Hey,

I am about to go and write my C of Q for Machinist.

I was wondering if someone could help me out with a few things?

1.to calculate machining times.
2.Know how to calculate feeds and speeds.

Maybe a formula and a few examples would be amazing, lathe and mill of they are diff. This is the biggest thing I am weak with.

also maybe anything else I should know for the C of Q, thanks very much in advance.