Sunlu FilaDryer S4

Artno.: SN2-300811
GTIN: 6933582300811
HAN: SL-FD-S4-EU-A
Manufacturers: Sunlu

The SUNLU FilaDryer S4 is a large multi-spool filament dryer for up to four 1 kg spools at the same time. With a 35–70 °C temperature range, PTC heating, three-fan system, even temperature distribution, intelligent humidity control and eight filament outlets, it is ideal for print farms, multi-color printing, multi-material workflows and multiple printers. The S4 supports 1.75 mm, 2.85 mm and 3.0 mm filament and enables direct printing from the drying box.

89,99 €

incl. 19% VAT

(75,62 € excl. VAT)

Previously: 99,99 €

100+ On stock
Delivery time: 1 - 3 business days (DE - int. shipments may differ)

Description
Product Reviews

SUNLU MULTI-SPOOL DRYING

SUNLU FilaDryer S4

Large filament dryer for up to four spools at the same time – ideal for multi-material workflows, print farms, multi-color printing, multiple printers and dry filament feeding directly from the box.

Dry four spools at once and print directly from the box

The SUNLU FilaDryer S4 is a large-format filament dryer for users running multiple materials, colors or printers in parallel. Instead of drying individual spools one after another, up to four 1 kg spools can be prepared at the same time and fed directly from the drying box during printing. This saves time, reduces material changes and helps process moisture-sensitive filaments cleanly and repeatably.

Multi-spool drying for productive 3D printing setups

The S4 combines a large drying chamber with PTC heating, air circulation and intelligent humidity control. Temperature is distributed evenly inside the chamber, while filaments can be routed through multiple outlets directly to one or more printers. This makes the FilaDryer S4 especially useful for AMS/MMU-style workflows, print farms, prototyping, production jobs and workshops with frequent material changes.

Up to 4× 1 kg spools

35–70 °C

PTC heating

Three-fan system

Intelligent humidity control

For 1.75 / 2.85 / 3.0 mm

4 spools

Up to four 1 kg spools at once

35–70 °C

Adjustable temperature range

±3 °C

Chamber temperature uniformity

8 outlets

Flexible filament routing

FOR MULTIPLE PRINTERS AND MATERIALS

One drying station for multiple active spools

The SUNLU FilaDryer S4 is especially useful in setups where several spools are actively used at the same time. Via the filament outlets and PTFE tubes, filaments can be routed from the box to up to four printers or into a multi-material workflow. This keeps multiple rolls prepared, protected and ready to print.

Print farm

Multi-color printing

Multi-material

Multiple printers

Dry feeding

INTELLIGENT HUMIDITY CONTROL

Automatic reheating when humidity rises

The S4 humidity control can be set so the dryer starts automatically when the humidity inside reaches a defined range. This helps prevent already dried filaments from absorbing too much moisture again during longer standby periods or print jobs. It is especially helpful for hygroscopic materials such as TPU, PA, PVA, PETG or PC.

Highlights

Up to four spools

Large chamber for up to four 1 kg spools, ideal for multiple colors, materials or printers.

Even temperature

Side circulation fans and a bottom heating fan distribute heat evenly inside the chamber.

PTC heating

The powerful PTC heating system supports efficient warm-up and fast filament drying.

Eight filament outlets

Filament can be routed flexibly from the box, practical for several printers or material changes.

Humidity mode

The dryer can start automatically based on humidity and help keep filaments dry.

Triple protection

PTC thermistor, mechanical temperature protection and software monitoring support safe operation.

Technical Data

Product	SUNLU FilaDryer S4
Model	S4-FD
Product Type	Multi-spool filament dryer
Product Dimensions	458 × 218 × 312 mm, including stand height
Carton Dimensions	516 × 278 × 350 mm
Maximum Internal Capacity	450 × 210 × 211 mm
Spool Capacity	Up to 4× 1 kg spools at the same time, depending on spool format
Filament Diameter	1.75 mm / 2.85 mm / 3.0 mm
Temperature Range	35 to 70 °C
Temperature Distribution	Chamber temperature uniformity approx. ±3 °C
Humidity Control	Adjustable humidity range 30–50% RH, automatic stop around 25% RH
Filament Outlets	8 outlets with PTFE routing
Power Input	AC 110–240 V / 50–60 Hz
Rated Power	320 W according to EU product listing
Net / Gross Weight	4.8 kg / 5.5 kg
Color	Depending on version: black, white or grey

Package Contents

1× S4 drying box	Large multi-spool filament dryer for up to four spools
1× power adapter	Power supply for operating the FilaDryer S4
1× user manual	Manual for setup, operation and safety instructions
2× PTFE tube, 100 cm	Long filament routing to the printer
4× PTFE tube, 8 cm	Short filament routing at the outlets of the drying box

Typical Materials

The FilaDryer S4 is suitable for many standard and engineering filaments. It is especially helpful for materials that can absorb moisture during storage or longer print jobs.

PLA / PLA+

PETG

ABS / ASA

TPU

PVA

PA / Nylon

CF / GF compounds

For print farms, multi-material setups and active filament storage

The SUNLU FilaDryer S4 is especially useful when several spools need to be kept dry in parallel and printed directly from one central drying box. This makes it suitable for high print volumes, multiple printers, frequent material changes and organized filament workflows.

Drying note

The ideal drying temperature and drying time depend on the filament type, moisture absorption, spool size and material manufacturer recommendations. At higher temperatures, check whether the spool and filament can tolerate the selected temperature.

SUNLU AT WELECTRON

Welectron provides advice, fast shipping and suitable support for SUNLU filament dryers, filaments, accessories and clean material workflows in 3D printing.

Shipping weight:	5,50 kg

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