I am from the Midwest USA. Older guy who is into automotive, machining, welding and firearms. I have worked on all kinds of repair projects. Form score boards to water wells. So I do understand safety. I picked up a couple of cheapo lasers to mess with. I have been digging on the forum for several hours yesterday. Nice thread on learning green lasers, but has a lot of old info. (out of business companies) I will post a few questions when I get a chance.