Well, I just tried a pointed bit from a pneumatic chisel which I have used for breaking up concrete. Not too sure of the final force but must have been close to the 8 tonnes again but I bottled out. The chisel bit became blunted, started to compress and deform over to one side. The Nanoflex however, was virtually untouched, it had a mark on it of an estimated few thou deep and no deformation.
Okay, what else shall I throw at it?
Paul
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