drilling a .096 dia into 316 stainless/ Not going straight
drilling a .096 dia into 316 stainless/ Not going straight
(OP)
I'm trying to drill (in a lathe)a .096 dia into 316 stainless X 3 inches long. I'm having problems with it staying in the center. I would like no more than .010 TIR. Any ideas out their ?





RE: drilling a .096 dia into 316 stainless/ Not going straight
As you have probably learned clearing the chips is a major problem. A wedged chip will very easily drive you off line especially with a small diameter drill. When drilling 316 SS stops and starts can also contribute to the wandering problem.
Ever drill company has a bit that is better suited for drilling deep holes. You might check with your supplier.
You might also look at Carpenter Project 70 316 SS for better machineability if the job warrants.
Is this a one off or a many piece job?
What is the total precision required?
Comeback with the above information as there are other possibilities for making the hole.
RE: drilling a .096 dia into 316 stainless/ Not going straight
If all the above still isn't straight enough perhaps you can turn the OD between centers after drilling through.
Or visit a shop with an EDM.
RE: drilling a .096 dia into 316 stainless/ Not going straight
Mike Halloran
Pembroke Pines, FL, USA