3D printing
Creality SpacePi X4 Filament Dryer Box — 4-Spool Filament Dryer
Product description
What’s included and basic build: The SpacePi X4 is a dual-chamber filament dryer box that ships as a single enclosure with two independent heating compartments, spool rods, a power cable, a silicone sealing gasket, and an illuminated viewing window. The housing is constructed from molded plastics with silicone seals at the chamber openings and simple internal fixtures to secure spools. Each bay has its own control zone and spool mount.
Capacity and compatibility: Each side accepts up to two standard 1 kg spools (four 1 kg total) or one large 2 kg spool per side (two 2 kg total). The design supports both common filament diameters—1.75 mm and 2.85 mm—so it works with most consumer and prosumer spools.
Heat and drying performance: Each chamber uses a 200 W PTC heater and can ramp to a maximum temperature of approximately 85°C. The independent heaters and active ventilation deliver faster moisture removal versus single-chamber dryers, helping prevent bubbling, stringing, and adhesion problems. Typical drying presets accelerate the process so spools become print-ready in hours instead of days.
Storage and printing behavior: The enclosure is silicone-sealed to reduce re-absorption of ambient humidity and can actively maintain low humidity during short printing pauses. A filament feed aperture with a removable rubber plug and a one-way baffle allow continuous feeding to a printer without breaking the internal environment. An exhaust fan circulates air and vents moisture while keeping noise at a moderate level.
Controls and materials support: The unit features a touch-screen scene UI with selectable drying presets and manual temperature control. Recommended lower ranges (around 50–60°C) suit PLA, PETG, and TPU; higher ranges (80–85°C) unlock processing of tougher filaments such as ABS, PET, PC, ASA, Nylon, and high-temperature nylons. Intended use cases include frequent multi-material printing, filament shelf-life extension, and reducing waste from moisture-related print failures.
Pros
- Two independent drying chambers for simultaneous materials
- Heats to 85°C with 200W PTC elements per chamber
- Silicone-sealed enclosure with illuminated viewing window
Cons
- Fans can be louder when actively venting moisture
- Not a fully sealed climate cabinet for long-term storage
- Some design trade-offs for filament routing and seals
VerdictA strong choice for makers who handle many filaments or engineering materials. The SpacePi X4 combines two independent drying zones, high-temperature capability (up to 85°C), and spool capacity for up to four 1 kg spools or two large 2 kg spools. It speeds drying compared with single-chamber units, preserves filament humidity during pauses, and offers a responsive touch UI with presets. Downsides
Reviews
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K. Benson 5/5
Performs well in humid conditions
It pulls filament humidity down below 20% even during humid weather. Works well with nylon and other hygroscopic materials.
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Travis Chaney 5/5
Simple and effective
Solid filament dryer that’s straightforward to use. Settings are intuitive and it does the job.
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M/G 5/5
Feeds TPU cleanly to the printer
After a few weeks of use it’s been excellent. The independently controlled chambers are perfect when you have mismatched filaments, and the feed ports worked well pushing TPU to my X1C. Even with a few feet of PTFE tubing the TPU ran smoothly and produced good prints (I used Overture 95A TPU).
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Ed Presutti 5/5
Does what it promises
Easy to operate and dependable. The separate left/right controls allow different materials to be dried simultaneously, which I use frequently. I saw marked print improvements on PETG in particular. It isn’t marketed as an airtight cabinet, so I pair it with a dedicated dry box for very long storage, but it performs great as a dryer and short-term store.
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Craig M. 5/5
Handles high temps and multiple materials
I owned a basic dryer good for PLA and PETG, but the X4 handles two different filaments at once and reaches temperatures well above what my old unit could. The enclosure feels sturdy and the controls make selecting drying profiles simple. Highly recommended for anyone running a variety of materials.
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BMomma 4/5
Strong drying, a couple of compromises
I run this alongside an AMS system and it’s been a reliable, efficient dryer. Custom drying profiles and presets make setup quick. The touchscreen is responsive and the unit reaches the high temps needed for hygroscopic nylons and PC. Drying performance is genuinely good, though a few small design choices—seal detail and routing—are trade-offs for the lower cost.
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J. C. Bohman 5/5
Real tool for serious printing
The dual independent zones are the standout feature—you can dry PLA on one side and Nylon on the other at very different temps. Hitting 85°C is useful for engineering filaments that weaker units can’t manage. It’s louder than single-spool setups because of multiple fans, but that’s the trade-off for active venting and faster drying.
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Kbo 5/5
A dramatic upgrade for drying
I already used a SpacePi for printing and hesitated to add this, but the X4 exceeded expectations. Drying is noticeably faster and the extra controls address many small frustrations I had with other boxes. The filament feed port uses a pneumatic-style fitting and the lid includes a tethered rubber plug so you won’t misplace it. An exhaust fan and one-way baffle actively expel moisture with only modest noise—about the level of a low-speed box fan. Overall a solid step up from single-chamber dryers.
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