The etch factor in chemical machining is equal to which one of the following:
A)CIt
B)d/u
C)u/d; where C = specific removal rate d = depth of cut I = current t = time and u = undercut

Question

Quizplus · Accepted Answer

The etch factor in chemical machining is equal to d/u, where d is the depth of cut and u is the undercut. This ratio indicates the efficiency and accuracy of the etching process by comparing the intended depth of cut to the amount of material unintentionally removed beneath the mask.

The Etch Factor in Chemical Machining Is Equal to Which