Hello, i have a question about engraving chrome tanned leather. I live in Poland EU and our regulation about chrome tanned leather are quite restricted and they cannot have more than 3mg/kg chrome in leather. But anyway i am afraid about toxicity of this materials, so i wanna ask you, how do handle with this, what about ventilation and another security measures for that purpose. I heard about filters, that reduce all kind of toxicity about 99,9% and not only from leather, but also acrylic, PVC and that kind of stuff. I don't engrave much, maybe 9 hours a week.
Regards
PS. I am talking about laser engraving