Parting Titanium on the Haas TL-1 Lathe

In which we were handed a 2-inch diameter bar of an unknown alloy of Titanium and asked to cut it into 0.188-inch slices. After killing a bandsaw blade, we turned to an ISCAR parting tool and follow the carbide-brick road. We fail. Then, we succeed. And we think we figured out why. Join in on the fun...
Insert: ISCAR TAG N3C IC808 EDP number 06003577
Kit: KIT TGFH 26-3C EDP number 2302289
Grooving blade: TGFH 26-3 EDP number 2301764
www.iscar.com/eCatalog/item.a...
All links to products and background information at: pfg.gg/links
(PFG Stones is a trademark of Kinetic Precision)

[@johanneslaxell6641]

I would say that in ~95% of the times I destroy inserts/holders when parting it's when it stops cutting for any reason. And for me it work better when the chips get deformed instead of broken... The geometry of the insert plays big role in how the chip exit the groove because inserts "fold" the chip different depending on geometry.
And insert is better to be changed one part to early than one part to late...

[@markengineeringSA]

nice diskettes , when the parting edge chips it will " steer" the tool and get side rub

[@KPNH]

Ah-ha! That makes sense!

[@TheLiddokun]

I just realized you have a tool holder that holds the tool holder that holds the tool holder that holds the actual tool.

[@KPNH]

It's tool holders all the way down. 😂👍

[@warrenjones744]

I know from following you elsewhere you initially tried to saw cut the bar into slices and failed miserably. It appears that the original end of the titanium bar was saw cut from the distributor. Is that the case? Special blade? does anyone even know? Nevertheless the Iscar tool works very well. I think I might need one of those. My cutoff tools I own are not great. I really like the way the insert is backed up and supported in the holder. The insert tool installation/removal thingy is very cool.
It is interesting how a seeming small 10 FPM increase made such a difference in surface finish. I like that you showed the cut in real time, it's pretty quick. Good stuff my friend, Good stuff

[@KPNH]

Thanks, Warren. One end of the bar, as supplied, was properly sawn. I’m sure it would have been a similar learning process to figure that out. The other side had heat marks as if it were cut with an abrasive wheel. Probably pretty exciting. If I did this a lot, I’d want saw capability, too.