I never had seen or thought about how they laser engrave firearms. I thought this was pretty neato.
https://youtube.com/shorts/Q_krhz66RLc?feature=share
https://youtube.com/shorts/Q_krhz66RLc?feature=share
I used a C02 laser at my awards business (not suitable for metal). The tube started getting weaker at around 12-15 years. I learned that the life of the tube was 20,000 hours, but that's 20,000 hours of existence, not use. So your tube is getting old just sitting there not being used.Laser lights have a limited life span and are very expensive to replace. I calculated the cost of my laser engraver and expected service life and figure that my write off is about $10 to 15 per engraving, depending on size and depth of the engraving. Purely hypothetical, though.