I like the material, but I am having a few bugs that need worked out. The main issue is stone sticking to the acrylic really bad, to the point where I am needing to sandblast the underneath and they are not turning out clear.Also, the amount of teeth breaking off are staggering. I have tried great lakes liquid foil and dentaurum isoliermittel separating medium. The results are not good. I asked the tech and he had absolutely no info for pretty much any of the questions I had for him.