The Comgrow 3D Printer Filament Storage Box kit targets a simple but very real bench problem: one dry spool is easy, but keeping several partially used spools clean, labeled, and less exposed to room humidity gets messy fast. That is where a multi-box storage setup can make more sense than yet another single dry box.
This is not a powered dryer and it is not pretending to be one. The buyer case is workflow control. If you rotate through PLA, PETG, TPU, or support material across multiple active projects, a box-per-spool system can do more for day-to-day material discipline than one larger catch-all bin.
This listing currently shows 4.4 out of 5 stars from 1,029 customer reviews, which is enough signal to treat it like a real material-handling buy instead of generic storage filler.
What this storage kit is really for
The strongest buyer case is protecting several open spools at once without turning the shelf into a guessing game. A six-box kit shifts storage from loose bags and scattered desiccant packs toward a cleaner repeatable routine. Open spool comes off the printer, goes back into its own container, and stays easier to track until the next job.
That matters more for makers running multiple materials than for someone who burns through one spool at a time. This is a bench-organization and moisture-control purchase, not a rescue tool for already saturated filament.
Why this buyer case is distinct
GoodPrints3D already covers single-spool protection with the HATCHBOX ThermoBox review, bag-based storage with the ELEGOO vacuum storage kit review, and active drying with pages like the BIGTREETECH filament dryer review. This Comgrow kit sits in a different lane: multi-spool storage discipline for people managing several open rolls at the same time.
That makes it meaningfully different from dryers, bags, and one-box solutions. It is about scale at the shelf level.
Who this makes the most sense for
- makers with several open spools in rotation at once
- small shops that want a cleaner material reset between jobs
- owners printing in basements, garages, or more humidity-sensitive rooms
- buyers who are tired of half-used rolls sitting exposed between print sessions
Who should skip it
- people who mostly print from one current spool and finish it quickly
- buyers who actually need active drying rather than storage control
- shops already running a dry cabinet or sealed tote system that works well
- users who want the smallest possible footprint instead of multiple individual boxes
What looks strong
- clear buyer value for multi-spool organization and protection
- separate containers can make labeling, material separation, and workflow resets easier
- better fit than loose bags when you want a sturdier repeated-use routine
- good match for makers who bounce between several active colors or materials
Tradeoffs worth knowing
- storage control is still not the same thing as active drying
- a six-box kit takes more shelf space than one larger bin
- the real value depends on whether you actually keep up the storage habit
- single-material users may not need this much container volume
Where it fits in a smarter filament workflow
The cleanest use case is pairing this with occasional active drying. Dry the spool when it needs recovery, then move it back into sealed storage instead of leaving it out. That gives you a better split between recovery and protection, which is usually how stable filament habits actually work.
If you are still deciding between storage and drying, read the filament storage guide and the drying guide. This product makes more sense after you understand that those are two different jobs.
Editorial take
This looks like a solid buy for operators who have already felt the pain of too many open spools and not enough structure. It is less exciting than a new printer upgrade, but that is often the point. Better material handling tends to pay back quietly through cleaner storage, less clutter, and fewer question marks about what has been sitting out too long.
If your bench is drifting toward bag piles, loose desiccant, and mystery rolls on open shelves, the Comgrow kit is a publishable fit because it solves a real workflow problem with a clear buyer audience.
Should you buy it?
Buy it if you manage several open spools and want a cleaner, sturdier storage routine than loose bags usually provide. Skip it if you mainly need active drying, only keep one spool open at a time, or already have a storage system that keeps material under control.
Common questions
Is a filament storage box the same as a filament dryer?
No. A storage box helps protect filament between uses, while a dryer actively removes moisture. Many benches need both jobs handled separately.
Who gets the most value from a multi-box filament storage kit?
Makers and small shops rotating through several open spools at once get the clearest value because separate boxes make storage discipline easier.
When is a bulk storage box still not enough?
It is not enough when the spool is already wet, brittle, or showing moisture symptoms during printing. At that point you usually need drying first, then better storage once the material is back in shape.
Is this better than vacuum bags?
That depends on the workflow. Bags can save space, but rigid containers are often easier to reuse, label, stack, and maintain consistently.