Silica gel dryer |Easy drying of the desiccant 24V

This compact silica‑gel regeneration machine is designed for makers who want to keep their filament dry and printing quality high. Silica gel gradually loses its effectiveness as it absorbs moisture from the environment. With this device, you can regenerate your silica beads safely, efficiently, and with precise temperature control — no oven, no microwave, no risk of overheating.

 

The system uses a digital temperature controller to heat the silica beads to the ideal regeneration temperature. The perforated 3D‑printed drum ensures even airflow and consistent drying, while the compact housing keeps the heat where it belongs. Perfect for anyone who uses silica gel in filament dry boxes, storage containers, tool drawers, or electronics enclosures.

 

Why This Project Exists

3D‑printing enthusiasts rely heavily on silica gel to protect filament from humidity. But desiccant needs regular regeneration to stay effective.
This DIY project gives you:

• A low‑cost alternative to commercial regeneration devices
• Accurate temperature control for optimal drying
• Safe operation without exposed heating elements
• Modular, repair‑friendly design
• A practical solution for anyone using large amounts of silica gel

🔧 Non‑Printed Parts 

• I ordered all the parts I used from Bambu Lab or AliExpress. You can find the links below under Materials for Bambustore.
• The assembly video shows the individual parts as I install them.

AliExpress (I live in Germany and can only post "de" links for AliExpress. Please check that you are selecting the correct item for your country) :

1. Drum Motor - 24V - 10 Rpm 

   https://de.aliexpress.com/item/1005009551792416.html?spm=a2g0o.order_list.order_list_main.5.496a18029XckMO&gatewayAdapt=glo2deu

2. AC Adapter 230 Volt / 24 Volt 10 A with 5,5mm

   Power Supply Adapter 220V AC DC 5V 6V 8V 9V 10V 12V 13V 15V 24V Universal Charger 1A 2A 3A 5A 6A 8A 10A EU US For LED Driver - AliExpress

   Note: I've noticed that these cheap AliExpress power adapters don't always deliver their full power. This one is rated at 240 watts, while the heater only uses 80 watts. With a 150-watt heater, the power adapter kept shutting down due to overload.

3. Heater 24 Volt 80 Watts / and 24V ventilator

   Insulated 220V 12V 24V 50W~200W PTC Fan Heater Insulation Constant Temperature Electric Heater Space Heating Element Incubator - AliExpress 6

4. Temperatur sensor 24 Volts

   10A 12V 24V 220VAC Digital LED Temperature Controller XH-W3001 for Arduino Cooling Heating Switch Thermostat NTC Sensor - AliExpress

5. Power Switch with LED 12 Volt

   4Pcs 3Pin KCD1 Mini Rectangle Rocker Switch 21x15mm Panel 13x19mm Indication LED 12V 220V illuminated Seesaw Switch Power ON-OFF

6. Motor Speed Controler

   1-10PCS Mini 5A 90W PWM 12V DC Motor Speed Controller Module DC-DC 5V-35V Adjustable Speed Regulator Control Governor Switch 24V - AliExpress 502

7. DC Jack 5,5 mm

   https://de.aliexpress.com/item/1005007132896015.html?spm=a2g0o.order_list.order_list_main.26.496a18029XckMO&gatewayAdapt=glo2deu

8. 680 Ohm Resistor

   100PCS 1/4W Metal Film Resistor 0.25W Power Resistor0.1~1M 2.2 3.3 4.7 10R 100 200 220 360 470 680 1K 2.2K 10K 47K 22K 100KOhm - AliExpress 502

Print Settings

• Material: It must be printed from ABS, otherwise it will warp.
• Layer height / Wall thickness:  Print with my settings as specified in the 3mf file and everything will be fine.
• Supports: There are very few supports.

Boost MeEvery boost helps me build more awesome things like this machine.

 

If you need more information, don't hesitate to write to me and I will get back to you.

 

Assembly Video: