For a work surface, I visited the local granite counter top making place. Found a huge chunk (30" x 15" x 1.5") that had chipped in the corner. They thru it away cause they'd never find a matching piece to reuse it with. It was already polished on top. I think I paid $10 for it and $5 to cut it in half and called it a day.
I use it for everything from checking flatness, to sanding, to a surface for center punching.
Steve
I use it for everything from checking flatness, to sanding, to a surface for center punching.
Steve