Nice simple design, and quick to print. I will be making more of these for family members who spend time outdoors. These are loud and no moving parts! Not advised to blow inside the house, especially with pets who may startle easily. When testing outside you may want to block your own ears. Perfect for an emergency/survival whistle - Res. 0.2, no supports needed if placed on the build plate as shown in the photo. Hatchbox PLA Orange,