Simple questions, from a simple mind: I have just received a new cork block for rubbing out lacquer. One face of the block has square edges, the other face has rounded edges. Which side goes against the sandpaper? Does a new cork block need to be flattened before use? If so, what's the best way? I've always just used wood blocks (or a machine) in the past, but I'm trying to refine the art. Tips? Greg Graham, RPT Brodheadsville, PA
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