Reply by hhhopks

It just don’t seems to make sense to buy these. They are literallly given granite scraps away for free. You don’t really need a big piece. The big pieces are heavy and they will charge you for them. It is the small pieces that you can get (less than couple square feet). So weight isn’t issue but the small piece should still able to hold the sand paper in place (better than glass?). I guess I’ll give it a shot and not worry about it. Ultimately the end result will determine if it is a go or not. Right?

-- I'll be a woodworker when I grow up. HHHOPKS