Gas Mask Bubbler

Used to screw in a 32mm wide bottle (measured at max thread width) to use as a gas mask bubbler, has SP400/SP415 threads.

Make sure to always use this with someone else, never alone.

Some bottles that work are Head&Shoulders shampoo, Softsoap and Walmart soap refillls. Make sure to clean them out completely and rinse well before modification.

To make a bubbler, take a straw, cut a hole in the bottle just wide enough for the straw, and glue the straw in, then print the appropriate adapter for your gas mask thread and screw it on. Fill it with your desired liquid and done!

Use a sturdy bottle, flexible glue, and a wide mouth straw for best results.
The pictures use a straw from a shampoo bottle, a Walmart soap refill, and hot glue.