This chemical machining process is used for highly detailed removal of material from flat, thin sheets or fragile workpieces; it consists of the following six stages: (1) the design of the part to be produced is prepared and photographic negative is made; (2) the sheet material is completely coated with photoresist and dried in an oven; (3) the negative is placed over the coated material and exposed to ultraviolet light, which hardens the portion of photoresist that is exposed to the light; (4) the material is "developed", dissolving the areas of photoresist that were not exposed to the light; (5) the blank is then immersed in a bath of reagent which etches away the areas without photoresist; (6) the photoresist is removed and the part is washed
A) Photolithography
B) Electrochemical Machining
C) Chemical Etching
D) Photochemical Machining