agh. took several tries- the right side channel air splitter piece kept getting small stringers between the splitter and the walls of the channel. I had to scale it up to 110% and print SLOW SLOW SLOW. 100% fill, glow in the dark PLA.
final product finally took a while cleaning up with a dental pick. either way, its LOUD! Thanks man this is great. I plan to print out several of them and keep with my camping gear