That saw is a lapidary unit. Diamonds are merely rocks, chuckle. I would look at what is available for lapidary. Then check local rock and gem clubs...
Oak has tannins that will cause iron to rust. Simply put something under the tools. For instance you could make a tray and put a microfiber cloth in...
Neil, I was lucky enough to get a laser along with my Kobra hollowing system and have been using that but any laser that will focus to a small dot at...