Disclaimer: Last shop training I had was 67 yeas ago in engineering school machine shop.
Tool maker friend has a lathe and is a excellent operator. Going to have him cut and crown my barrel and cut a 1/2x28 thread for a Harrells brake and I have some questions.
6mm barrel so we have to open the brake up to .263 (0.02 bigger than bore). The brake bore will be in the center, the barrel bore may not be. How important is being perfectly symmetrical between bore of barrel and brake? Could we use a 4 jaw chuck and a live center and be close enough? Or a 3 jaw and not worry about it?
Should the shoulder of the brake fit snugly up against the crown of the barrel? Or is a .002-3 gap OK? I am thinking about heat locking the brake on the barrel.
Haven't been sleeping well and I am running out of things to over think!
Tool maker friend has a lathe and is a excellent operator. Going to have him cut and crown my barrel and cut a 1/2x28 thread for a Harrells brake and I have some questions.
6mm barrel so we have to open the brake up to .263 (0.02 bigger than bore). The brake bore will be in the center, the barrel bore may not be. How important is being perfectly symmetrical between bore of barrel and brake? Could we use a 4 jaw chuck and a live center and be close enough? Or a 3 jaw and not worry about it?
Should the shoulder of the brake fit snugly up against the crown of the barrel? Or is a .002-3 gap OK? I am thinking about heat locking the brake on the barrel.
Haven't been sleeping well and I am running out of things to over think!