Niphargus trap

This model is a simple, field-tested trap designed for collecting subterranean amphipods, especially Niphargus species, in caves, springs, and flooded mine systems. The design is based on practical field use — minimal parts, easy handling underground, and reliable performance even in low-access environments. Printing notes: Supports required (tree supports recommended) Recommended material: PETG Layer height: 0.2 mm Nozzle: 0.4 mm Important: Cover 1 ×2 (print twice) Cover 2 ×2 (print twice) These parts are used for both sides of the trap.