4 note whistling arrowhead

print in pla+ these have 4 separate whisltes that produce 4 notes and make an eerie sound. feel free to experiment with the pitch of each whislte by editing the file or fillin the chamnbers with different levels of glue or clay. video below

https://www.reddit.com/r/3Dprinting/comments/tkdt7m/4_note_whistles/