Well it's a single element lens. Its laser beam becomes gradually wider so I don't think it's good for burning. You should look for lenses on ebay (m9*0.5 fit in the laser) and maybe start a new thread if you have more questions. But I think this one would work for burning. https://www.ebay.com/itm/445nm-465n...216045374&_trksid=p2056116.c100935.m2460#rwid