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well, that worked... got me thinkin' a bit. All afternoon anyways.

Even dug up an old book, "Handbook Of the Canadian Rockies" and started skimming through it's geology/mineralogy section just to...

Me too! I've got a crappy little wet-saw that for sure could cut a 1 1/2" or possibly even a 2" stone.

I'll keep my eye out next time I'm down to the river.
For what though? Sandstone and...

ha ha ha ... I've sharpened chisels on a concrete floor, and I've got a scraper that I like to sharpen on a sidewalk if the edge gets dinged.... haven't found a sidewalk I'd hone my razors on...