A primer is a preparatory coating put on the surface before painting. Priming levels the surface, fills the cracks and holes and ensures better adhesion of paint to the surface. Good quality primer increases the durability of the paint and thereby drastically reduces the repainting and maintenance costs.
Fills Holes and cracks, levels uneven surfaces before painting
Forms a protective layer above the metal and thereby avoids highly corrosive chemicals coming in direct contact with the metal
Helps in better paint adhesion and thereby avoids paint chipping, flaking etc.
Increases durability of the paint
Paint thinner is also known as Paint stripper or paint remover. If you are repainting, you will first need to remove the old paint residues or you may need it to clean the tools that are used while painting or to reduce the viscosity of paint coatings when required. It is usually a colorless solvent often recognized for their particularly strong odor used to thin oil-based metal paints.
Removes paint residues quickly while repainting.
Thins the paint by reducing the viscosity of paint coatings.
Removes dirt, oil, grease etc to clean the surface before painting instantly.
Can also be used for cleaning the tools used while painting