1 – Residual stresses should relieved in order to prevent warping
2 – Surfaces to be thoroughly degreased and cleaned
3 - Masking material(tapes,paints,elastomers & plastics ) is applied
4 – masking is peeled off by scribe and peel technique
5 – The exposed surfaces are etched with etchants
6 – After machining the parts to be thoroughly washed to prevent further reactions with residue etchant
7 – rest of the masking material is removed and the part is cleaned and inspected
8 – additional finishing operations are performed on chemically milled parts
9 – this sequence is repeated to produce stepped cavities and various contours