My new ScrapYard knife is great, and will easily shave hair off my arm. However, when I run my finger along the blade (not across it), there's no hint of a cut. Why? If I did that with a razor-blade it would definitely cut, deep! How can the blade be sharp enough to shave hair but not sharp enough to make a little cut? Thanks! -Emt1581 Wanna kill these ads? We can help!