This is a remix of the excellent Eppendorf tube holder originally designed by uranium235. The original design was intended for larger microcentrifuge tubes; this version has been resized and adjusted specifically to fit standard 0.5 mL microcentrifuge (Eppendorf) tubes.

The rack holds 18 tubes in a 6×3 layout while maintaining the original design's compact footprint, low material usage, and fast print times.

Features
-Designed for 0.5 mL microcentrifuge tubes
-Holds 18 tubes (6×3 arrangement)
-Deep lower wells help keep tubes securely seated
-Drainage holes prevent liquid accumulation
-Low filament usage and quick print times
-Modular leg design with friction-fit assembly

Printing Notes
The leg and socket dimensions were inherited from the original design and should provide a firm friction fit with most PLA filaments. The design has been tested with materials similar to Bambu Basic PLA, Bambu Matte PLA, and PolyTerra Matte PLA. Depending on your printer calibration and filament, minor scaling adjustments may improve fitment.

Credits

Full credit to uranium235 for the original Eppendorf Tube Holder design that this remix is based on.

Original model:
https://makerworld.com/en/models/417346-eppendorf-tube-holder-6x3

If you find this remix useful, please consider supporting the original designer as well.