Threaded Mason Jar Terrarium – Standard Mouth

This is a custom-designed, watertight base for standard-size mason jars (not wide mouth). Unlike similar models, this one features precision threading for a secure fit. Designed from scratch (not a remix), it offers a reliable seal when printed in PETG, which resists degradation from sun and water exposure. 

PLA is not recommended, as it can warp or crack over time in outdoor or wet environments.

Perfect for DIY terrariums, jarrariums, bug jars, or any project where a sturdy, sealed jar base is essential. The textured grip adds both style and function, making it easy to twist on and off.

Note: This model is not compatible with wide mouth jars. If there's enough interest, I’ll design a wide mouth version.