eSUN eBOX Pro Filament Dryer Box

eSUN eBOX Pro is a smart filament drying, storage and feeding box for FDM/FFF 3D printing. It helps remove moisture from filament spools, maintain more stable storage conditions and feed filament directly from a dry chamber during printing. eBOX Pro is especially useful for moisture-sensitive materials such as PA, PA12, PA-CF, PA12+CF, PC, TPU, PVA, PETG, ABS, ASA and other filaments where print quality strongly depends on humidity.

The main features of eSUN eBOX Pro are heating up to 70 ℃, operation time up to 99 hours, touch screen control, real-time temperature and humidity display inside the chamber, and uniform drying with PI heating and a turbo fan. This drying box helps reduce bubbles, popping, unstable extrusion, rough surfaces, weak layer adhesion and other common problems caused by wet filament.

eBOX Pro is not a filament or resin. It is a dedicated 3D printing accessory for filament drying, storage and printing directly from a controlled dry environment. It is suitable for workshops, production, service centers, laboratories, home 3D printing and engineering material workflows.

✅ Key advantages

• Filament drying up to 70 ℃: suitable for PLA, PETG, TPU, ABS, ASA, PA, PC and other materials.
• Drying time up to 99 hours: useful for long drying cycles of moisture-sensitive engineering filaments.
• PI heating + turbo fan: uniform heating and air circulation inside the box.
• 360° surround heating: more stable drying around the spool.
• LCD touch screen: convenient temperature, time and operating mode control.
• Temperature and humidity display: real-time chamber status monitoring.
• Humidity-based operation: when humidity is high, the device increases drying activity.
• Print directly from the box: filament can be fed to the extruder while drying or storing.
• Multiple filament diameters: supports 1.75 mm, 2.85 mm and 3 mm.
• Compatible with many standard spools: maximum spool capacity up to Φ200 × 73 mm.
• Desiccant support: desiccant can be added for better dry storage.

📐 Technical specifications

Specification	Value
Brand	eSUN
Model	eBOX Pro
Product type	Filament dryer, storage and feeding box
Main function	Drying, storage and filament feeding during printing
Product size	305 × 113 × 245 mm
Package size	335 × 130 × 272 mm
Product weight	1096 g
Maximum spool capacity	Φ200 × 73 mm
Supported filament diameters	1.75 mm / 2.85 mm / 3 mm
Heating method	PI heating + turbo fan
Maximum temperature	70 ℃
Time range	1–99 hours
Heater power	64W
Input power	AC100–240V, 50/60Hz
Power output	DC24V~2.7A
Operation mode	Touch screen
Displayed parameters	Temperature, humidity, material, drying temperature, time
Additional function	Desiccant can be added

⚙️ Recommended Drying Parameters

Material	Temperature	Time
PLA / PLA+	45–50 ℃	5–10 hours
PETG	45–50 ℃	5–10 hours
PVA / PVA+	45–50 ℃	5–10 hours
ASA	50–55 ℃	4–5 hours
TPU	50–55 ℃	4–5 hours
HIPS	50–55 ℃	4–5 hours
PA / Nylon	60–70 ℃	4–12 hours
PC	60–70 ℃	4–12 hours
ABS / ABS+	60–70 ℃	4–12 hours
TPU-64D	60–70 ℃	4–12 hours

For engineering materials where the filament manufacturer recommends drying at 70 ℃ for more than 12 hours, eBOX Pro can be used as a long-duration drying box with operation time up to 99 hours. Always follow the TDS or product-page recommendations of the specific filament.

How eSUN eBOX Pro works

eBOX Pro heats the chamber and helps remove moisture from the filament. It uses PI heating and a turbo fan to improve air circulation. The screen displays real-time chamber temperature and humidity, while the user can set material, drying temperature and drying time.

When the temperature reaches 70 ℃, the device intelligently reduces power to maintain a stable temperature. If chamber humidity is above 20%, eBOX Pro increases drying activity; when humidity drops, drying power is reduced.

Suitable materials

• PLA / PLA+: helps restore print quality after storage in humid conditions.
• PETG: helps reduce bubbles, stringing and unstable extrusion.
• TPU: especially useful because flexible materials often absorb moisture quickly.
• PA / Nylon: one of the most important materials to dry because nylon is moisture-sensitive.
• PA-CF / PA12+CF: suitable for engineering composites that need stable feeding of dry material.
• PC: helps prepare material before printing strong and heat-resistant parts.
• ABS / ASA: useful for stable printing of technical and automotive components.
• PVA: should be stored and printed dry because it is highly moisture-sensitive.

When a filament dryer is needed

• The filament pops or crackles during printing.
• Bubbles, craters or rough texture appear on printed surfaces.
• Extrusion becomes unstable.
• Stringing increases noticeably.
• Layer adhesion becomes weaker.
• The spool has been stored open for a long time.
• PA, PA-CF, PC, TPU, PVA or other moisture-sensitive materials are used.
• Engineering parts must be printed with repeatable quality.

Printing directly from the box

eSUN eBOX Pro can be used not only for pre-drying, but also for feeding filament during printing. This is especially important for nylon, TPU, PVA and engineering composites: the material remains in a drier environment instead of sitting open near the printer.

For stable feeding, place the box correctly near the printer, avoid sharp filament bends and make sure the spool rotates freely inside the chamber. For rigid materials, keep the feeding path as straight as possible.

Spool compatibility

The maximum spool size for eBOX Pro is Φ200 × 73 mm. This fits many standard 1 kg filament spools, but oversized, extra-wide or heavy spools should be checked before purchase.

The device supports 1.75 mm, 2.85 mm and 3 mm filament diameters, so it can be used with most FDM/FFF 3D printers.

Usage recommendations

• Place eBOX Pro on a flat and stable surface before use.
• Check that the spool fits and rotates freely inside the box.
• Select material, temperature and drying time on the touch screen.
• During drying, one silicone plug can be opened to help moisture escape.
• When storing without active heating, keep the plugs closed.
• Add desiccant inside the box to improve dry storage.
• Do not open the lid unnecessarily during heating to avoid temperature loss.
• After drying, keep filament in the dry box or a sealed bag with silica gel.

Benefits for engineering 3D printing

For engineering printing, dry filament is often more important than small temperature or speed changes. Wet nylon, PC, TPU or PVA can ruin print quality even on a well-tuned printer. eBOX Pro helps stabilize the printing process and reduce failed prints when working with expensive technical materials.

The box is especially useful for mechanical parts, automotive components, electronic housings, industrial fixtures, functional prototypes, cosplay elements, props and decorative models where stable extrusion and repeatable quality are important.

🛡️ Safety

• eBOX Pro is an electrical heating device and should only be used as intended.
• Check voltage compatibility and use the original power cable.
• Do not use the device in a humid environment.
• Keep the box away from small children.
• Do not touch the internal bottom plate during heating to avoid burns.
• Do not disassemble the device or replace parts with non-original components.
• If malfunction occurs, turn off the device, unplug it and contact service support.
• If the device is not used for a long time, disconnect it from power.

📦 Package contents

• eSUN eBOX Pro filament dryer box.
• Power adapter / power cable.
• PTFE tube or filament feeding parts, if included in the package.
• User guide.

❓ FAQ

 

Does eSUN eBOX Pro dry filament or only store it?

eBOX Pro does both: it dries filament with heating up to 70 ℃ and helps store the spool in a more stable environment. Filament can also be fed directly from the box during printing.

Is eBOX Pro suitable for PA and PA-CF?

Yes. eBOX Pro is especially useful for PA, PA-CF, PA12, PA12+CF and other moisture-sensitive engineering materials. Drying time should follow the recommendations of the specific filament.

Can PLA be dried in eBOX Pro?

Yes. PLA and PLA+ usually use 45–50 ℃ for 5–10 hours. PLA should not be overheated to avoid deformation on the spool.

What is the maximum temperature of eBOX Pro?

The maximum temperature of eSUN eBOX Pro is 70 ℃.

How long can filament be dried?

The time can be set from 1 to 99 hours. This is useful for long drying cycles of engineering materials.

Does eBOX Pro fit 1 kg spools?

Yes, eBOX Pro fits many standard 1 kg spools. Maximum spool capacity is Φ200 × 73 mm. Oversized spools should be checked before use.

Can filament be printed directly from eBOX Pro?

Yes. Filament can be fed from the box to the printer during printing. This helps keep material dry during long print jobs.

Is desiccant required?

Desiccant is not required for heating, but it is useful for filament storage and maintaining a drier environment inside the box.

 

🚀 Why buy

eSUN eBOX Pro is a useful accessory for users who print not only PLA, but also engineering, flexible and moisture-sensitive materials. It helps dry filament, monitor humidity, print directly from a dry chamber and achieve more stable results. This is especially important for PA, PA-CF, PA12+CF, PC, TPU, PVA, PETG and other materials where humidity directly affects print quality.