racking, the anodize process begins with the material being cleaned in a non-etching alkaline chemical cleaner to remove all shop dirt, water, soluble oils, etc., which may have accumulated on the material during handling and/or manufacturing.
cleaning, the material is ready for the etch tank. The etch process will produce a matte finish and also minimize minor surface imperfections such as light die lines and minor travel marks. Etching will not eliminate ALL surface imperfections.
the material is desmutted and rinsed to remove residuals left from the etch. This is the final preparation stage prior to anodizing