I am putting wood planking in my living room. Some of the planks will butt
against the fireplace hearth, which consists of petrified wood set in
mortar. The area where the stones meet the concrete pad is very irregular
due to the irregular shaped stones. The floor is a concrete pad.

For a neat installation and in order to provide for some expansion, I will
need to undercut the fireplace hearth by 1/2" so that I can slip the ends of
the planks under the stones.

http://tinypic.com/view.php?pic=48zmrsh

I have a 4" electric grinder. Will that be suitable for cutting a 1/2"
undercut into the rocks? What kind of blade(s) should I use? I bet this is
going to be a very dusty affair!?

Any advice appreciated

--
Walter
www.rationality.net
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