01-12-2015, 11:30 PM
Jack,
I've seen the different size shank thing with metric tools but rarely with inch sized ones over 1/4" cutting diameter. Usually when you see that it's a case of using a larger diameter shank on end mills well under 1/4". I have some a 3/16" mill with a 1/4" shank, and many different sizes under 1/8" that all have 1/8" shanks, including the (5) 1/32" solid carbide end mills I'd recently bought.
My theory is that the larger shanks make it easier to control runout from grinding when it's a bigger shank and holder.
Ken
I've seen the different size shank thing with metric tools but rarely with inch sized ones over 1/4" cutting diameter. Usually when you see that it's a case of using a larger diameter shank on end mills well under 1/4". I have some a 3/16" mill with a 1/4" shank, and many different sizes under 1/8" that all have 1/8" shanks, including the (5) 1/32" solid carbide end mills I'd recently bought.
My theory is that the larger shanks make it easier to control runout from grinding when it's a bigger shank and holder.
Ken