For those of you who feel comfortable making your own carving tools, I saw a tutorial at
www.thecarvingpath.com on making micro tools from music wire. Music wire is high carbon and makes excellent micro tools. Again, this technique is not just grinding a new shape on an old piece of steel, you would have to heat it up (propane torch works well), pound it flat, grind the shape you want, then heat treat it (propane torch and mama's oven). If you can make a knife out of a sawblade, this should not be a problem as you already have most of the skills needed. If you have questions on heat treating, I would be happy to answer them.