Nevertheless, take into account that coarse grits can damage softer stones Therefore if unsure generally commence smaller prior to moving on to progressively bigger numbers on the grit scale. เครื่องเป่าใบไม้ ดูดใบไม้ ใช้น้ำมัน Continue as ahead of using the similar proportions of grit and h2o but this time use 400 grit. https://beediadiamond.com/catalog/polishing-stones