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I'm trying to combat filament moisture during 3D printing and have two options:

  1. Using an airtight storage box with no holes for filament storage when not printing.
  2. Placing the filament spool inside an airtight box during printing, equipped with roller wheels and a small hole for the filament to exit.

Which option would be more effective in preventing moisture-related print failures?

0scar
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morgan
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2 Answers2

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Which option would be more effective in preventing moisture-related print failures?

Let's look at the options:

Using an airtight storage box with no holes for filament storage when not printing.

And I assume printing after getting it out of the box to put it back after printing. This is excellent for long time storage, it is much simpler/practical to use vacuum bags instead of a box. I use this method on one of my printers, works fine if the filament isn't out of the box/bag for days. For shorter runs I've printed even Nylon like this, but note that it might depend on the filament brand. Another member commented that they did encounter moisture problems when exposing Nylon to the open air in hours. This also depends on the moisture in the air.

Placing the filament spool inside an airtight box during printing, equipped with roller wheels and a small hole for the filament to exit.

This is excellent for short time use when printing.

For one of my printers I use both (this is a large size printer, so long prints are possible), for another only the long time storage (smaller printer for relative small/short prints). Both methods of operation work fine.

It takes time for filament to absorb moisture, so generally, the first option should be sufficient. If not, you could dry your filament in a dryer used for drying food.

0scar
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I have several spools of filament, so I built a dry box based on a video from YouTube by Chris Meade.

All the parts were purchased from Amazon (these are not affiliate links). It includes a sealed storage container, a mini hygrometer to measure moisture levels, and a mini dehumidifier. The container size allows for storage of about a dozen full spools, and so far (three weeks or so) has kept the humidity levels in the 25-30% range despite some humid weather. The total cost was around $55 US, half of which was the large storage container; you could reduce this if you could use a smaller container size.

All the parts were purchased on Amazon. (These are not affiliate links. I don't get anything for posting them). Sorry for the poor quality pics - I built it on some paper packaging on the floor of my office, and the lighting isn't great. The photos were taken within about five minutes of building it, so the humidity is still high; it dropped within an hour or so.

Storage box - broad view enter image description here

Ken White
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