1

I have been printing for some months now and after a few tries as able to get things going. But recently my printer keeps jamming. I have tried to change the fiber, changing the print rate, temperature, I have cleaned the nozzle many times I even brought a fiber to clean the nozzle without using the acupuncture pins. I did finally give in and used the pins. I can get the fiber to flow for a while but after 1/2 inch the nozzle jams and I have to clean it again.

Does anyone know what is happening? And how to corrected it?

2

Hmm, it seems like a dust accumulation problem inside your nozzle. I recommend getting a new nozzle.

Trust me, it will save you a lot of time and frustration. But if you want you can also try this: nozzle-cleaning [Bukobot 3D Printer Instructions & Docs]

3

It’s possible there is an accumulation of tiny bits of filament stuck inside the nozzle, and/or in the heat break right above it. Check out 'how to’s on removing, cleaning, and replacing them if you haven’t done it before. Daunting at first, but not too difficult after the first, second, or third time.

4

Printer type, filament type, temps, speeds, retraction settings, what are you printing etc. The question is very vague to answer without just guessing which helps no one.

5

Thank You, I was thinking it maybe the heat sink only because I had it working for a long time and made many prints, with a few adjustments, and then it just starts jamming. It may have started to build up. But it also could be dust, leading to the same problem, a build up in the heat sink. The cleaning filament I have, mention below, comes out very clean. I did use it a few times.

Is there a way to find out if the dust has build up in the PTEF Tube and how to clean it?

6

People sometimes replace the PTEF tube, but it’s easier to simply replace the heat break itself. They range in price and quality from several for under five dollars, to a single heat break for ten or twenty. It’s generally a good idea to a few on hand, along with a handful of nozzles. I went through several nozzles before realizing the problem lay in the heat break.

7

Thank you, I like the idea of replacing the heat sink, nozzle, and tube. And have spares on hand.

8

Well you would have to take it apart and look at it. You should be able to see either filament or dirt stuck inside.

Otherwise, it means it’s not the problem.