|
There are two ways to cut threads at the shoulder, With a relief cut and without a relief cut. Both are correct and cutting threads without a relief cut is actually the most popular. I personally cut threads with a relief cut most of the time just because that is how I was taught. There is a long standing debate that the relief cut weakens the barrel leading to the threaded section braking off. I personally don't believe this if the relief is cut properly, unless you are talking about a very wall.
Roberts opinion is valid because he is a good engineer with a lot of experience and trust me we don't see eye to eye on quite a few things. Engineers don't like gunsmiths, gunsmiths don't like engineers and machinist don,t like ether one of us. He like doing it one way I prefer the other and both of us are equally correct. It's all personal preference.
|