I admit that I have not devoted enough time to the art to expect mastery of even some simple processes (hammer control, punching, etc). However, I have found within the past few months that I am gaining some proficiency in making woodworking tools ('crooked' knives to be specific). It's a simple affair by comparison to other bladework, but has served to teach me important aspects of drawfiling, gauging material in comparison to the finished piece, tempering, and so on. Right now, various orders for carving knives are helping pay for my new flintlock (I teach 18th cent. history as a hobby). I am currently entertaining the thought of making knives consistently and making a small business out of it. The trick is marketing though, and I don't know if I'll kick myself in the butt enough to do it.
Like the deceased Mike Ameling, I've been working on various flint striker designs and have had very good luck with them. Now that he's no longer with us, I'm the only one in the (reenacting) hobby making sheet iron pipes (that I know of). I've got a few niches I can fill... Just wonder if I can motivate to do it