Comgrow 3D Printer Filament Dryer Box — 1.75/2.85mm Spool Capacity, 40–50°C Timed Dehydrator

Comgrow 3D Printer Filament Dryer Box is a temperature-controlled dehydrator and sealed storage that keeps 1.75mm and 2.85mm PLA, ABS and specialty filaments dry during printing.

If your prints suffer from bubbling, poor layer adhesion or snapping filament, trapped moisture in filament is often the cause. The Comgrow filament dryer box combines low-temperature heating, a tight-seal enclosure and a spool passthrough so you can dry and feed filament directly to your printer without re-spooling or exposing stored material to ambient humidity.

How does the dryer box prevent filament moisture problems?

The unit heats the internal chamber gently (40–50°C) to remove absorbed water from filaments and maintain a dry storage environment while printing. Continuous low heat plus a sealed outlet reduces the chance moisture re-enters the spool during use.

• Adjustable temperature range: 40°–50°C to suit PLA, ABS and silk blends.
• Timed drying cycles: set between 6 and 12 hours depending on filament condition.
• Sealed lid with snap buttons and silicone cable sheath to limit humidity ingress.

Can I print directly from the box and how is feeding set up?

The dryer box supports direct feed through a smooth outlet using a Teflon tube and silicone sheath so your spool stays protected while filament runs to the printer. Place the spool so it unrolls counterclockwise for best feed; the bottom pulley helps guide filament smoothly.

• Filament passthrough with Teflon tube for low-friction feeding.
• Counterclockwise spool placement improves pulley feeding performance.
• Outlet plug included to keep unused box fully sealed.

What controls and monitoring are available on the Comgrow dryer?

A clear 2-inch LCD and touch buttons let you set temperature and run time easily; the display shows active work state when drying. If no work mode is selected, the motherboard auto-shuts off after three minutes to save power and avoid unnecessary heating.

• 2-inch LCD screen with touch controls for temperature and duration.
• Work mode must be displayed for the unit to operate; otherwise it auto-shuts down.
• Error indicators (E0/E1) guide quick checks of internal cable connections.

How much filament can it hold and which spool sizes fit?

The interior measures 9.29 × 6.49 × 9.13 inches, accommodating two 1 kg spools side-by-side for most desktop printer setups. It supports standard filament diameters so you can store and dry common materials without altering spools.

• Inner size: 9.29" × 6.49" × 9.13" (fits two 1 kg spools).
• Compatible with 1.75mm and 2.85mm filament diameters.
• Works with PLA, ABS, silk and similar 3D-printing materials.

Who is this for: The Comgrow filament dehydrator is aimed at hobbyists, makers and small-batch prototypers who need reliable, moisture-free filament during long prints or when storing multiple spools. It's useful for anyone encountering print defects caused by damp filament, or for users in humid climates who want the convenience of printing directly from protected spools.