Sharpening my lames
A few years ago, I bought a box of single-edge razor blades to use as lames. I would use them for a while, then, when they got dull, throw them out.
Recently, I remembered something I had seen overseas, in a poor Third-World country: my host patiently sharpening his razor blade before shaving.
I pulled out my knife-sharpening stone and sharpened my latest lame (which was approaching the throw-me-out state). Blade now sharp and shiny. Slashes deep and precise.
1000-grit side of stone.