Why is it good to “rough up” a surface to be glued? Wouldn’t a smooth surface give the best adhesion?

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Why is it good to “rough up” a surface to be glued? Wouldn’t a smooth surface give the best adhesion?

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Anonymous 0 Comments

If you have two perfectly smooth surfaces – yes, that’s best. But since you typically don’t, making a uniform roughness improves adhesion. Typically, of course it can vary between materials.

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