Review on Glass Concrete Grinding Polishing GP15017 by Dale Rylander

I rarely write reviews but felt the need to express my satisfaction with these blocks. I create glass and apoxy micro mosaics and use wet/dry sandpaper for sanding and polishing which would take me HOURS to get the same results as blocks I get in less than 30 minutes! I use all blocks consistently with water and the results are amazing. Because these blocks are so effective, I only grind each piece for about 5 minutes. I will say that I still need to buff with a higher grit polish for a final polish. I wanted to spend over $600 on a grinding wheel and was glad I waited to try it first!