Problems with the extruder

[keinarsson]

Hello,

I would start a print print fine in draft quality for 3 hours, then start another print right after but the filament gets stuck. The temperature would show a steady 200° but it gets stuck. I took it out and fed the filament through with hand. No problems for the first centimeters but then its like it doesnt melt anymore.

Any ideas?

[satoer]

If the hot-end is clogged, the easiest and best way to clean it, is to floss the hot-end with a piece of guitar string. Feed the fillament trough a piece of sponge to clean it from dust (dust doesn't melt in the hot-end and can clog the hot-end)

If you cool down the hot end and heated bed. Does the software give approximately the same room temperature?

[keinarsson]

Well it did, at first but then when I took the extruder unit apart then the sensor just quit. That was my last one so I have to wait a bit for the next one to arrive.
I will try to clean the extruder and see if that helps.

thanks

[Starwatcher22]

Exactly the same happened to me - filament got stuck - I tried to get it move with a higher temperatur (240 deg) but still no success .
I have no guitar string but used a very tiny 0,35mm drill from the lower end: I could insert it approx 1 cm and had the impression that there was no material left, but filament doesn't go through