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US$100.00
DIY filament dryer for 4 spools controlled by iDryer Controller V2 with precise heating up to 110°C. Air from the heater is only 5–10°C hotter than the target — it reaches the spool uniformly heated without local overheating. Load cells in each slot weigh the spool in real time and notify you when filament runs out. BME280/SHT31 sensor monitors humidity: when the desired level is reached, iDryer automatically switches to storage mode and vents the chamber via servo-driven damper. 30 mm PIR board housing conserves heat — average 1.2 kWh per month at 24/7 operation. Assembly takes 6–8 hours.
iDryer X4 — DIY filament dryer with precise heating up to 110 °C, humidity control and weight monitoring for each spool. Heats smoothly, without thermal shock to the plastic. Set it and forget it.
PLA stringing. PETG bubbling. PA doesn't reach rated strength and cracks in the nozzle. The spool looks normal on the surface, but the print is already ruined before you start. Simple heating isn't enough. Moisture must not only leave the plastic but also exit the chamber. If wet hot air stays inside, drying slows down and becomes unpredictable. Ordinary dryers overheat filament, the best ones have active ventilation — build your iDryer and get the best: ventilation, minimized local overheating, active drying. This is exactly where iDryer sets the standard since 2024, providing users with the best drying and printing quality.
Since iDryer appeared, ventilation became the standard for the best dryers. In iDryer it's built into the drying logic: a servo opens the damper exactly when the chamber needs to release humid air, and closes it when circulation is enough. Not a feature — it's the mechanics of the process.
The delta between the heater and target temperature is just 10–20 °C depending on desired heating speed. Air leaving the heater is only 5–10 °C hotter than the target. Actively mixing in the chamber, it reaches the spool evenly heated without thermal shock. The physical and mechanical properties of the filament are preserved.
The BME280/SHT31 sensor is installed just below the middle of the spool, right above the heater. It measures the actual temperature and humidity in the plastic zone, not at the cold wall of the chamber. The controller sees the real picture and doesn't allow local overheating even at high set temperatures.
Most dryers have an ordinary thermostat inside: heater turns on, overheats, turns off. In iDryer, the controller gets thermistor readings at least 5 times per second and continuously manages heater power. No temperature spikes, no overheating — smooth and precise heating.
PID controller and thermistor maintain precise temperature. PLA, ABS, PA, PC, PETG, PP, POM and others.
Load cell in each slot. Tracks weight and alerts you when plastic runs out.
BME280/SHT31 sensor + damper servo. Auto-switching to storage mode at the right humidity.
Code on GitHub, presets for popular materials, ability to customize for your needs.
30 mm thick walls of polyisocyanurate foam — one of the best building thermal insulators. The chamber retains temperature with minimal losses: on average 1.2 kWh per month under continuous 24/7 operation. Panels are cut on a CNC machine — the housing fits perfectly, with no gaps.
An hour — assembling the controller. 30 minutes — gluing the housing. 12 hours — sealant dries. An hour — final assembly and connection. An hour or two — startup and first launch. Step-by-step instructions at docs.idryer.org, questions in the iDryer Telegram community.
Step-by-step instructions, diagrams and firmware are at docs.idryer.org. Questions in the iDryer Telegram community.
