We had acquired the Rock Specimen Grinder for our educational facility. The fully automatic rock specimen grinding machine is one of our university’s prides and joys. The unit is very simple to use and works like a charm. Our primary use for the rock core grinder machine is on cubic cores of 2.5 in diameter. The clamping device secures the core in its place allowing for a clean grind which meets the parallelism requirements according to our facility’s required standards. We use the dry grinding procedure only due to the type of material that we have with above than satisfactory results. Before buying the rock specimen grinding machine we watched a video available on NextGen’s site which gave a clear understanding of how the unit would work in our facility. The unit seems to work even better in person than it does on the video. Our engineers are thrilled to have such a robust precise and easy-to-operate machine in our lab.