This 3MF uses the 38mm Micro-Bitonal with Half-Height Hole model. Make sure to change the filament and printer profiles to fit your specific machine(s) and settings.
This is a plate of 96. Whistles are arranged 2mm apart.
NOTE: If your printer's first layer isn't perfect, it can cause defects in this model that result in one or both chambers being silent in a significant (>25%) number of whistles. This is not a defect of the model, it is a defect of my (lack of) calibration. Ensure your first layers are perfect before attempting this on any printer that needs manual z-offset adjustment.