สอบถามสินค้าและบริการได้ทุกช่องทาง With any strategy you end up picking don't forget these very simple: constantly start with a coarse abrasive, then use progressively finer resources until you achieve the desired smoothness. Dremels do the job perfectly If you prefer brief success, a wonderfully smooth or spherical rock, or for difficult rocks https://beediadiamond.com/catalog/polishing-stones