I tend to believe that is just what happened. Looking at other blades, it appears that the bottom side of the hole does the cutting. This one is ground flat. Probably from the factory. Anyway, I am currently awaiting another blade, this time from Tandy. It will fit the handle. Once I get a bit better at my work, I'll buy some good tools.Thanks everyone for the help. That's what I like about this site, ya'll are just plain friendly!