Hi Marty,
The round shank is an interesting feature - they went to some trouble
to grind that since they started with a square blank.
My guess is that this is a threading tool rather than a cutoff tool;
the round shank allows angling the tool as is needed when making
square threads. <snip>
John
Pretty sure its parting John. This tip can be held at any angle you please and this wouldn't cut a tread of any form I know of. Included angle across the face looking from above can't be more than 3 or 4 degrees and that only because of the relief angle I'd guess.
Marty
