The ceramic tile cutter works by first scratching a straight line across the surface of the tile with a hardened metal wheel and then applying pressure directly below the line and on each side of the line on top. Snapping pressure varies widely, some mass-produced models exerting over 750 kg.
The cutting wheel and breaking jig are combined in a carriage that travels along one or two beams to keep the carriage angled correctly and the cut straight. The beam(s) may be height adjustable to handle different thicknesses of tiles.
The base of the tool may have adjustable fences for angled cuts and square cuts and fence stops for multiple cuts of exactly the same size.
Popular brands of Ceramic Tile Cutters available at Prefloortools.com include QEP, Montolit, Sigma, Ishii and Rubi.