Wall chaser machine is a specialized power tool used in construction to cut narrow grooves (channels) into walls, floors, or ceilings. These grooves are typically made to install electrical wiring, plumbing pipes, or conduit neatly inside the surface.
How it works
The twin blades rotate at high speed and cut two parallel lines into the wall
The material between the cuts is then removed (often with a chisel)
The result is a precise groove ready for cables or pipes