Question

What is the value of the overcut that is obtained using ECM?

(a) 0.3 mm

(b) 0.5 mm

(c) 0.7 mm

(d) 0.9 mm

The question was asked in a job interview.

My question is from ECM-Process Characteristics in section Electrochemical Processes of Advanced Machining

Answer 1

Right answer is (b) 0.5 mm

To explain: An overcut of 0.5 mm is obtained when machined using ECM.