(wasn't me, it was Nat Phil).
(that wasn't me either)
It would !!
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13 years ago
Hard concrete/SDS U/s
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13 years ago
I know - you can tell by the level of indentation
see above
Wasn't as much as I had expected ;-)
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13 years ago
All I've noticed is a hammer drill won't touch hard concrete, whereas an SDS whizzes through. Same with engineering bricks.
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13 years ago
Could well be a case that the size of the individual impact is the most important factor.... i.e. if 0.1J does no damage at all, then lots of them in quick succession will do multiple lots of no damage. Whereas 2J might make an impression!