Mastering rock polishing techniques demands an knowledge of rock Qualities and the proper resources. ออกแบบหน้าบ้านสวย และปลอดภัยด้วยกระเบื้องปูพื้นไม่ลื่น Fill barrel ¾ full with stones and shake to settle. Tend not to use much less, it will not likely perform as there's no tumbling motion Unless of course the barrel is filled sufficiently. https://beediadiamond.com/catalog/polishing-stones