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You mean our tools that are designed specifically for cylindrical cans wouldn't work as well for cuboids? :)

I agree, but if cuboids were the norm, I'm sure we'd come up with a better tool for them.

Expense may very well be a factor, but if that's the case, I'd expect an article like this to mention it.




> if cuboids were the norm, I'm sure we'd come up with a better tool for them.

Cylindrical cans are a natural fit for a fairly simple tool; I doubt there is anything really comparable for a cuboid.


Have you ever used a key for a sardine can? IMHO easier and simpler.

http://i.istockimg.com/file_thumbview_approve/14389354/2/sto...


Sure, but it still requires the same kind of prescored lid; even with a key, I don't think that general design approach scales up very far while still not being too much of a hassle for consumers to bother with if there are competing products that are more convenient to open.




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