I saw a TikTok the other day of someone explaining that the filament dryers really aren't all that great at getting it dry. Ultimately he explained that food dehydrators are the way to go.

When I've had some filament lying out for a while, I usually start drying it atleast a day before.

I use the eSun Dryer as well, and usually start with a ~5 hour dry on Setting 3, and then another 3~5 hour dry right before I plan to print.

Seems to get the job done :)

Give it 24 hours in the dryer before trying. Drying filament takes time.

The mobility of water molecules inside solid plastic is very very slow.

You need a minimum of 24 hours to see any improvement from drying. Realistically you may need 72+ to truly get water out from the center, and even then you will likely never get it quite as perfectly dry as it was when it was brand new.

Those kind of dryers don’t really let the moisture escape, it needs somewhere to go. Either with desiccant + fan or ideally food dehydrator.