Simple Filament Dryer (Filament Box + Holder) - Free 3D Print Model

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Karl Knall

3D Printer>3D Printer Accessories

IP Report

Print Profile(1)

All

X1 Carbon

H2D

H2S

P2S

P1S

P1P

X1E

H2C

H2D Pro

X2D

A2L

0.2mm layer, 2 walls, 15% infill

Designer

2.9 h

1 plate

Open in Bambu Studio

Boost

Released

Bill of Materials

Maker's Supply Kits and Parts

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Circular Embedded Electronic Digital Thermometer Hygrometer

Bambu Filaments

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Dark Gray (33103) / Filament with spool / 1 kg

PETG HF

Description

This project turns the original 1 kg filament cardboard box into a simple drying chamber and uses a 3D printed holder to keep everything stable on the printer bed and to mount a round hygrometer at the front. The holder also ensures the cardboard box does not sit directly on the build plate, creating a small gap and helping to reduce direct contact/heat exposure.

You modify the box (cut the bottom, cut a hygrometer hole, add ventilation holes), slide the spool in, close the lid, then place the whole unit on your 3D printer’s heated bed. In general 60–70 °C works as a practical target depending on the filament.

Print Material: I printed the holder in PETG, because it handles higher temperatures better than PLA.

No Supports needed

Parts Needed

1× 1 kg filament cardboard box (the one the spool came in)

1× 3D printed holder (this model)

1× round digital hygrometer ( Linked Bambu or this one https://amzn.to/4jrOs6b )

Instructions

1) How to Prepare the Box

**Trim the bottom of the box:** Cut off the lower part so the box becomes shorter, but the lid can still close properly.

**Mark and cut the hygrometer opening:** Mark the circle and cut it **~4 mm larger** than the hygrometer so it fits easily. Then **add ventilation holes:** Make a few small holes/slits in the **top** of the box (e.g., with a screwdriver).

2) Assembly

Place the modified filament box into the **3D printed holder.** Insert the **round hygrometer** into the front opening and slide the spool in **from the front**. Close the box.

3) Usage (Drying)

Put the complete unit on the printer’s **heated bed** and set bed temperature to **~60–70 °C** (adjust for your filament).Monitor humidity/temperature on the hygrometer during drying.

Important

Do not leave the box unattended. Especially during the first runs, check the cardboard regularly (softening, warping, discoloration, smell). If anything looks off, stop immediately and lower the bed temperature.

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License

This user content is licensed under a Standard Digital File License.

You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.