Aufero 1.0 w/ 5.5W Long Focus Laser Engraver Expired

Not really.. proper ventilation and caution is required for resin printers and laser cutting machines... cutting certain materials with a laser produces toxic fumes. smoke inhaltion from even wood cutting is not good for you - especially if you cut exotic species!

Long focus for deeper cut short for engraving

This^. I'll also add that proper eye protection is mandatory, and I wouldn't trust the cheap ones that these come with. Repeated exposure to even splashback WILL damage your eyes, even if it doesn't show up until years later. Splashback occurs when the laser reflects off of the material you're engraving. It's invisible, you usually can't feel it, and you usually won't notice until a few years later when you're eyes deteriorate (cataracts, etc). I wouldn't recommend an unshielded laser cutter in any room that children or pets are able to get access to. You can build a shielded enclosure to rectify this, but it will more than likely cost more than this engraver. Just some things to think about since most people learn pretty quickly that they need ventilation, but I know plenty of people that ran their lasers without proper eye protection because they didn't know how important it was. It's invisible, you won't feel it, and most people don't read instructions.