Using MK4 nozzles with MK4S possible? - User mods - OctoPrint, Enclosure, Nozzles, ... https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/ Prusa3D Forum Discussion Board en-US Tue, 16 Jun 2026 05:57:41 +0000 wpForo 60 RE: Using MK4 nozzles with MK4S possible? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718813 Tue, 13 Aug 2024 23:17:34 +0000 Prusa has traditionally been very good supporting such downward compatibility so it's safe to assume that old nozzles will be supported

]]> User mods - OctoPrint, Enclosure, Nozzles, ... FoxRun3D https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718813 RE: Using MK4 nozzles with MK4S possible? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718769 Tue, 13 Aug 2024 16:49:59 +0000 In the config Wizzard, concerning the MK4s we can see that there is profile for the HF nozzles but also regular .4 nozzles, so yeah pretty sure that the printer will be compatible with "old" nozzles

]]> User mods - OctoPrint, Enclosure, Nozzles, ... Woody https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718769 RE: Using MK4 nozzles with MK4S possible? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718738 Tue, 13 Aug 2024 13:00:15 +0000 From what I saw in several videos, the outer dimensions of the nozzles are the same. The changes in the HF nozzles are inside the nozzle. Also no mention of a change in the heater block. So I think it is safe to assume that we will still be able to use our "old" MK4 nozzles. The difference in the flow rate will probably be handled via different "HF" (or whatever they will be called) profiles for the new nozzles.

]]> User mods - OctoPrint, Enclosure, Nozzles, ... Walter Layher https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718738 Using MK4 nozzles with MK4S possible? https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718737 Tue, 13 Aug 2024 12:42:53 +0000 Since the MK4S is now available and the MK4 to MK4S upgrade kit will be released soon, I still have some MK4 nozzles left as a MK4 user.

Can I still use the MK4 nozzles with the MK4S, or will I need to dispose of them?

]]> User mods - OctoPrint, Enclosure, Nozzles, ... Mr.B https://forum.prusa3d.com/forum/english-forum-original-prusa-i3-mk4s-user-mods/using-mk4-nozzles-with-mk4s-possible/#post-718737