SUNLU SP2 Hygrometer Mount

Hygrometer Mount for SUNLU SP2 – Accurate Humidity Monitoring

The stock hygrometer that comes with the SUNLU SP2 filament dryer often gives inaccurate humidity readings.
Why? It sits too close to the included silica gel bucket, which skews the measurement.

To solve this, I designed a minimalistic hygrometer mount that positions the sensor where it actually matters inside the drying chamber, away from the silica gel influence.

Design Details:

Fits firmly over the rubber filament feed-through. (You can use the outer and the middle ones)

The hygrometer slides into the mount and rests neatly against the inner wall of the dryer.

Simple, clean design – easy to print and install.

💡 Note: The fit of the 2 parts is intentionally snug. You may need to gently tap the plug into place with a hammer. I’ve included a small helper tool you can print to assist with this, but a socket wrench head also works perfectly.

Printing with high-temperature materials like PETG, ABS or stronger is recommended!

Result:

More accurate and reliable humidity readings for your drying process.

📸 If you try this mount, please share a picture in the comments!

& If anyone knows, please let me know if this model also fits other types of dryers!