Ukwelashwa okungaphezulu kokufakelwa kuthinta ngqo ukuhambisana kwayo nezicubu zomuntu. Sisebenzisa izinqubo ezihlukahlukene zokwelashwa kwendawo, njengokupholisha i-electrolytic, sandblasting, laser processing, njll., ukuze sithuthukise ukuhwayela kwendawo, ukumanzisa kanye nezinye izici zokufakelwa. Phakathi kwazo, i-electropolishing ingathuthukisa kakhulu ukuphela kwendawo, inciphise ukugxilisa ingqondo, futhi inciphise ingozi yokutheleleka; i-sandblasting ingakhuphula ukuhwalala komhlaba futhi ikhuthaze ukukhula kwezicubu zamathambo.