Mukhozanso kumaliza:
2B etching, Galasi etching, Hairline / No.4 Etching, etc
W zoyendetsera P rinciples :
Izo analengedwa ndi chophimba makina asidi atetezeke kugonjetsedwa pamwamba opukutidwa ndi asidi etching malo osatetezeka. The etching amachotsa wosanjikiza woonda zosapanga dzimbiri ndi roughens pamwamba.