Trouble with filament in extruder

Hello all,

I have a prusa longboat and i cant seem to get the filament out of the extruder or hot end or get it to reverse out. I have taken the wing nuts off and the springs and tried to pull but to is too tough.

Any ideas on what i could do?

thanks alot

Simon

p.s it is very frustrating

Have you heated up the hot end before trying to remove the filament?

yes the hot end was on at 200c - i am using pla

It should come out. If it doesn't it implies the bore expands below the entrance but above the point where it is molten. You could try 240C and see if that shifts it.

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[www.hydraraptor.blogspot.com]

Sometimes if I forget to slack off the nuts on the idler, the pressure will smash the still-malleable filament flat while I'm reversing it out. This prevents the filament from fitting through the feed hold in the wade's extruder block. Fixing it requires removing the idler, grabbing it out with a pair of needle nose pliers and snipping off the smashed part so the filament can fit be removed.