Core One Nozzle Replacement Tool is incompatible with E3D-nozzles
Yesterday I have received my brand new E3D ObXidian HF nozzle for my Core One and was really excited to use it. I printed the nozzle replacement tool provided by Prusa and sticked to the guide for switching the nozzle. But unfortunately after changing the nozzle, I was no longer able to load filament - instead I heard loud clicking noises. I was really confused and spend a lot of time with the support to figure out what was wrong. It turns out: The nozzle replacement tool is incomopatible with E3D nozzles!
Because I don't want you to go through the same issues as I did, I modified the tool to be compatible with E3D nozzles (like ObXidian HF):
https://www.printables.com/model/1260118-core-one-nozzle-replacement-tool-for-e3d-nozzles
On the printables model page I also documented the differences between E3D and Prusa nozzles (like the one shipped with the printer), as well as why a different nozzle replacmeent tool is even necessary.
Happy printing switching nozzles!
RE: Core One Nozzle Replacement Tool is incompatible with E3D-nozzles
There is no problem with the replacement tool from Prusa and ObXidian nozzles. You just have to push on the nozzle from bellow before you tight those two thumb screws. To ensure that nozzle is all the way up. But you have to do it with brass nozzles too.
RE: Core One Nozzle Replacement Tool is incompatible with E3D-nozzles
You just have to push on the nozzle from bellow before you tight those two thumb screws.
In my experience, that was not really possible while the tool was holding on to the heater block, because the grip is too tight.
For the MK4S there are also modified versions of the tool for E3D nozzles by Prusa. Unfortunately these versions were missing here, so I made them myself.