Hi All just thought I would give an update on my chinese laser. My laser now has over 2400 hours on it and not a single problem. to say I am impressed is understatement. I use it every day for my business and once I got used to the rd cam and corel 7 it is easy. I engrave glasses, mdf, pine,acyrlic and others with it as well as cutting all of the aforementioned. Well worth the money I paid for it and has paid for itself several times over. One happy chinese laser user.