Hi everybody, I have been experimenting with using sandpaper to sharpen chisels. I've been starting on the grinding wheel to establish an angle, then using a Veritas Mk II angle guide with varying grits of sandpaper. I have been able to get a very sharp edge using this method, but I seem to blow through the sandpaper _very_ fast. It seems like I only get a few minutes of use before the grit is worn off.
I'm using the "wet/dry" sandpaper available at auto parts stores - no water or oil. I've read about silicon carbide sandpaper, and I think that's what I'm using, but the packaging doesn't specify.
Has anyone been getting better longevity out of sandpaper, and if so, what brand/technique are you using?
I have tried a waterstone, but the thing didn't stay flat for very long. What is an inexpensive way to flatten a waterstone?
TIA,
Mike