whistling mini pot lid

Beercan to cookpot conversion utilizes lids like these ( in metal) to keep out the creepy crawlies and to quicken the boil of water in the container; HIkers and backpackers have been using this configuration because its cheap and very lightweight.

I've added a "sippy" type drink-dam and a whistle to alert you to a boil. The lid shown is a snap on version . It prints in two parts with the outer ring cone up and then glued with a lexan adhesive ( they should be printed in Nylon or Polycarbona