Mô hình còi tử thần Death Trooper kèm đế

this is the Death trooper model but with a working death whistle inside.

To get the best noise don't scale up or down. Blow at angle and make Shure the is nothing obstructing holes in it.

it works best if you print in two parts then assemble with glue

The inside of the whistle does not need support so make Shure there isn't any 

It prints better if you slow it down by at least 5%