Question

Photo chemical blanking can be used to machine the parts to high precision, up to which of the following thickness values?

(a) 0.001 – 0.007 mm

(b) 0.007 – 0.012 mm

(c) 0.013 – 1.503 mm

(d) 1.612 – 2.125 mm

The question was posed to me by my college director while I was bunking the class.

Origin of the question is Photo Chemical Millling-Introduction topic in portion Chemical Processes of Advanced Machining

Answer 1

Correct answer is (c) 0.013 – 1.503 mm

Best explanation: PCB can be used to machine parts of thickness 0.013 – 1.50 mm to high precision.