Did you order the arbor?I gave the AliExpress SEHT type tool a try. For under $45 delivered and two positive reviews here, it seemed worth a shot. Will let you all know how it works.
That's much cheaper than I remember paying, I did buy 3 boxes of inserts though.Sure did
Looks like there may have been a little chip welding. Use WD-40 or kerosene and maybe slower feed.First pass at some 6061. Some radial marks on a light cut, moving right to left at approx 1k RPM.