What’s interesting is I was having a hard time wrapping my head around WHY does wet filament become brittle and no one I talked to was able to answer me the way I understood (like a kid in basic chemistry 
) when I was asking and googling many many months ago.
I knew nothing about ChatGPT at the time I although it was out it wasn’t as mainstream as it is today so I decided to ask that question “Why does Filament become brittle when it’s absorbed moisture?” today to hopefully better understand it a bit more and it did not fail.
ChatGPT 3.5 - “ Filaments, especially those used in 3D printing, are made of polymers. When these polymers absorb water, the water molecules insert themselves between the polymer chains. This disrupts the attractive forces between the chains, which normally provide flexibility.
As a result, the weakened connections between the polymer chains make the filament more prone to breaking, just like a weakened chain in a necklace is more likely to snap. The absorbed water essentially acts as a barrier between the polymer chains, reducing their ability to slide past each other smoothly and making the filament brittle.
So basically, it’s like adding water between the building blocks of the material. This weakens their connections, making the filament more likely to break easily, similar to how wet paper becomes weaker and tears more easily.”
Thanks ChatGPT I understand now!