John Jordan, thanks for your comments.

Your comment about modifying one of your scrapers made a light bulb light up. I'm going to buy a set of scrapers, probably modifying the concave one that is probably of little value. I also am going to check the hardness of a bunch of old saw blades that I own - - if they pass the "file test" I think that I'm going to reshape them into a variety of different cabinet scrapers.