WaPari:

2B etching, Mirror etching, Hairline/No.4 Etching, etc

WorkingPawọn ilana:

O ti ṣẹda nipasẹ titẹ iboju ti o ni aabo acid aabo si oju didan ati acid etching awọn agbegbe ti ko ni aabo. Awọn etching yọ kan tinrin Layer ti alagbara, irin ati ki o roughens awọn dada.