How many hours can MUNBYN Laser Engraving Machine work continuously? MUNBYN Williams August 18, 2022 08:06 Updated 24 hours (In a well-ventilated environment). Related articles Why doesn't it work when I have installed the rollers No reaction when engraving clear glasses or mugs Why is my engraving/cutting speed very slow Is it possible to engrave cylindrical surfaces? Can the laser module be replaced? Comments 0 comments Please sign in to leave a comment.