I have been using this to install 60cmx60cm large format tiles during the last month. I had to struggle so much to get the laser pointing straight. It is not properly fitted when illuminating straight (what it is supposed to do). There is also a slight non-adjustable cut that results in non-straight cuts. When cutting 60cm tile, this leads to around 2mm error which is impossible to correct. I hope that Vevor will fix this design error as I read about this error before I bought it. I thought it could have been fixed by the time I bought it about 3 months ago. No, I was disappointed. Yet, for the price I paid, I still got my job done and I am happy with it. But, Vevor has to fix this issue.