Stackable Filament Dry Box–Shelf-Sized Storage 2.2

SnapStack DryDock v2.2 | Stackable Filament Dry Box (Bambu Footprint) | Embedded Swatch Magnet

The last dry box you’ll need (my wife said so… then tried v2 and doubled down). 😄

Version 2 is the upgraded, stronger evolution of my shelf-sized filament dry box, designed around the Bambu filament box footprint so it still fits into most Bambu-style shelving and rack systems. It’s stackable, space-saving, hygrometer-ready, and built for tidy filament storage without resorting to cereal-container hacks.

Each box stores one Bambu spool (other spools may fit, untested). Inside, the desiccant layout keeps moisture control close to the filament so you can maintain low RH where it actually matters.

⚠️Compatibility note (read this bit) ⚠️

• v2.x is not compatible with v1.x (lids and bodies won’t swap).
• v2.1 is a drop-in upgrade for v2 owners: the box and lid stay the same. To upgrade from v2 to v2.1 you only need to print the Pro Gasket and the new taller latches.

Shelf/rack fit note

v2 is still designed to work with most shelving solutions made for Bambu boxes, but it is slightly taller, and the hinges/snaps add a small amount of extra width/length beyond the main body. If your rack is an ultra-tight “perfect press-fit” design, allow a little clearance around the latch/hinge areas.

Parts I use

I use quite a bit of magnets in my designs and love to buy strong ones with variable sizes for prototyping like these: https://amzn.to/4rvFkAi

v2.2 – New name along with Embedded Swatch Magnet (New)

What’s new

• The swatch magnet is now embedded during the print for a cleaner finish and sturdier hold.
• Rebranding the boxes to SnapStack, more variants will be landing soon

How it works (Bambu Studio)

• The provided .3MF already includes a pause in the G-code.
• At Layer 156, the printer will pause so you can drop in a 10 × 2 mm round magnet (10 mm diameter, 2 mm thick) into the cavity.
• Resume the print and the next layers seal the magnet inside.
• No glue needed.

Prefer the old way?

• If you don’t want to embed a magnet mid-print, stick with v2.1 (no pause / no embedded magnet step).

v2.1 ✅ (Pro Gasket update)

• Pro Gasket added (TPU): improved sealing on the bottom edge.
• “GT Stripe” effect: the gasket is intended to be printed in black TPU, and when your box is printed in another colour it creates a clean contrast line that looks like a stripe.
• New taller latches required: the latches are taller to accommodate the gasket thickness and maintain a confident latch engagement.
• Drop-in upgrade: your existing v2 box + lid still work. Just print the gasket + v2.1 latches.

Good to know: I’m keeping the v2 profile available for anyone who wants to print the box without the Pro Gasket.

v2 ✅

People asked for a better lid experience, so v2 focuses on what you touch every day:

• Improved lid system: a hinged lid with a snap-lock latch for a more confident close and a smoother open/close experience.
• Stronger body: thicker outer shell and reinforced geometry for better durability and long-term stacking.
• More consistent closure: designed to reduce the “too tight / too loose” behaviour that can happen with pure friction-fit lids.

Key features (the good bits)

🧊 Shelf-perfect footprint (Bambu box sized) for clean, modular storage

🧩 Stackable design to build a tidy wall of filament

💧 Moisture control ready with desiccant kept close to the spool

🌡️ Standard round hygrometer mount on the front (variant dependent)

🎨 Optional swatch tile slot so you can label what’s inside at a glance

🧰 No hardware required (print, fill, load, close, stack).

Optional: I use a tiny dab of glue around the hygrometer (and the swatch magnet) so everything sits snug and the hygrometer opening seals nicely. Totally optional, but handy if your fit is a touch loose.

The front supports a standard round hygrometer, and there’s an optional slot for a filament swatch tile.

👉 Swatch model: Filament Swatch with Label and Transparency Test 

(this one includes the 10mm hole for the magnet)

I use these shelves, which print beautifully:

👉 Filament Rack System (Spool & Filament Holder)

Thanks to @printerly!

Variants

Choose the front style that suits your setup:

🔹 Standard – Hygrometer + swatch slot

🔹 No Swatch – Hygrometer only

🔹 Minimal – No hygrometer, no swatch (fastest print and cleanest front)

All variants share the same core v2 design, so you can mix and match without breaking your storage system vibe.

How to use

1. Choose your path:
   1. v2.1 profile: Pro Gasket + taller latches.
   2. v2 profile: standard build, no Pro Gasket.
2. Print the box + lid (supports only needed for the hygrometer cut-out, if applicable).
3. If using v2.1: print the Pro Gasket (TPU) and the v2.1 taller latches.
4. Add silica beads to the desiccant area.
5. Insert your spool.
6. (Optional) Insert your hygrometer and/or swatch tile.
7. Close the lid, snap the latch, and stack.

That’s it. Airtight, compact, and pleasingly organised.

Print notes

✅ Tested with: PLA, PETG-HF, TPU

📦 Typical RH: 10–30% depending on beads and environment

🧪 Other spools may fit but haven’t been fully tested yet

Modular roadmap (coming soon)

The plan moving forward is to make the internals more modular while keeping Version 2 as the standard size:

• Ability to remove the three corner desiccant containers
• Add an optional centre desiccant container
• Future upgrades will be designed to stay within v2 dimensions, so anything you print in v2 now remains aligned with upcoming modular parts

Change log

v2.2

• Embedded swatch magnet
• Rebrand to SnapStack

v2.1

• Added Pro Gasket (TPU) for improved sealing
• “GT Stripe” contrast effect when gasket is black and box is printed in another colour
• Added new taller latches to accommodate gasket thickness
• Drop-in upgrade for v2: box + lid unchanged, print gasket + latches only

v2.0

• Major redesign: hinged lid + snap-lock latch
• Thicker/stronger outer body for stacking
• Improved consistency vs friction-fit lids
• v2.x not compatible with v1.x parts

v1.1 (legacy)

• Remains available for anyone expanding an existing v1.x set (see v1.1 listing for notes)

Foot Note

Huge shout-out to the Bambu Lab community 💛🧡

This model exists because you legends kept poking it (politely) until it got better. Version 2 is a direct result of your feedback, especially around the lid experience. If you print it, I’d love to see your setups and hear what you’d want next. Drop photos, tweaks, and “what if…” ideas in the comments and let’s keep evolving it together. 🚀🧰