Thread: Recommend your favorite TCMT insert

Thanks to all that responded. There is a wealth of information now in this thread that is not only helping myself but hopefully others that come across it. I had no idea about the interchangeability and difference between TCMT and TCGT (Ueee) inserts. The different radius angles (Jekyll and Hyde) and top rake angles (cba_melbourne). And thanks to Ray for sharing the tip on resharpening the carbide. The brazed carbide boring bars developed a radius in a couple of cuts so I am not going to bother to resharpen as they appear to be total junk (paid next to nothing for them). For the note this all happened using flood coolant whilst producing wonderful spiral springs of steel. They got the job done going from 25mm to 36mm, and also making a 20mm boss, but I swore I would not bother with them again.

I ended up going with some Korloy inserts that Ueee mentioned above. I had my eye on them as I have had success using their SEHT inserts with my Glacern face mill. I will see how they go at boring AL.