What you’ll need: A empty and cleaned 2-liter bottle 2 tbsp rubbing alcohol 2 tbsp water Bike pump (with an adaptor to fit the 2-liter bottle opening) Safety glasses Step 1) Add both rubbing ...

Rotate and wiggle the bottle to swirl the alcohol around for 10 or 20 seconds to 'encourage' it to evaporate. Insert the pump to form a seal between the poster putty and the neck of the bottle.