I am a big fan of natural stones for honing. I love my BBW, Coticule, and Chinese finisher! Are there any lower grit natural stones out there that can be used for setting a bevel? At least any that are reasonably priced. I would love to be able to use one to set the bevels on my razors. What did they do in the old days, to set bevels, before the 250/400/1k grit man-made stones came along?