Bad spool of filament?

Hello all, I have printed some 300-400 hours on my machine (longest print was close to 100 hours) without any issues in both Z-ABS and Z-Ultrat. Now I tried using Android Green Z-ABS and after making the raft, the filament jams. The feeder pinion is slipping on the filament so nothing goes through the nozzle. I changed the material to another colour used previously, printed fine. Changed back to Android Green, same thing again, filament jamming. I have now changed to a new colour, will try to see what happens.

Is it know that there can be issues with filaments in a batch? Could it be that the spool is wound in such away that it's too much for the pinion to pull?

Thanks!

John Tangerås

I haven’t had a jam, but I did have a filament foo the other way: my black prints runny and bubbly.

try using calipers to measure the diameter of the filament if it’s oversized it can be jamming in the main heater tube if it is under sized there may not be enough pressure to grip it in the feeds here not all plastic is the same and not all manufacturers extrude to very high tolerances.

Is that the new way to keep your filament stiff?

cialis more:drug_warnings_recalls

cialis over counter at walmart viaga

cialis over the counter

  • which is more effective - daily or 36 hour cialis

cialis from canada no prescription you have posted in this thread

This post was really helpful, thank you. I will sleep much better now, u da manz.

I freakin hate spammers!!

Hello there motordude

DId you try cleaning the nozzle? http://support.zortrax.com/problem-with-extrusion/

Hello Chris, thanks for your response. I haven't cleaned the nozzle yet, I will try that. I have a new spare nozzle, I'll try that first to see if anything changes with the android green filament.  I haven't had any problems with other colours, printed about 30 hours trouble free after the jamming with the android green filament. I measured the filament, it's 1.7 mm so it should be OK I think.

John Tangerås

Is it know that there can be issues with filaments in a batch? Could it be that the spool is wound in such away that it's too much for the pinion to pull?

I suspect it is. I had two spools of Z-Ultrat ivory that ended two long running prints with tangled filament  at the same location (at about 70-80% spool usage).

This is about the winding of spools.

I have a spool of Z-Glass that I can do quite nothing with it. Even with Hotend V2 installed I do not get resonable results.

I saw better prints on the forum here. If it's not about me being unable to do it right (using default options), it has to be about differing quality of filament.

If you experience stuck filament with Hotend V2 (otherwise V2 could help) then it's probably too much tension on the feeding path.

Some like to put the spool above the printer to get the tension out of the feeding, me not (just imagine what a tangled spool would go to in such an setup).

I use a spool holder with ball bearings (especially needed when printing dangerous filaments on 2KG spools).

Such holders tend to give too low tension on the filament feeding path that could cause tangling also.

For that reason I just put a little break under the spool (folded heavy paper) to compensate for that.

Make sure spool spins free all the way around. I had to make a longer spool holder because a few rolls would get pinched and bind.

Make sure spool spins free all the way around. I had to make a longer spool holder because a few rolls would get pinched and bind.

I did the same thing.

---------------------------

Plus sometimes the filament binds on the spool. You can pull it but when the machine does it sticks.

If it's just that spool I would suggest unraveling some filament and then respool it and try. 

See this topic

http://forum.zortrax.com/index.php?/topic/1773-stepper-motor-that-feeds-the-filament-is-just-pulsing/#entry22218

I had the same problem and it was the ribbon cable.

I changed it last week and now it's working.

I had the same problem and it was the ribbon cable.

I don't think we are writing about the same problem.

A defective ribbon cable can influence temp and / or extrusion. Actually in my case both was working and the lowered filament feed tension cured the problems (that would not help if the ribbon cable was the problem).

And I think most likely the ribbon cable could also be no problem for motordude, since a defective ribbon cable would not expose errors only with his green spool of filament.

I think this filament could be maybe too soft, then it would work out the way I described.

Easy test for motordude: unwind the filament as suggested by HeavenlyCreations and look what happens (makes only sense if not running a several hours lasting print).

As to my observations the mechanism for the feeding of the extruder (spool holder, tube, motor) is adjusted in a way that 800g spool can be handled o.k.

If you mount a 1KG spool you can get problems already, if the filament is softer you can be in trouble with less heavy spools.