For the following application, identify one or more nontraditional machining processes that might be used, and present arguments to support your selection. Assume that either the part geometry or the work material (or both) preclude the use of conventional machining

a. Producing a through-hole in the shape of "L" in a 12.5 mm thick plate of ceramic materials. The size of the "L" is 15 by 10 mm and the width of the hole is 3 mm.
b. Producing a blind-hole in the shape of the letter S in a 30 mm cube of platinum. The overall size of the "S" is 10 by 6 mm, the depth of the hole is 3.8 mm, and its width is 3 mm.
c. Producing a matrix of 0.1 mm diameter holes in a Nickel plate of 3.2 mm thick. The matrix is rectangular, 75 by 125 mm with the separation between holes in each direction 1.6 mm
d. Cutting of flat sheets of fiber-glass for boat industry. The work team supervisor says the company should invest in a plasma arc cutting machine, what do you think? Justify your answer by indicating the characteristics of the process that make PAC attractive or unattractive in this application.
e. A company that manufacturing airplane parts must cut large quantities of matrices composites. Many of these parts are strong and wear-resistant, which properties make them difficult to cut. What nontraditional process(es) would you recommend to the company for this application? Justify your answer by indicating the characteristics of the process that make it attractive.