This project includes a test cube created by 3dfor_live; however, any test cube may be used as long as it contains two colors on the same layer. Single-color layers may be interleaved if desired. The intent is to provide a standard, repeatable H2D test that anyone can run using the same filament type but different colors. High-contrast colors (dark and bright) work best for clearly identifying unintended extrusion or spaghetti behavior.

H2D Dual-Nozzle Spaghetti Stress Test Some users are seeing large, unintended filament dumps (“spaghetti”) during dual-nozzle operation — not normal stringing, but full piles on the plate. This test creates a worst-case scenario to help determine whether environment factors (Wi-Fi, USB, I/O timing) may contribute. Both clean prints and failures are valuable data. Test runs ~1 hour, low material cost.