Hapstone Polvere per Pietre Acquaforte 100g (0,2ib) + Spedizione Gratuita
Etching Abrasive Stones with Ferric Chloride (FeCl₃). • Light etching: 15–20 minutes. • Deep etching: 30–40 minutes. After Etching Add the ferric chloride powder. Only for stones removed from the blank.