07-11-2013, 06:29 PM
Don't be afraid Ed. Like sex it's only scary the first time, after that you just want it all the time. 
Oil or coolant isn't required for parting off or turning with carbide inserts. The chips are supposed to take the heat away from the cutting zone. Coolant can help maintain size and finish in long turning, as things can heat up in the long run.
Here's a cutoff with a little too little feed rate and you can see the chips turning blue. It's done with a single-ended insert in a blade style holder, where the other video was a monoblock tool similar to yours, though .156" wide rather than your .094" one.
Oil or coolant isn't required for parting off or turning with carbide inserts. The chips are supposed to take the heat away from the cutting zone. Coolant can help maintain size and finish in long turning, as things can heat up in the long run.
Here's a cutoff with a little too little feed rate and you can see the chips turning blue. It's done with a single-ended insert in a blade style holder, where the other video was a monoblock tool similar to yours, though .156" wide rather than your .094" one.