ID Threading

[swain]

I have never done it to any specification....but its basically a 45 degree chamfer before threading to prevent crossthreading for anything that is taken apart and put together alot.

Pretty much commom practice for me on any thread done on the cnc lathe unless it is a real short thread...no room for it...ect.

In some cases I have chamfered the start and finish of the thread both inside and outside threads....mostly outside.

S

[roundman]

The beginning of the v thread is from > to \_/ for about .05 into the pitch turn or so on the plug gage. After the .050 or so flat it comes to the full point again. Wish me luck.

[roundman]

I used WOLOG's suggestion and after messing up one thread and rereading his instructions it did a good Higbee. I appreciate the help very much. I showed it to the programmer and he did not jump for joy like I felt like doing when it turned out. (I always get that way when I try something new and it works good) He just said cool and asked me what I did so I showed him the tool I used and that was as far as we got he was called off to do something for the shop boss. I will look at the other suggestion offered soon. Thanks.