Hi,
A few people have had hot-end failures recently and, apart from those due to known manufacturing problems in the past, I am curious as to what is the cause.
Is it something to do with mechanical loosening of the joint between the hot-end metal and PEEK component or is it a case of convection within the hot-end causing the filament to melt higher-up within the hot-end and cause leakage?
I am looking for causes and ways to avoid these failures. I thought I might attempt auto-tuning the PID parameters but it occurred to me that this might entail heating the hot-end without any extrusion or cooling which might be potentially damaging.
This hot-end design looks interesting being all-metal, not requiring forced cooling, and usable up to 300C. I wonder if this is the way of the future?
Regards,
Neil Darlow
A few people have had hot-end failures recently and, apart from those due to known manufacturing problems in the past, I am curious as to what is the cause.
Is it something to do with mechanical loosening of the joint between the hot-end metal and PEEK component or is it a case of convection within the hot-end causing the filament to melt higher-up within the hot-end and cause leakage?
I am looking for causes and ways to avoid these failures. I thought I might attempt auto-tuning the PID parameters but it occurred to me that this might entail heating the hot-end without any extrusion or cooling which might be potentially damaging.
This hot-end design looks interesting being all-metal, not requiring forced cooling, and usable up to 300C. I wonder if this is the way of the future?
Regards,
Neil Darlow