Filament Dryer Box + Hygrometer Mount

This is a simple and practical mount for turning a 4L cereal container into a filament dry box.
It includes two parts:
– a holder for silica gel
– a mount for a small round hygrometer

✅ The setup works perfectly for standard 4L cereal containers – great for keeping filament dry and visible at the same time.

🧊 I also designed a version for rectangular hygrometers – you can find it here:
Filament Box Dryer and Hygrometer Holder – Rectangular Version

🔗 Parts used:

• Cereal Box (4L): Amazon Link
• Round Hygrometer: Amazon Link