Hello people, I loaded a new roll of PLA filament (extr. 1) in my vertex and now it appears to be stuck in the nozzle. Normally when loading it squirts out some PLA, now it doesn’t. When I unloaded the former filament (also PLA) it only gave one big drop at the nozzle which I didn’t really like because it gave me the idea this would happen. Anyway, what’s best to do now? Do I just keep trying to print and hope it’ll push through at one point? Or so I take the safe course and disassemble the nozzle and clean it? And what’s the best way to do the latter? Help is appreciated. I use velleman filament only.
Two possible causes : a blob of filament before the nozzle or burned filament in the nozzle.
One cure : disassemble the nozzle. First remove the heating block and then the nozzle.
If it’s a blob : use a blow torch to melt the filament and a small rod to push the melted filament.
If it’s burned filament : use a drilling bit to remove the charred filament from the nozzle (I use an old mandrel to hold it). Do it by hand, don’t use any electrical appliance.
Thanks Raby, I think it must be a blob. Will unblock it tonight.
Ok, I have another situation on the same topic. Perhaps they are related. Filament stuck… Ok… Happens.
Nozzle taken apart, hassle, but done. there seemed to be something that it it stuck between the filament guide and the tube fitting. Some kind of a bend.
I have screwed the filament tube fitting off (the threaded collar, with the red sleeve, the tube goes into) and it rotates freely, but inside that and the PTFE tube its hopelessly stuck. Cant get it in, cant get it out. Unlike the K8200 you could pull in something, but here I can’t. At this point it appears, that replacing the two fittings with 70cm PTFE tubing in between is the only solution. How come the fittings can’t come off the PTFE tube?
Has anyone else came across this? How is this solved?
you have to press down on the red ring from opposite sides then pull the tube out.
Yeah, I believed that to be the design. We have those in aviation, however, they actually seem to work. The red color is pressed down by 100kg guy. 14kg guy pulling, but stuck. We are kind of pulling given the design in mind, but its stuck.
we pulled it out with pliers. A pice of the tube was snapped off in the bottom of the fitting, so if there is a release mechanism, its either broken or the direction to release is not pushing… so that is now broken goods. The filament had a bend on it, that had already happed between tube and the extruder. Seemed to have been pushed to hard while possibly having been too hot.
Can you remove the tube by pressing the red color down?
How in earth do I get spares for this? This is on my second print.
Yes I can.
If you have filament in the tube You have to release some of the pressure from the extruder.
I put a clamp on mine so the extruder will not hold the filament while I’m pulling the tube.
Ok, in all fairness all my other 3 seem to be able to release. Still need a spar now. And spar tube.
Eh, you put a clamp on the bottom of the ingress side of the filament entry? where the bare filament enters the tube and motor I guess you could say.
So, when the filament gets stuck in the extruder and you pull it up, you get a blocked tube, like just did. Did I just deal with a stuck filament wrong? I must have pulled where I should not have. Yet, system design could have prevented this quite easily, mean pulling deformed filament backwards into the tube.
Your about the only things between me and the K8400 going out the window. Thanks mate.
I use a spanner. Like with those used in pneumatics, specially in dirty (oily/greasy) environments after a few years hoses cab get really really stuck. Most important is you push the ring STRAIGHT. So the tubes OD is 6mm, I use a 7mm spanner to put the ring down straight and pull the hose while I scull it round a bit… Should work:) maybe while you’re at it let the 14kg guy sing some kum-bah-yah for you 