5-10 days
Payments
Description
Description
PolyDryer™ Box XL: Sealed Storage for Large Filament Spools
Superior Sealing Performance
PolyDryer™ Box XL features a high-integrity sealing design verified through water leakage, smoke leakage, and long-duration humidity testing. It delivers sealing performance comparable to the standard PolyDryer Box with no degradation despite its larger internal volume.
Print Without Breaking the Seal
The integrated filament feeding system lets you print directly from the sealed box. Filament routes through sealed airlocks, maintaining the sealed environment during the entire print. No more opening your storage every time you start a job.
Always Know Your Filament's Humidity
A built-in hygrometer provides real-time humidity readings, and the included color-changing silica gel desiccant (up to 110g) gives you an instant visual check on moisture levels inside the box.
Built for 3kg Spools
Designed for spools up to 3kg (Ø300 × 118mm), Box XL reduces spool changes and keeps printing workflows smooth — ideal for print farms and heavy users running large-format or long-duration jobs.
User-Centered Design
Easier to carry with an integrated handle, easier to load with a design built for heavy spools, and easier to open with a new latch system. Box XL is built around real user feedback.
Part of the PolyDryer™ Ecosystem
Box XL integrates with the PolyDryer Dry Dock via an optional Dock Adapter (sold separately) for active drying capability. Compatible with 1.75mm, 2.85mm, and 3.00mm filament diameters.
PolyDryer™ Mods and Add-ons:
(Modifications may affect the safety and performance of the PolyDryer™)
Printables, MakerWorld
3D Printable XL Adapter:
You can download and print your own PolyDryer Box XL adapter on Printables or MakerWorld
Note: Due to the heat created during the drying process, it is recommended to print this adapter in ABS/ASA or other similar high heat deflection temperatures.
Printing Requirements
Print Settings
Print Settings
Frequently Asked Questions
Got questions? We've got answers. From choosing the right material to caring for your spools, here's everything you need to know in one spot.
Is PolyDryer™ Box XL a filament dryer?
Is the Adapter included in the PolyDryer™ Box XL?
Does the XL provide the same drying performance as the smaller Box + Dock setups?
What filament sizes does it support?
Why choose the XL Box over the standard PolyDryer Box?
Can I use the Box XL without the Dry Dock?
Customers praised this XL drying box for its excellent build quality and thoughtful design for large 3kg spools. Shoppers noted "spins smoothly" and "stays at low humidity." One customer mentioned the seal doesn't fit perfectly on the dryer. Overall highly rated for handling oversized spools effectively.
One of a kind - and worth it.
This is the only storage solution I have found for 3KG spools with the added benefit being able to dry/maintain in the box.
I made an excellent choice with this buy!
Same drying power, but for the thicccc ones
Does exactly what it should !
These are well built!
3Kg spool spins smoothly inside the box and box stays at low humidity
It does not seal good on the dryer so minus 1 star
Thoughtful design for 3kg spools
Fits the 2.5kg Siraya spools perfectly, which is what I wanted it for
Is the spool mount just a plastic cylinder or does it spin on bearings?
The standard box comes with both options for a center cylinder or bearings to roll on, but the larger box only has the center spool holder option.
