What is dykem used for in layout work?

Dykem is a type of layout dye commonly used in machining and fabrication to mark surfaces for cutting, drilling, or other processes. It provides a visible contrast on metal surfaces, allowing for precise alignment and measurement. The dye helps to ensure accuracy during layout work by allowing operators to clearly see where cuts or holes should be made. Additionally, it can assist in identifying the areas that have been processed versus those that still need attention.