Prints that used to be fine have gone rough. Surfaces look fuzzy. There's stringing you didn't used to get. Before you touch a single slicer setting — check whether the filament has absorbed moisture, because if it has, no setting will save you. The test: Grab your spool, try to bend a piece off the end. Does it snap like a dry twig or bend nicely like a fresh branch? Check out the video and try it yourself! 👎🏼 If it snaps, it's water logged and you should dry it! 👍🏼 If it is still pliable and breaking it requires a considerable amount of flexing. ✅ The fix: dry it. A filament dryer if you have one, 45–50°C for 4–6 hours for PLA. No dryer? Most enclosed printers now have a drying function for this reason, and a lot of people started there. What does not work is leaving it out and hoping — humidity is the thing that put water in it, so more air is more of the problem. 🔰 And the part people skip: PLA absorbs moisture too. The "only PETG and nylon care about this" thing is not true, it's just that PLA degrades more slowly and so you notice later. This is the quick test BEFORE you hit print and see all the visual consequences of wet filament. Anyone had a spool go bad on them? How long had it been sitting out if at all? 🤔