Core One filament feed issue  

RE: Core One filament feed issue

I print with PLA all the time in my Core One - no issues. As long as the vent is open it should print fine.....

Something about PLA filament and enclosed printers.

If PLA is damp it becomes brittle and can snap in constrained curves.  Keep it dry.

Cheerio,

RE: Core One filament feed issue

Brand new Prusa filament right out of the sealed bag.

RE: Core One filament feed issue

Happened again this morning. Prusa is sending a new nozzle and i'm disposing of the Prusa filament.

i'm disposing of the Prusa filament.

Just dry it.

Cheerio,

RE: Core One filament feed issue

How do you dry it further when I just took it out of the sealed bag that had a sillica gel packet?

Filament dryer, food dehydrator or (sometimes) an accurate electric oven.  45°C for a few hours should do it.  Make sure the air changes often enough to carry away moisture; dry the sachet as well, it will help keep the spool dry for a few days longer.  You will find many threads here explaining that new filament does not mean dry filament.

Cheerio,

RE:

No offense but when someone blames filament as the problem or faulty, I assume you haven't been printing long.

Your initial instinct is right though, if it's freshly opened, I wouldn't think twice about it needing drying. But I guess it's possible..

As sanity check: Double check the box/bag. Is it PLA, or PETG? It's nothing to worry about but a lot of us have accidentally used PETG in place of PLA, I know that experience lol. 

When you purge, does purging go smooth?

You need to give print settings like Temps and feeds and other relevant conditions to know what's wrong. 

Enclosures don't make PLA print bad. Not sure where you heard that but that's nonsense, don't believe the internet. it's a high quality machine. Designed and tested. They run these in the factory constantly.

I print with only $15 PLA, I've printed it "wet" too after it being open in a moist area for a month. The quality of the print decreases and sometimes comes out blobby, but the filament should still print. PLA is the most basic filament to print.

99.9% of the time if you are having an issue it's either user error either in the slicer settings or setup, or some hardware issue which is more rare but possible.

I guarantee your filament is not the issue, no matter the material. Occasionally I think I've found an issue with material when something goes wrong, and then I slap myself and think "no, don't be dumb". And then I find the real issue lol.

Brittle PLA is damp. Just dry it.  It's simple and it won't do any harm whilst messing unnecessarily with assorted settings may leave a legacy of adjustments to undo.

Cheerio,

RE:

I'd agree to try that first since it's easy, except they said it's a fresh pack of Prusament they got with their new printer, so 99% chance that's not the reason. Not really many settings to look at for this.

They did say something dropped into the nozzle and that was probably it, permanent damage.

A clogged nozzle can happen for these reasons:

- Incorrect temperature

- Incorrect material (which means wrong temperature)

- Old melted filament stuck in nozzle after not printing for a long time, could get stuck on feeding new filament in. Had this happen recently actually.

- very damp filament 

- The rare hardware issue. It's possible they damaged the nozzle with whatever dropped inside it. 

It's been days so I assume they got their new nozzle and fixed it.

Unless the PLA had been sitting submerged in water before it was packaged or it's been sitting on the shelf for a year, eh. I've printed with PLA that was left out for months, and I live in a humid area, it could fail while printing or look crappy finish-wise but took a lot to make it completely stop extruding. PLA is brittle in general too, doesn't take much force to break it.

they said it's a fresh pack of Prusament they got with their new printer, so 99% chance that's not the reason.

Please don't peddle stupidities.

It's spring in the north and autumn in the south, the time of year when AC and heating are not used and high natural humidity has its greatest effect.

Perfectly dry PLA can become brittle in 24-48 hours - and although it was packed dry you have no way of knowing how much humidity the spool has absorbed in the meanwhile, never assume new equals dry.

The core One (and XL) constrain and force-flex filament inside tubing so the printers impose greater stresses on brittle filament than the older Mk2/3/4 machines; attention to filament quality is fundamental to good printing.   Dry it.

[It's also likely that the OP's 'wire casing' was actually a tip-blob caused by humidity driven oozing, they typically break off below the gearing but we can't be sure and it no-longer matters]

Cheerio,

RE: Core One filament feed issue

I've had little pieces of the filament break off as well and had to dig them out.  Original piece I found was the casing from a wire.  Had the hole thru the middle of it.

I live in California and we don't have that much moisture.  As of right now it's at 35%.  I'm not finding any documentation from Prusa that I'm supposed to dry the filament right out of the packaging that has a desiccant pouch in it.

I'm still waiting for the Nozzle to arrive from overseas so I went thru Printed Solid and ordered another one.  Just got it yesterday and I'm still having issues.
I just unpackaged a Flashforge PLA filament and the filament stops coming out about 10-15 minutes later.  Tried a new COEX 3D PLA filament and the same issue came up.
 
I've only used the brand new out of the box Core One for about 2 hours and about 20 hours of troubleshooting.  I've been doing PC and Printer support for 30 years and this is not normal.  

RE: Core One filament feed issue

What PrusaSlicer setting would cause Filament to stop coming out after 10-15 minutes?  The printer keeps going as if Filament is still coming out.

I've had little pieces of the filament break off as well and had to dig them out

Typical brittleness due to moisture.

Had the hole thru the middle of it.

- sometimes happens when pulled from a cooling hotend.

As of right now it's at 35%.

15% is usually OK, I generally aim for 10%.

I'm not finding any documentation from Prusa that I'm supposed to dry the filament right out of the packaging that has a desiccant pouch in it.

It's fundamental to the whole plastics extrusion and moulding industry, always dry before use.  Prusa and all other manufacturers pack the filament dry and vacuum packing with dessicant does keep it useable for a few weeks but never assume it's dry.

Cheerio,

RE: Core One filament feed issue

I'm finding it hard to believe that 4, brand new, out of the wrapper filaments, from 3 different brands has moisture problems.

Are you a representative of the 3D printer industry?  😉  

Just try drying it and decide for yourself.

Ceerio,