[PVA and Breakaway messy printing. Cooling issues?]

hey, thanks for reply!

Yes that was probably what happened to my PVA as it absorbed some humidity while being stored. And yes, I heard quiet sizzling sounds when filament reached heated core. I'll try and dry out these PVA spools.

 

 

How exactly you dry your PVA spools, can you elaborate please? do I need to put something under spool for that, or direct contact with glass is okay?

 

Still I'm confused on why Breakaway PLA looks so messy, any ideas?

 

[PVA and Breakaway messy printing. Cooling issues?]

Hi everyone! 

I already talked to support about this, sent them my BB print core for cleaning but while I wait, I'd like to get some opinions here.

My Ultimaker S5 wasn't doing well with PVA supports out of the box. Prints came off very messy, I have attempted to clean nozzle using cleaning filaments and PLA, but no luck, still lots of issues with printing.

 

This is what my regular PVA supports look like, PLA+PVA.

Cleaning didn't help much. I have a normal extrusion of cleaning filament when I do this. The only problem, probably, is cold pull - it's very hard do pull filament out and when it comes out, the end is still little soft (though I gave it enough time to cool down)

Anyway, sent my BB core back to manufacturer for cleaning, hopefully it helps but I have my doubts.

 

 

Swapped right core for AA core to try Breakaway PLA. Again, nozzle cleaned, did a small test print - all good.

First big print with it (1 day 8 hours) and I get this:

This is a 3rd party ABS with Breakaway PLA.

Same mess happens when I use Ultimakers Tough PLA with Breakaway, though in that case it's easier to clean.

 

 

Prime tower from same print:

 

Looked online for pictures of other peoples prints, supports look much cleaner than what I have even on best prints.

 

Can somebody give any hints to what might be wrong with my printer? Or maybe there's some settings in Cura i need to check?

 

To me it looks like the temperature might be too hot for these delicate support filaments and that's why we see all these strings and artifacts.

 

I also tried small test print with the same print core, loaded with CPE material (high temperature) - printed small hemisphere and it looked clean and consistent. So I assume problem is not with the core, but maybe something else?

 

Thanks,