หินน้ํามัน หิน ขัด แม่พิมพ์ Fundamentals Explained
Rock polishing is the process of transforming rough rocks into smooth, polished stones. The procedure entails using a rock tumbler, a equipment that spins a container stuffed with rocks, grit, and h2o.When cleansing rocks employing any of those techniques, keep in mind that the tip goal is to arrange the rock for polishing. A clean and smooth surfa