removing nozzle issue  

Re: removing nozzle issue

Hi,
Instead of using the pliers to unscrew the nozzle, try the 7 mm spanner. It's a lot better and it won't scratch the nozzle as the pliers.
Unscrew to the left. If it's stuck, try to preheat the hotend to higher temperature like 230°C.

Re: removing nozzle issue

when i change the nozzle (did it this weekend because of a complete hotend "service"), i hold the hot (as hot as it goes) heater block with a 24mm wrench at its front and back surface (not the sides, where you got the thermistor and the heater peeking out) and use a 7mm nut to loosen the nozzle.

best would be to disassemble the whole extruder body and span the hotend with its cooler into a bench vice, while it's electronics are still connected to the rambo, like tom does in his how to video.

Re: removing nozzle issue

Thanks so much, totally worked, 7mm nut got it unstuck, funny how I couldn't do it with pliers. Any recommendations for a more robust nozzle? Is there a certain brand that most people use when printing with metal filaments that works well?

Re: removing nozzle issue

💡 look at the link that i posted above. there thomas sanladerer gives some infos about other nozzles.
furthermore there are some threads here about hardened, stainless steel and other types of nozzle.

💡 unless you are dealing often with exotic filaments (like carbon fibre), i personally would stay with the brass nozzle. it provides very good heat conductivity, suits for the most filaments and is cheap to replace.