Some people may ask; why not use the knife? Have you ever opened a can with a knife in less than 10 seconds, I really doubt it , you have to stab the can to death then work your way around the edges slowly, and you risk to ruin your knifes sharp edge since you need to cut through aluminium, and most important you risk to cut your hand doing it. I think this is a better efficient way.. plus if you don’t have a knife but a kind of sharp object this will work. Save energy and stay safe.
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