Can anyone identify this very old boring bar insert?

JPMacG · Mar 10, 2023

Can anyone identify this insert? It is used on a Warner & Swasey M-1760 boring bar. It is carbide, 3/16" diameter with a flat on top. Engraved on the flat in tiny handwritten lettering is "Super 905-SB-SD".

Edited for clarity.

Nutfarmer · Mar 11, 2023

Buy a green wheel and you can grind carbide.

Welcome back Guest! Did you know you can mentor other members here at H-M? If not, please check out our Relaunch of Hobby Machinist Mentoring Program!

Can anyone identify this very old boring bar insert?

JPMacG

Active User

Attachments

Nutfarmer

Registered