Closed-loop endless diamond wire saw for slicing germanium ingots into lens blanks and wafer stock. The welded wire loop runs in one direction at up to 80 m/s—no reciprocating stroke, so cut consistency holds across the full ingot. Kerf width from 0.35 mm reduces material loss on high-cost Ge. Cutting tolerance ±0.03 mm. CE compliant, with automatic wire-break shutdown and tension control

https://www.opticalcutting.com/germanium-ingot-cutting-wire-saw/