Sometimes you don't want to play filament-chicken, but you need to burn through some almost empty filament spools. These plates print one complete whistle at a time. The trade-off is this SEVERELY limits how many whistles you can safely fit on a plate, but if you've got time to babysit plate-changes, these could be helpful.

These plates are mostly stock presets.

• Prusa End-of-Reel Whistles MK4 (3MF)
  • Models Used:
    • https://printables.com/model/394669-loud-and-compact-whistle-for-your-keychain

• Prusa End-of-Reel Whistles MK3 (3MF)
  • Models Used:
    • https://printables.com/model/394669-loud-and-compact-whistle-for-your-keychain