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[Risolto] Bringing to life Defective Filament?  

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Enkii
(@enkii)
Active Member
Bringing to life Defective Filament?

Hello people! I have a little problem with my filament spool.

I was buying new PETG filament from AzureFilm in my country. Unfortunately I find out that they stopped production of this specific filament. After opening the filament the spool looked like it's filled with lot's of bubbles inside. I thought it's just few meters on outside and the possibility of it being wet. After I print something from it it was seen also on prints that its not good (see added photos) and that the whole spool is like that. From searching info about this on various forums it may be defective filament from factory...

Yet I wanted to know if its possible to somehow save this filament, even when you don't have special tools for filament making? I really like the color and fact that it's PETG. And I don't want to just toss it in the trash and try to bring it back to life if it's somehow possible.

I'll appreciate any help.

Thanks!

Postato : 19/01/2025 2:41 pm
efvee
(@efvee)
Estimable Member
RE: Bringing to life Defective Filament?

Maybe start with a good long drying session.

 

Postato : 19/01/2025 11:02 pm
1 persone hanno apprezzato
Enkii
(@enkii)
Active Member
Topic starter answered:
RE:

Since i don't have dryer i was thinking of drying in the oven like many people do, im just kinda afraid of it because I read that a slightly higher temp may melt the filament way too much, so i must learn what are the best temps for that and how long it should be in the oven. Also Wouldn't it after that loose it's properties? Like strength etc.? I never had issue with wet filament over the years of printing so I'm a little worried of ruining the whole spool in oven 😀 Anyway thank you for advice! 

Postato : 20/01/2025 8:47 am
efvee
(@efvee)
Estimable Member
RE: Bringing to life Defective Filament?

Tip: In a household oven put 'thermal inertia' in the form of a stack of plates for more stable temperature.  Modern ovens are lightweight and may see considerable temperature overshoot when heating up. They simply are not designed to be operated at a combination of low temperatures and low fill. The temperature you cannot help but at least give it something to work on, like a few kilograms of earthenware. Also add a cooking thermometer to see if that reads about the same as the oven's own readout. 

Then, btter choose your drying temperature on the safe side and let the spool 'sweat' an hour or two more.

Postato : 20/01/2025 9:32 am
Enkii
(@enkii)
Active Member
Topic starter answered:
RE: Bringing to life Defective Filament?

Thank you for the tip! I'll definitely give it a try 😊 

Postato : 20/01/2025 9:38 am
Robin_13
(@robin_13)
Reputable Member
RE: Bringing to life Defective Filament?

There are warnings about using regular ovens.  Oven temperatures are not consistent and can fluctuate.  You want to stay below the glass transition temperature that is around 80 degrees.  Recommended temperatures that I have seen are 65 to 70 degrees.  Use an external oven thermometer to watch the temperature and do a test of the oven before putting the filament into the oven.  Even a lower temperature will dry the filament, just take longer.

I tried a different method and found that the temperature was good in part of the container but much hotter in other areas.  Did some slight damage to some filament.

Postato : 20/01/2025 9:41 am
1 persone hanno apprezzato
Enkii
(@enkii)
Active Member
Topic starter answered:
RE:

I'll def do proper research, but it's always better when people who already have experiences with it help or write down their knowledge! Thank you so much for another tips! <3

I'll try to dry the filament after work so I'll add updates of how it all worked out. 

Postato : 20/01/2025 9:57 am
Robin_13
(@robin_13)
Reputable Member
RE: Bringing to life Defective Filament?

If you live in the areas of the cold weather right now, a great way to heat up the house before bed.  Good luck.

Postato : 20/01/2025 6:15 pm
Enkii
(@enkii)
Active Member
Topic starter answered:
RE: Bringing to life Defective Filament?

Thank you! Hopefully I wouldn't heat also neighbours house 😆 

Postato : 20/01/2025 7:17 pm
_KaszpiR_
(@_kaszpir_)
Noble Member
RE: Bringing to life Defective Filament?

Try drying a small part of it, like 10cm and see how it goes.

If it does not change then maybe you could trade in with someone else in the nearby.

Otherwise try to find alternative in https://filamentcolors.xyz/

See my GitHub and printables.com for some 3d stuff that you may like.

Postato : 20/01/2025 10:10 pm
1 persone hanno apprezzato
Enkii
(@enkii)
Active Member
Topic starter answered:
RE: Bringing to life Defective Filament?

Oohh! Good idea! Tbh I didn't think about it this way so thank you, at least i dont ruin whole spool even more. 

Unfortunately I don't know if i find this specific color since AzureFilm stopped production of that color in PETG. And I more prefer to print from PETG. Yet I have ordered sample of prusament i liked and in similar color so I'll see how that goes.

Anyway, Thanks to all of you for tips and help! I Really appreciate that. I'll  try to bring the filament back to life, otherwise I'll have at least new experience 🙂 

Postato : 20/01/2025 11:10 pm
Enkii
(@enkii)
Active Member
Topic starter answered:
RE: Bringing to life Defective Filament?

Hi people! I'm sorry for being quiet for so long. So what I find out. Drying didn't helped. Since there are literally tons of tiny bubbles inside the spool it's kinda hard to resolve this. Printing from it is kinda hard but it's not impossible. I find out that key is to put a bit higher temp (since I usually print PETG on 240°C, I raised it to 250°C) and set flow rate to higher values. For this filament especially the flow rate goes from 95 to 120. Yes, it strings even with better retraction settings, but for basic prints it's enough and also the color seems prettier. So I guess this is how I would print from that defective Petg. 

Thank you to all of you for helping and trying to help me resolve this filament problem 🙂

 

Here is photo of print i was testing the settings for this defective filament on. And i think its fine, not great but its fine.Defective  

Postato : 13/02/2025 10:13 am
Robin_13
(@robin_13)
Reputable Member
RE: Bringing to life Defective Filament?

Thank you for the update.  Sorry to hear it didn't work, glad you found a way to use the filament. 

I don't have experience with moist filaments but in some of my work, to remove deep set moisture, we had to put devices under vacuum as well as heat for days.  Vacuum lowers the boiling point of the water making it a vapour at room temperature.  Put in a decent vacuum bag with some freshly recharged desiccant, when not being used may slowly bring it back.  Of course with you modified procedure, you may use the full spool before it is dry.

Postato : 13/02/2025 5:57 pm
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