【ペットボトル潜水艦の作り方】水中をゆっくりと進む [DIY toy] How to make a submarine

It is a submarine made with plastic bottles. It moves quietly like real. Items to prepare PET bottles PET bottle lid × 2 Milk carton paper cup Styrofoam Clip Toothpick rubber band permanent marker Hand drill cutter Scissors radio pliers Glue gun