Unload filament - Issue
Hello
It is already 3rd time, just wonder why it happens!
How it happens
1. Preheat PLA or already preheated
2. Unload filament
3. when extruder stops i pulled up filament and some part of filament (in shape of drop) stays in teflon tube
4. If i load new filament it goes inside and push that "drop" trough tube to hotted and then stuck in the end of tube ( why in the end - i have found it when disassemble extruder)
5. It is very annoying disassembling extruder every time changing filament 😳
Just wonder why, and what i do wrong while unloading filament.
Thank you!
Re: Unload filament - Issue
I unload filament at 170°C and only then (before loading new filament) preheat to filament target temperature. I did that countless times on MK2 and never got anything stuck in extruder.
Re: Unload filament - Issue
There are occasions I use "Cleaning" filament to push through bad filament left behind when I unload filament and for when I want to change to a different filament. I've had no real problems with having to break open my hotend to clear a clog because of this. I did get a clog last night, but my cleaning filament was able to fix it.
Re: Unload filament - Issue
I unload filament at 170°C and only then (before loading new filament) preheat to filament target temperature. I did that countless times on MK2 and never got anything stuck in extruder.
I've been using your method lately and works like a charm. Much cleaner unloads.
Thanks!
Re: Unload filament - Issue
😉 Thank you guys, will use this method next time!
Re: Unload filament - Issue
The only problem of this method is you can't use it during printing. You can evade that by playing with temperature around M600 gcode command - bring it down a bit before M600 and bring it back after finished M600.