Thread: I Found It Over There

Originally Posted by Bram

I have to say, I love reading this Thread! Does anyone have a nice source on geological information? maps with what type of rock is where, that sort a thing

as a climber I see lime-, sandstone and granite, but I don't think those are going to work :P

Have you considered the USGS? Welcome to the USGS - U.S. Geological Survey

Of course it's not easy to navigate the massive dotgov site (never is). I found maps of my area somewhere--shows maybe 7 shades of colors for my state, then the KEY for reading the color-coding is only 150 colors long with 27 shades of yellow, green, etc. Impossible to quickly determine anything.

I too would be interested in more "sharpening stone learning" but it appears to be a tiny side-show of the grand geological interests.

I'm not sure how to get back to it, but the multi-part work by the modern sellers of coticule is a good in-depth read.

It's kinda simple as i understand it. Find rock, slick off one side, test rock. Just have to find the right density of cutting particles of the right size held together tight enough but not too tightly by the rest of the rock, with good purity.

Simple, not easy. But the more of us there are poking and scratching around out there, the more likely it is we hit on something. Not likely to be a world market concern, but maybe a lifetime supply for a fella and his pals and possibly others who are brave enough to slap razor to wild-caught stones.

Here's something i surfed up: http://lumberjocks.com/Daren/blog/2835 (the forum version same guy, with discussion: http://www.woodworkingtalk.com/f11/s...ake-them-2411/)