The importance and industrial applications of filled polymers is repor
ted. In recent years cast nylon with various fillers has been extensiv
ely used in industry, where machining is carried out as a secondary pr
ocess to achieve necessary surface finish and shape. There is a pressi
ng need to develop various cutting techniques to enhance the machining
performance features for these polymers. An understanding of the effe
ct of major process variables on forces, power, and surface finish hel
p practicing engineers in selection of cutting tools and machine tools
for efficient manufacturing. In this paper, the qualitative and quant
itative effects of major process variables such as tool, cut geometry,
and cutting speeds are studied for cast nylon with two different fill
ers, namely MoS2 and vulcanized vegetable oil (VVO). The data processi
ng is carried out by a suite of statistical routines.