Question

In a dry cutting operation using a −5 degree rake angle, the measured forces were; cutting force = 1330 n and thrust force = 740 n. when a cutting fluid was used, these forces were; cutting force = 1200 n and thrust force = 710 n. what is the change in the friction angle resulting from the use of a cutting fluid?

Answer 1

The change in the friction will depend on how much cutting fluid was actually used and lubed on. In my experience, when I get a wet rag, and soak it in the cutting fluid, I seem to get a stronger and bolder cut that just butter knives it's way through the wood. The cutting fluid is a powerful agent, that if, and only if, used right, will get you the results you are looking for.