8 votes
Accepted

How do I know when filament is getting old, and what things can I do to correct for it?

The primary issue with long-term exposure of filament to the environment is that it will absorb water moisture from the air. When a filament that has absorbed water is passing though the hot end of a ...
mbmcavoy's user avatar
  • 798
6 votes

How long can you leave filament in the extruder

Most filaments you can leave in the extruder indefinitely without any ill effects. There are some filaments that need to be stored away from moisture, particularly Nylon, because they absorb moisture ...
Tom van der Zanden's user avatar
4 votes

Is PETG sensetive to moisture?

Here are some pics I took a while back of a test piece, single-wall cube with no infill, before (right) and after (left) drying PETG: and again without flash: As you can see, the undried filament ...
R.. GitHub STOP HELPING ICE's user avatar
4 votes

Humidity sensor says drybox isn't that dry - are my expectations unrealistic or is something wrong?

Track humidity graph over days (one measurement every 3 hours is fine). Be careful that polling the sensor too often may warm it up and cause inaccuracies, the temperature dependence is quite strong. ...
FarO's user avatar
  • 4,263
4 votes

How do I know when filament is getting old, and what things can I do to correct for it?

Moisture creeps into the filament when PLA is exposed for a long time to a humid environment. This is audible like popping bubbles when heated in the hotend and does worsen the print quality. The ...
0scar's user avatar
  • 35.8k
3 votes

How long can you leave filament in the extruder

If you "planing" to leave the filament there for months, then it would be a good idea to store it away, but for most filaments it is not a big deal to be stay loaded... provided that the humidity is ...
Horitsu's user avatar
  • 668
2 votes

Vacuum storage bags?

I've read people are using them, makes sense, the less air you contain, the less moisture would be in the bag. Myself, I'm using IKEA ziplock bags (and moisture absorbing sachets), they come in many ...
0scar's user avatar
  • 35.8k
2 votes

Humidity sensor says drybox isn't that dry - are my expectations unrealistic or is something wrong?

Alright, there were some good suggestion in the comments, and I gave them a look, but I think I solved this myself. I think, after a lot more testing, that it was some combination of stratification ...
DodoDude700's user avatar
1 vote
Accepted

What ambient humidity should one target for filament storage?

The closer to zero humidity the better. Maybe a garage or some place protected from rare precipitation outside would be better. If one room is considerably less humid than the others, you could use ...
Perry Webb's user avatar
  • 2,366
1 vote

Vacuum storage bags?

I have a commercially available product known as a foodsaver (TM) which removes the air from the bag and really squeezes tightly around the spool. The width of the bags I use barely takes the typical ...
fred_dot_u's user avatar
  • 11.5k

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