Referee whistle / Police whistle

thingiverse

Here is the rewritten text: Loud whistle that blows with ease even without strong pressure.\nThere are four different whistles available: one with a keyring eye and another without; one with an internal ball to modify the sound, and another without. As per request, a new version features a slightly larger ball (8mm). When printing, ensure good bridging performance to avoid supports. Remove the built-in support for the keyring eye and carefully dislodge the ball from its cavity using a small screwdriver.\nPrint Settings\nPrinter: Raise3D\nRafts: No\nSupports: No\nResolution: 0.1 mm\nInfill: 100%\nNotes:\nFillamentum ABS Extrafill Traffic Black\nExtruder temperature: 235 °C.\nBed temperature: 110 °C.\n15% fan speed, 100% during bridging.\nExtrusion width: 0.4 mm.\nLayer height: 0.1 mm, first layer: 0.2 mm.\n2 shells.\nPost-Printing\nAcetone vapor treatment