This question already has an answer here:

I keep my blocks of same type in big assembled chunks, for easy building and finding bricks, but I am worried, is it safe for them or will they tend to lose strength in some time (years maybe)?

merged by Zhaph - Ben Duguid Feb 14 '13 at 9:45

This question was merged with Does longterm storage in a connected state harm the studs/tubes? because it is an exact duplicate of that question.

  • How did I miss that duplicate?! Sorry. – mcqwerty Feb 14 '13 at 2:30

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