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I believe hardness has more to do with scratching than cracking; e.g. plastic is harder to crack than glass, but softer.
by svachalek 14y ago
I believe hardness has more to do with scratching than cracking; e.g. plastic is harder to crack than glass, but softer.
- rayiner 14y agoIndeed, cracking is generally inversely related with hardness. Harder things are easier to crack than softer things.