hello gentlemen, i have an issue here. i am not a mechanic or a machinist so please keep the comments constructive, thanks!. i need a 10" rotor with a 2 3/16 center hole. i cant find one , no one makes them. i have a metal lathe that i can barely use and want to turn a heat treated steel 11.5" rotor, which has the proper center hole (i have 4 of those) to 10". is this possible? i knoiw this stuff is hard and i dont want to overheat it and warp it. what type of tip should i buy? i have a smithy 1220 3 in 1 machine that should be up for the task, i just need the right tip to buy, or a connection to an experienced machinist in shittastic CT . ideally i would like to try this myself, the machine is just sitting there......but if you guys think its going to be a disaster i will mail it to a willing machinist. will pay in cash or parts.