Some (the ones already into the holders) I milled down to fit the holders (an indexable mill was in order, that stuff is tough!)
And some were reduced in height only by milling the bottom (when I put them on the compound, they were already above the centerline)
to have a dovetail applied to their shanks.
Had some doubts about this setup for facing the dovetail to the correct thickness: it held.
The ideas I had about bolting the dovetails to the shanks were a no-go. As I said earlier, that material is tough!
The screws are holding only for a thread or two, and a portion of the tap is still in one of the holes.
The second DT was held in place for welding by three alu. rivets
Did not weld them myself: reliable joints were in order, here
Then, came this front-grooving/trepanning tool
I?ve not yet decided what to do with it and how: will probably make a parting tool by grinding away the curved portion
of the lip supporting the insert. I won?t go too close to the chuck, but may do for stock held into collets.
This is not oversize, but was definitely cut too short! Had it welded to a 10x10 HSS bar.
Pity it is a LH tool, so it?s not gonna get much use.
Marcello