How To Make Pressure Cap for Exploding Pop Bottle BB Gun Targets @BillGilmour519

Uploaded June 2017 | Updated September 2026, 1 week ago

This is how to make a cap for a 2 liter pop bottle that allows you to pressurize it with a bike pump or compressor. When shot with an air rifle or BB gun, the bottle explodes. The pressure cap is of course reusable. You may have seen these in other videos and you can purchase these online but they are simple and quick to make yourself.

How To Make Pressure Cap for Exploding Pop Bottle BB Gun Targets

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$How To Make Sodium Silicate (Water Glass) It is fairly easy to make sodium silicate and I use it for refractory purposes. It is expensive locally so I began to make my own. In this video I use silica gel cat litter and liquid lye sold locally as BBQ cleaner. You can use lye crystals (sodium hydroxide) and silica gel from the dry packets that come with electronics. The usual mix is 200 gm lye and 300 gm silica gel with maybe 100 ml water. Note that mixing lye crystals into water liberates great heat. Add lye slowly with stirring when making a lye solution. Use gloves, eye protection, and good ventilation.$

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