levy

A clean cut through optical glass looks almost polished — no visible marks, no micro-cracks, no chipping at the edges. A bad cut through the same glass looks frosted, has irregular edge damage, and may contain subsurface cracks that won’t show up until the part fails during downstream processing. The material is the same. The

In a traditional wire saw, the wire runs from one spool to another and back — hundreds of meters of wire, reciprocating through the cut zone. In an endless wire saw, the wire is a closed loop. No spools. No reversal. The wire circulates in one direction, continuously, like a belt. That loop — the

±0.03 mm. That’s the cutting precision tolerance on Vimfun endless wire saws — and it’s a number we stand behind across glass, ceramics, quartz, and sapphire applications. But tolerance on a spec sheet and accuracy on a finished part aren’t the same thing. One is what the machine can do under ideal conditions. The other

A 0.5 mm diamond wire running at 60 m/s removes material from a sapphire boule without generating measurable heat at the cut zone. No blade vibration. No thermal stress cracks. Just a clean kerf less than 0.6 mm wide. That’s the core promise of cutting diamond wire — and understanding how it actually works is