What about using the green ANSI Standard Shade Rated glasses? Uvex has a lens called "Infra-Dura"Yes, didymium is not the preferred glasses for bladesmiths anymore. Most now use AUR 99 glasses from auralens.
http://auralens.net/metalworking-filters
Oh and any software/hardware or machinery I should look into for making knives would be greatly appreciated! I don't mind putting kits together or soldering hardware to save money with kits. Plus he can get student edition software since he is homeschooled.
My boy is asking to make knives on the computer now in addition to the forging. This could keep him busy for a while until he starts asking about Damascus again. 😒