The Survival whistle is very noisy, around 116dB, its easy and fast print, 21minutes with 0.2 layer or 15minutes with 0.3 layer,  and less 4 grams. If you need a good whistle and fast print this is your model, super easy and extremely loud for this size 42x20x7mm. Im used a free web app calculator ( https://whistlemaker.com/calculator/ )

No need supports, im used 15% infill. 

Thanks!

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