carlsbad
Lions don't lose sleep over the opinions of sheep.
Surface speed is a compromise on parting.
That's what I was thinking. I'll try 5 mil/rev. I like to take it easy to preserve tooling. Stainless needs a bit deeper cut to avoid work hardening issues.
I have oil in my coolant system and it works great except I really have to keep the RPM down to avoid throwing it all over. For high RPMs I brush it on.
Indeed, I use high speed on small tool bits...parting, not so much.
-Jerry
That's what I was thinking. I'll try 5 mil/rev. I like to take it easy to preserve tooling. Stainless needs a bit deeper cut to avoid work hardening issues.
I have oil in my coolant system and it works great except I really have to keep the RPM down to avoid throwing it all over. For high RPMs I brush it on.
Indeed, I use high speed on small tool bits...parting, not so much.
-Jerry
(I part mine too). I've started parting before final alignment. I put it in the spiders, rough align with indicator on outside of barrel. Part. face. rough cut the thread diameter and shoulder at high speed with heavy cut (indigo chips). Stop and do final alignment with precision indicators inside barrel. Finish shoulder and thread prep with small cuts. Same process on both ends. Before I did this I always felt compelled to get the indicators back out to make sure it didn't move during parting and material removal. Never caught it moving but this way doesn't add any work, just reorders steps, and provides peace of mind. You're welcome.
