Breaking chips

[chunkymonkey]

I have a lot of success with a kc5010 grade from kennametal. also tungaloy has a great chip breaker.

[chunkymonkey]

I have a lot of success with a kc5010 grade from kennametal. also tungaloy has a great chip breaker.

[tejano4life72]

Some times its not the insert. It could be that the tool might be off center. The HI pressure lines may not be position just rite. Also when you pinch turn you might want to leave more room between the rough and finish turn tool so the chips have a place to go. I use to machine 14" parts from 1.250 dia. down to .375 dia. and when i use to get the nest like you put it, it was because somebody bump the coolant line while cleaning the chips off the part before the next tool came in. The turn insert was nothing special just a kennamatel KC935 insert.

[yoopertool]

Thanks for all of the good tips! I actually found an insert to use on some of the more "free machining" stainless steels that I am quite happy with. I was clued in by our SECO sales rep that he had heard rumors that some companies were using their AL KX series (designed for aluminum) inserts on stainless with good results. I ordered a few of them and have been using them exclusively on materials like 17-4 and 303 and have even had good results on 431. This insert doesnt break the chips, but allows for higher feed rates which make the chips thick enough where they wont wrap up as much. I have a few inserts that I am trying out on some of the not so friendly materials like 440c, 316, and 304, but havent found one that I am completly happy with yet. Thanks again for all of the help!