Equipped with hard-biting diamond-studded chains, hand-held chain saws specially designed to cut concrete can make some cuts that hand-held rotary power saws simply can't. For example, concrete-cutting chain saws can cut square corners in openings without overcutting the corners. They also can make plunge cuts up to 19 inches deep into a concrete wall, allowing contractors to slice through thick walls in one pass. The chain saws can cut irregular shapes as well, and have even been used by sculptors to carve concrete statues.
This article describes chain saw models offered by four manufacturers. Saw weights range from 23 to 41 pounds and cutting-bar depths range from 9 to 19 inches. Most of the saws are hydraulic, but one company offers a gas-powered model for maximum portability.