Wikipedia
A wire saw is a powered saw that uses a metal wire or cable for cutting. There are two types of wire saw machines: continuous (or endless or loop) and oscillating (or reciprocating). Sometimes the wire itself is referred to as a "blade".
Wire saws are similar in principle to band saws or reciprocating saws, but they use abrasion to cut rather than saw teeth. Depending on the application, diamond material may or may not be used as an abrasive. The wire can have one strand or many strands braided together (cable). A single-strand saw can be roughened to be abrasive, abrasive compounds can be bonded to the cable, or diamond-impregnated beads (and spacers) can be threaded on the cable. Wire saws are often cooled and lubricated by water or oil.
Usage examples of "wire saw".
Inside the handle were matches, a fishing line and hook, and a wire saw.
Booklets, fishing kit, first-aid kit, mittens, compression bandages, snare wire, a wire saw, aspirin tablets, water-purification tablets, a small tarp to make a tent, nylon twine, a radiation tester, two pairs of socks sealed in plastic, a canteen-all stayed in the survival kit for now, except she popped two aspirins and washed them down with water to help take the edge off the pain in her back and shoulders.
The wire saw was nestled in the waistband of her trousers, they hadn't found that either.
There were safety pins, wire, fish hooks and line, matches, a sewing kit, tablets, a wire saw, even a teeny-tiny button compass.