Precision Parts Used in Race CarsEncoder Disks and Sensor PlatesModern race cars collect large amounts of data. Etching can create repeated holes, slots, or mesh patterns across one metal sheet. Protecting Race Car ElectronicsData systems, communication equipment, control modules, sensors, motors, and power electronics may operate close together inside the vehicle. How Photochemical Etching WorksPhotochemical etching, also called photo etching or photochemical machining, removes selected areas from a metal sheet through a controlled chemical process. A qualified metal etching supplier should review how the geometry, material, inspection plan, and later forming or finishing steps work together.