It's possible that the term you mentioned refers to a laser engraving or marking machine specifically designed for metal buttons. These machines use laser technology to etch or mark designs, logos, or patterns onto metal buttons. Laser engraving on metal surfaces offers high precision and can create intricate and permanent markings.
Keep in mind that technology is continuously evolving, and new innovations might have emerged since my last update. If you are interested in the latest information about metal button laser machines, I recommend searching for recent articles, product reviews, or consulting with industry experts in the field of laser engraving and marking.
As of my last update in September 2021, there is no specific technology called a "metal button laser machine" that I'm aware of. However, I can provide some information based on my knowledge up to that point.
Laser cutting is a technology that uses a laser to vaporize materials, resulting in a cut edge. While typically used for industrial manufacturing applications, it is now used by schools, small businesses, architecture, and hobbyists.