This guy is like they say in Cuba, a real "comemierda".
The last time I went there (Under duress since I was in a rush) I wanted him to cut a peace of glass in a round shape with a 5" diameter. He grunted and complained and said $20 but I am nor responsible if I break it and you still have to pay me. I said reluctantly, OK, since I needed that piece of glass right away. The I see him extending the radius of the cuter to 5". I explained to him that to make a 5" diameter round the radius had to be half of that, in this case 2.5". He looked at me like I was crazy and finally said..."then you do it" So, I set the radius of his cuter to 2.5" he proceeded to cut it breathing heavy and grunting....Oh, did I mention he wanted the money in advance. This was the second and last time I had business with this a..hole. In all honesty I do not know how he stays in business...Do not go there unless you want to be treated rudely and pay too much.