This 3D‑printed holder is designed to stabilize both 1.5/2 mL and 5 mL Eppendorf tubes on a precision scale. It comes in two variants: a straight upright version for standard weighing and a 22.5‑degree angled version that makes pipetting and transferring chemicals easier inside the confined glass cage of high‑accuracy balances. The side walls feature a subtle inward curvature that improves grip when placing or removing the holder. It prints reliably in virtually any common material, and its gently sculpted geometry gives it a clean, slightly stylish look while remaining fully functional :)