outofthefire
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ok Col thanks. That does indeed sound straight forward. I guess that if there are a lot of blocks to do it can take quite a while.
Anyone know of a tool/machine to hire/buy that can process these stones to obtain the finished effect that Col has described?
Air chisels can be used but not really for that finish. Once you get the hang of it it is quite a quick process. It would be easier to knock the face of a saw cut block though.