Hoʻolālā ʻia nā sila hoʻopau mīkini a i ʻole nā sila kaumaha kaumaha no nā noi rotary ma nā wahi paʻakikī loa kahi e hiki ai iā lākou ke pale aku i ka ʻaʻahu koʻikoʻi a pale i ke komo ʻana o nā media waho abrasive.ʻIke ʻia nā sila hope mīkini e like me nā sila kaumaha, nā sila hope, nā sila lana, nā sila ola, nā sila Toric, a me nā sila multi-cone.