Have always wanted to try a parting blade with carbide insert. I have a LMS 3536 8.5x16 lathe that has enough juice to handle it. The commercial versions are out of this hobbyist's budget, so went for a Shars combo pkg - http://bit.ly/2pmQtIi - AXA holder, blade & inserts.
Gave it a run today. Had a 3/4" bar of 1040 CRS in 3 jaw chuck, carriage all locked down. Started in - lots 'o chatter - tweeked speed/feed till I saw some nice chips coming out. Things were going well, and then (as you may have guessed), it dug in an popped the insert out - and holder appears bent as now insert just falls out.
Undaunted I flipped the blade around and tried again - with same results.
So - I'm thinking the heart of all this is the blade. The tool holder itself is typical QCTP stuff.
I'm hoping that the Shars blade was the culprit - appearing to be a bit light (AL?).
It would seem if I get a name-brand blade (and thinner inset) that I may get a workable system. I know - avoid this "BigBoy" tooling and stick with a standard HSS parting tool - but where is the challenge in that? Anybody else tried this?
Gave it a run today. Had a 3/4" bar of 1040 CRS in 3 jaw chuck, carriage all locked down. Started in - lots 'o chatter - tweeked speed/feed till I saw some nice chips coming out. Things were going well, and then (as you may have guessed), it dug in an popped the insert out - and holder appears bent as now insert just falls out.
Undaunted I flipped the blade around and tried again - with same results.
So - I'm thinking the heart of all this is the blade. The tool holder itself is typical QCTP stuff.
I'm hoping that the Shars blade was the culprit - appearing to be a bit light (AL?).
It would seem if I get a name-brand blade (and thinner inset) that I may get a workable system. I know - avoid this "BigBoy" tooling and stick with a standard HSS parting tool - but where is the challenge in that? Anybody else tried this?