This pressure chamber is great for several educational experiments. However there is a certain level of danger involved.
NOT ALL SODA BOTTLES ARE CREATED EQUAL AND A SAFE PRESSURE FOR ONE BOTTLE MAY BE THE RUPTURING PRESSURE FOR ANOTHER. EXERCISE CAUTION AND WEAR EYE PROTECTION WHILE FILLING THE BOTTLES. DO YOUR OWN RESEARCH FOR SAFE BOTTLE PRESSURES.
You will need a soda bottle, a bike pump, the stem from a bike inner tube, scissors, drill bits, a drill, and blue RTV silicone.
Step 1: Cut the Stem.
Cut the Stem off of your bike tube near the base. Leaving a dime sized piece of rubber at the base.