Howdy, I like your work and have some of the same questions about finishes. I have started making shields and other stuff for the guys around my area. I will let you know what I learn. I don't plan on getting big into the business, it is a fun hobby and I want to keep it that way. If you don't mind me asking, what do you charge for your shields? I have been charging $75.. I think they could probably sell for more, but are trying to keep them affordable.