How to... internal threading/grooving

[rock_breaker]

Nice job Scattermaster, you just passed an important milestone. Follow Kd4gij's instructions for use.
Have a good day
Ray

 

[scattermaster]

If there's no particular dimension required for a relief groove I just use the threading tool. I plunge it in and hand feed it back and forth about .125" to form the groove. It's quick and uses the same depth setting as the thread.

hmmm, that'ed be too easy!
I never even considered doing that. I would have thought it would break the insert.
Now I gotta go back and try it out.

 

[magicniner]

hmmm, that'ed be too easy!
I never even considered doing that. I would have thought it would break the insert.
Now I gotta go back and try it out.

It works fine, plunge the groove first to full thread depth, then cut the thread in your chosen way.
I use Iscar's recommended cutting speeds and depths for my Cham-Groove kit.