pop cans crush false - Newest Crusher, Grinding Mill . Step One: Find an empty pop can and fill it with a three tsp. of water. . 1:25 Soda Can Crush and De-Crush Trick by taofledermaus 28,164 views Crushed false bottom - Page 3 - Home Brew Forums Yes, an actual measured 10psi of suction when applied to the bottom of a false bottom will crush it. . 3 psi is 3 psi whether it's in a 2" pop can or .