<p>It’s most likely a humidity issue. I’ve encountered similar problems before. I recommend avoiding exposure of the filament to the environment and storing it in a dry place if you won’t be using it for more than a day. Personally, I keep my filaments in ziplock bags along with silica gel.</p>

CC BY-SA 4.0
2024-08-26T11:37:12.200Z
This combined with Carl's answer would solve and prevent your problem. Store dry and bake when wet.
Hacky
CC BY-SA 4.0
2024-08-25T13:56:23.023Z
2024-08-25T13:56:23.023Z
Edson Jr.
<p>This is almost certainly due to your filament being hydrated.  Try baking out the reel at a low oven temp (75 to 125 °C)</p>

CC BY-SA 4.0
2024-08-24T20:09:45.133Z
That high? I usually go 70 °C for PETG, wouldn't heating PLA+ to those temperatures deform the filament?
0scar
CC BY-SA 4.0
2024-08-25T12:12:38.550Z
@Oscar  Given the melting point  is at least 180, I wouldn't think so, but 70 should work fine, albeit taking a bit longer.
Carl Witthoft
CC BY-SA 4.0
2024-08-24T17:09:28.767Z
2024-08-24T20:07:54.517Z
2024-08-24T20:07:54.517Z
Carl Witthoft
<p>Hi 3D Printer enthusiasts!, I currently use an Ender 3 printer and a Numakers PLA + black filament. Unfortunately, when I finish a print and leave the printer off with the filament attached for a few days, the suspended filament (the gap of filament from the spool to the bowden extruder) begins to crack. I have no idea why this happens and would like help.</p>

CC BY-SA 4.0
2024-08-24T14:25:55.833Z
How long after you have finished the print do you notice the filament cracking? Do you live in a high-humidity environment?
agarza
<creality-ender-3><filament><filament-quality>
Filament cracks after left untouched
Aerospace_Nerd
# Filament cracks after left untouched

(Asked by: username_0 on 2024-08-24)

Hi 3D Printer enthusiasts!, I currently use an Ender 3 printer and a Numakers PLA + black filament. Unfortunately, when I finish a print and leave the printer off with the filament attached for a few days, the suspended filament (the gap of filament from the spool to the bowden extruder) begins to crack. I have no idea why this happens and would like help.

**Tags:** creality-ender-3, filament, filament-quality
> **Comments:**
> **username_1**: How long after you have finished the print do you notice the filament cracking? Do you live in a high-humidity environment?  

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## 2 answers

### Answer by username_2 on 2024-08-25. Score: 1

It’s most likely a humidity issue. I’ve encountered similar problems before. I recommend avoiding exposure of the filament to the environment and storing it in a dry place if you won’t be using it for more than a day. Personally, I keep my filaments in ziplock bags along with silica gel.

> **Comments:**
> **username_3**: This combined with Carl's answer would solve and prevent your problem. Store dry and bake when wet.  

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### Answer by username_4 on 2024-08-24. Score: 0

This is almost certainly due to your filament being hydrated. Try baking out the reel at a low oven temp (75 to 125 °C)

> **Comments:**
> **username_5**: That high? I usually go 70 °C for PETG, wouldn't heating PLA+ to those temperatures deform the filament?  
> **username_4**: @Oscar  Given the melting point  is at least 180, I wouldn't think so, but 70 should work fine, albeit taking a bit longer.  

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