Wow, that is really cool. CnD and I have just tried/begun flint knapping. It's really hard. I'm sure using rock would be harder.

That saw looks really well done. Looks like it would make some great notches.

I have a question about making cordage. I've been trying to use fresh big leaf maple sapling bark and some sort of long tall nettle like plants to make cordage. However, I don't have the luxury of placing them under a long stream or water for several hours/days/weeks to expose the fibers. Do you know any other way of extracting the fibers with out soaking them? I've tried using a knife and scraping along the the length of the material but that usually destroys it.