Brand new UM3E Lots of noise when loading PVA

[Swissengineer 25]

Hello everyone,

Just got ma new UM3E,

printed a few things with no problem with PLA. And no problems with loading or unloading.

But when I load the PVA into the feeder on the back, and the feeder goes in full speed to load, and it makes A LOT of noise (like cracking), I tried with PLA had no problem. Do you guys had the same thing? Is it normal?

[DidierKlein 725]

How did you store the PVA? Is it humid in the place where you store the filament or the printer?

PVA absorbs humidity quite fast so it could be the reason? Personnaly i didn't have that issue with the Ultimaker PVA but some of the beta testers had issues with humidity.

How does it print?

[Swissengineer 25]

Has been 1 week since I got the filament installed in the printer (since I got it). It seems to print correctly, it is just the noise that is weird, like if the filament was really hard. Should the PVA be as soft as the PLA when I feel the filament? It seems really to bend.

[Swissengineer 25]

 

There is my problem! HELP!!!

[Swissengineer 25]

After disassembly

Im having a problem with grip on PVA I thing the material is too hard.

[neotko 1,414]

I might be 100% wrong but I think your BB core needs an atomic (or 6). PVA is quite hard and is very hard to get a bite like that unless you adjusted the print temp or speed from a profile without compensating both.

Please try to clean it

https://ultimaker.com/en/resources/23132-maintaining-the-bb-print-core

The 'sounds' happen more when PVA is getting cooked on the core.

[Swissengineer 25]

Ok I just got my new PVA roll, I tried and it worked perfectly with no problems. So I am pretty sure my first PVA which was sent by Ultimaker was exposed to humidity during transport and storage. I just got it since 1 week so I think there was a problem there.