Double external threaded adapter

The model in the photos was printed in PLA for demonstration purposes.For long-term use with water, PETG or ABS is recommended. This is a double external threaded adapter, commonly used for faucets, aerators, and plumbing connections.Both ends feature metric external threads (default M22×1) with a straight inner opening. One side includes a shallow hexagonal recess for easier tightening with a wrench.The design is parametric – you can adjust:Thread diameters on each side (for example, M22 to M24)Thread length on each sideMiddle section thicknessInner opening diameterHexagonal recess size and depthDefault parameters:Left thread: M22 × 1 mm step (external)Right thread: M22 × 1 mm step (external)Thread length: 5 mm each sideMiddle section: 2 mmInner opening: 15 mmHexagonal recess: 3 mm deepPrinting tips:Print vertically (threads along Z-axis) for best strength and accuracyLayer height: 0.1–0.2 mm for cleaner threadsPETG or ABS recommended for durability and water contact Boost Me👍