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.
After disassembly 
Im having a problem with grip on PVA I thing the material is too hard.
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.
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.
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In this stable release, Cura 5.3 achieves yet another huge leap forward in 3D printing thanks to material interlocking! As well as introducing an expanded recommended print settings menu and lots of print quality improvements. Not to mention, a whole bunch of new printer profiles for non-UltiMaker printers!-
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The UltiMaker S7 is built on the success of the UltiMaker S5 and its design decisions were heavily based on feedback from customers.
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The obvious change is the S7’s height. It now includes an integrated Air Manager. This filters the exhaust air of every print and also improves build temperature stability. To further enclose the build chamber the S7 only has one magnetically latched door.
The build stack has also been completely redesigned. A PEI-coated flexible steel build plate makes a big difference to productivity. Not only do you not need tools to pop a printed part off. But we also don’t recommend using or adhesion structures for UltiMaker materials (except PC, because...it’s PC). Along with that, 4 pins and 25 magnets make it easy to replace the flex plate perfectly – even with one hand.
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Cura Alpha With New Tree Support 🎄
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Are you a fan of tree support, but dislike the removal process and the amount of filament it uses? Then we would like to invite you to try this special release of UltiMaker Cura. Brought to you by our special community contributor @thomasrahm
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DidierKlein 729
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?
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