Drying

How should I store filament?

Q: How should I store filament?

Put opened spools in a gasket bin, a vacuum bag, or a cereal box with desiccant. A dry box holds filament after it is dried. Drying temperatures live on the drying guide, not in these storage threads.

First in this ranking: ELEGOO PLA Basic.

Nozzle190–230 °C(374–446 °F)
Bed35–65 °C(95–149 °F)
Speedup to 270 mm/s
Dry50 °C(122 °F)for 8 h
Density1.2 g/cm³

Ranked filaments

Rank	Filament	Material	Nozzle	Bed	Price / kg	Datasheet	Buy
1	ELEGOO · PLA BasicELEGOO PLA Basic lists drying at 50 °C (122 °F) for 8 h on the US 10 kg page, stated as 50 ± 5 °C (122 ± 9 °F), with a nozzle of 190–230 °C (374–446 °F) and a bed of 35–65 °C (95–149 °F). The storage threads do not name this spool. The drying figure is the catalog.	PLA	190–230 °C (374–446 °F)	35–65 °C (95–149 °F)	—	—	Amazon ↗
2	Prusament · PETGPrusament PETG lists a nozzle of 240–260 °C (464–500 °F) and a bed of 70–90 °C (158–194 °F) on its technical data sheet. Drying is not stored on the row. r/BambuLab 1ug1uxp is the thread that names opened PLA and PETG together.	PETG	240–260 °C (464–500 °F)	70–90 °C (158–194 °F)	—	Datasheet	Amazon ↗
3	Prusament · TPU 95APrusament TPU 95A lists a nozzle of 220–240 °C (428–464 °F) and a bed of 55–75 °C (131–167 °F). Drying is not stored on the row. The dry-box thread is about dryers in general, not this TPU.	TPU	220–240 °C (428–464 °F)	55–75 °C (131–167 °F)	—	—	Amazon ↗

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Seal opened spools with desiccant, and dry them on the schedule the product actually lists. Drying is that schedule. A container is not a dryer.

What people are using

On r/3Dprinting 1r9dhbx the poster just started, lives in Arizona, and contrasts open racks with airtight boxes. A score-35 comment uses 80 qt Sterilite bins with a gasket seal and desiccant beads. A score-12 comment keeps spools in vacuum bags inside the original boxes. Another score-12 comment says one container holds up to 16 rolls once desiccant packs go in.

On r/BambuLab 1ug1uxp the question is opened PLA and PETG. The leading comment uses cereal containers with flip lids, plus printed spool mounts, desiccant holders, and a filament pass-through. A score-16 comment uses reusable vacuum bags for engineering filament at work and leaves PLA in piles at home.

On r/BambuLab 1bb97vz the poster prefers zip-style bags, named as IKEA bags, with one or two reusable desiccant pucks. A comment uses cereal boxes and desiccant packs on shelves. Another comment leaves filament in the open.

On r/3Dprinting 16hlz25 the question is which dry box to buy. The retrieved comments compare a purpose-built dryer with a food dehydrator and talk about printing walls so the food trays survive. That is a dryer conversation. The temperatures for it are on drying.

The catalog rows

ELEGOO PLA Basic is the row here that lists a drying time: 50 °C (122 °F) for 8 hours, stated as 50 ± 5 °C (122 ± 9 °F), with a nozzle of 190–230 °C (374–446 °F) and a bed of 35–65 °C (95–149 °F). Prusament PETG lists 240–260 °C (464–500 °F) and 70–90 °C (158–194 °F), and drying is blank. Prusament TPU 95A lists 220–240 °C (428–464 °F) and 55–75 °C (131–167 °F), and drying is blank. PLA, PETG, and TPU are the hubs.

On r/BambuLab 11j8dhj stock Bambu filament was already in a dry box and the walls were still poor after a tuned k value and flow ratio. The comments talk about outer walls at 50–60 mm/s and pressure advance. Filament quality is the next check when storage was not the defect. PLA printing and PETG printing are the print guides.

Pros and cons

Pros

The sealed-bin, vacuum-bag, and cereal-box methods are each tied to a thread.
Drying temperatures stay on the drying page and on the ELEGOO row, which is the row that actually lists a time.

Cons

No thread here measures a humidity target or a desiccant mass. The 80 qt size and the 16-roll claim are those comments.
Prusament PETG and TPU 95A do not list a drying temperature. A storage page cannot invent one.

Printer considerations

On r/3Dprinting 1r9dhbx the poster is in Arizona and calls the humidity low. A score-35 comment uses 80 qt Sterilite bins with a gasket and desiccant beads. Another comment uses vacuum bags kept in the original boxes. A third says a container holds up to 16 rolls with desiccant packs.
On r/BambuLab 1bb97vz the poster stores spools in IKEA zip bags with one or two reusable desiccant pucks. A comment uses cereal boxes with desiccant packs. Another comment leaves filament out in the open.
On r/BambuLab 11j8dhj the filament was already in a dry box and the walls were still poor. Storage did not fix that print. The comments move on to outer-wall speed and pressure advance.

Printer limits

What the community says

r/3Dprinting 16hlz25 asks for dry-box brands. The retrieved comments talk about the cost of a purpose-built dryer versus a food dehydrator, and about keeping the dehydrator usable for food by printing walls instead of wrecking the trays. r/3Dprinting 1r9dhbx asks for a storage solution. The poster mentions low Arizona humidity and both open racks and airtight boxes. Comments show gasket bins with desiccant, vacuum bags, and a bin for up to 16 rolls. r/BambuLab 1ug1uxp asks what to do with opened PLA and PETG. The leading comment uses cereal containers with printed lids and a filament pass-through. Another uses reusable vacuum bags for engineering filament at work and leaves PLA out at home. r/BambuLab 1bb97vz prefers zip bags plus desiccant pucks. r/BambuLab 11j8dhj is a P1P wall-quality print of Bambu filament that was already in a dry box.

Sources & notes

Accessed 17 October 2026.

ELEGOO US PLA Basic 10 kg product page manufacturer
Prusament PETG technical data sheet datasheet
Prusament brand site manufacturer
Open Filament Database, Prusament TPU 95A other
Community source, r/3Dprinting 16hlz25 reddit
Community source, r/3Dprinting 1r9dhbx reddit
Community source, r/BambuLab 1ug1uxp reddit
Community source, r/BambuLab 11j8dhj reddit
Community source, r/BambuLab 1bb97vz reddit

Answer JSON · Markdown

Questions

Does a dry box replace drying?

The storage threads describe where a spool sits. ELEGOO PLA Basic still lists drying at 50 °C (122 °F) for 8 h, written on the product page as 50 ± 5 °C (122 ± 9 °F). The drying guide is the temperature page. A dry box on r/BambuLab 11j8dhj did not fix poor walls.

What did people in a dry climate say?

The poster on r/3Dprinting 1r9dhbx lives in Arizona and calls humidity low all year. A reply from Tokyo describes a much wetter season. The gasket-bin comment is on the Arizona thread, and it still adds desiccant beads.