In article ,
Mark wrote:
The more difficult - ie harder types of concrete or masonry will
laugh at a hammer drill and masonry bit - you need SDS.

Hmm perhaps you would like to explain to anyone still interested in this
thread from a technical point of view, why this is so ?

I'd go back to watching Playschool if I were you.

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*OK, who stopped payment on my reality check?

Dave Plowman London SW
To e-mail, change noise into sound.