ALUMINA
Cutting
Cutting alumina (300μm thick) 
Cutting alumina (390μm thick) 
1mm holes in alumina (200μm thick) 
Alumina (200μm thick) 
Alumina balances (250μm thick) 
Alumina balance detail (250μm thick) 
5mm sqr, alumina (660μm thick) 
Cutting alumina (690μm thick) 
8mm long alumina block (1mm thick) 
Alumina spiral (30μm x 50μm deep) 
2mm holes, alumina (390μm thick) 
4mm discs/holes, alumina (620μm thick)