Enamelling over machine-engraving
To be specific, sterling silver sheet (1.5mm), CNC engraved 0.5mm deep in 0,25mm passes, with a 1.5mm ball-end tool.
10,000 rpm, WD40 for cutting fluid, 50% of normal feed rate (150 ipm)
Heated & pickled 5 times to de-copper the surface, scratch-brushed after each pickle with a glass-fibre brush.
Two coats of wet-packed enamel, fired at 830C for 120 secondsHome | Artefacts| Jewellery