Feb 2026 16:16:04 +0000  

Posted by: @djh-117

Hi everyone, I’m new to the forum and just recently received my Prusa CORE One L. I completed the setup and configuration, and everything seemed to go smoothly. However, when I started the test prints, each one never extruded any filament. The prints would get to 30% completion but nothing was coming out of the nozzle, and there was no material on the print bed. This has happened with three different test prints, and I’m not sure what I might be doing wrong. I’m hoping someone here can point me in the right direction. Thanks in advance for any help!

Are you printing PLA? It's possible you are getting a nozzle clog but it's only a guess. Best as @diem pointed out is to contact support. 

]]> Hardware, firmware and software help hyiger https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781218 https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781216 Sat, 07 Feb 2026 16:03:16 +0000 For all problems with new machines and new built kits the best resource is Prusa Support via chat;  you will need your machine's serial number.

Cheerio,

]]> Hardware, firmware and software help Diem https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781216 Core One L- First print- No filament coming out https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781213 Sat, 07 Feb 2026 15:00:31 +0000 Hi everyone, I’m new to the forum and just recently received my Prusa CORE One L. I completed the setup and configuration, and everything seemed to go smoothly. However, when I started the test prints, each one never extruded any filament. The prints would get to 30% completion but nothing was coming out of the nozzle, and there was no material on the print bed. This has happened with three different test prints, and I’m not sure what I might be doing wrong. I’m hoping someone here can point me in the right direction. Thanks in advance for any help!

]]> Hardware, firmware and software help Djh 117 https://forum.prusa3d.com/forum/prusa-core-one-l-hardware-firmware-and-software-help/core-one-l-first-print-no-filament-coming-out/#post-781213