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Dewpoint
Our product

Single Filament Storage Box

An open spool pulls moisture out of Indian air within hours — and wet filament is what strings, pops and snaps mid-print. This box seals a 1kg spool behind a gasketed snap-lock lid, stands it on a printed roller base so it turns freely, and feeds it out through a bulkhead port, so the spool never has to come out to print. Sold single, or in sets that cost less per box for a bench running more than one material.

  • Fits 1kg spools to 200 × 70 mm
  • Sealed below 20% RH
  • PTFE feed-through fitted
₹699Inclusive of GST
View full details
78%Relative humidity in Ahmedabad right now — open-spool PETG risk: Elevated. Why filament fails
The Single Filament Storage Box sealed, a spool loaded inside on its green roller base
Airtight shell, spool rollers, sealed PTFE port and one rechargeable desiccant pack — everything in the box.
01 · Tell us what you're seeing

Pick the symptom you recognize

What's happening

Absorbed water flashes to steam at the nozzle, pulling thin trails between travel moves — retraction settings alone rarely fix it.

The fix

Dry the spool at 45–55°C for 4–6 hours, then store it sealed below 20% RH so it stays that way.

02 · The evidence

Seven days, one open spool of PETG

Relative humidity, open shelf storageAhmedabad workshop
62%
68%
74%
71%
78%
81%
78%
MonTueWedThuFriSatSun

Dashed line: 60% RH, the point PLA and PETG begin absorbing moisture fast enough to affect a print within days. Sealed-container readings from the same shelf stay under 20% RH.

Diagram: how moisture reaches the nozzle (spool → absorption → heat break → steam)
03 · The resolution

Keep the spool sealed, print through the seal

The Filament Storage Box holds a spool below 20% RH indefinitely, and feeds filament through a PTFE port — so it never needs to come out to print.

View the Filament Storage Box — from ₹699
04 · Compare your options

One spool or four

ProductSpoolsSold asPrint-directTube run to extruderDesiccant incl.From
Single Filament Storage BoxBest per-unit price on sets1Single, set of 2, set of 4YesNot includedYes₹699View
Filament Storage Box with PTFE TubesFour materials sealed at once4Single, set of 2YesOne run per portYes₹2,499View

Or read the full, honest DIY comparison →

05 · Bundles

Set up one printer or a whole farm

One printer
Single Filament Storage Box — Single unit
₹699

Enough to keep a single active spool sealed and feeding.

Two printers
Single Filament Storage Box — Set of 2
₹1,299

Run PLA and PETG dry side by side.

Small print farm
Single Filament Storage Box — Set of 4
₹1,999

Best per-unit price — for four machines running different materials.

Fits most 1kg spools up to 200mm diameter, 70mm width
PLA · PETG · TPU · Nylon · PA-CF — check exact fit on the product page
Check my spool
06 · Honest build-vs-buy

Yes, a food container plus desiccant can work

A gasket-sealed kitchen container and a bag of silica can hold a spool dry for roughly what a finished box costs. Here's exactly what you'd still need to source, build, and maintain — and where a finished product earns its price instead.

Read the DIY comparison
07 · From the workshop

Verified purchase reviews

★★★★★Verified purchase
Customer photo

Stopped fighting brittle CF snaps the week this arrived. Prints straight through the port now.

Rohan K. · PA-CF, Pune
★★★★★Verified purchase
Customer photo

The bearing feed is smoother than my old cardboard-box setup. No more stringing on humid days.

Ananya S. · PETG, Bengaluru
★★★★☆Verified purchase
Customer photo

Does exactly what the spec sheet says. Wish the desiccant pack were a bit bigger for our farm.

Vikram D. · TPU, Ahmedabad
08 · Humidity Lab

Diagnostic reading, not marketing copy

Stop guessing. Start measuring.

₹699 · inclusive of GST · ships in 24–72 hours to serviceable pincodes

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