Ok, I will.
But first...I'm not sure its what you were expecting Nelson
This is a pin vice that I made in 1981 during my 2nd year as an apprentice.
They are used for holding small drill bits, like #80 and such, in standard chucks.
Basically they are just a small collet and holder. They are also handy for chucking small drills and spinning them by hand for reaming small holes and deburring. You make the length to suit your hand and the end of the parallel section normally gripped in a standard chuck rests in your palm while the thumb and forefinger can spin the tool easily.
We made the collet by simple machining on a schaubin bench lathe, ( becasue that was available), but it could be easily done in any lathe really.
We made the holder first, machining the shape, OD, and threading. Then the collet closer/nose/whatever, was machined to size and shape, and tapped to suit. Not 100% sure but I think we machined a 7/16 by 26 Brass thead.
Collets were last. Made to shape and to suit the holder, still whilst being part of the stock material. OD size all finished, then drilled to size, cut to length. before being slit it in the mill.
Made a couple of collets with various holes to suit small drills up to about 3/32". Above that size we could chuck them normally.
Actually the smallest collet I dont think was drilled at all. Just split with a slitting saw about 25 thou thick.
Sorry no build up pics, not sure anyone had ever heard of digital photog in 1981, and anyway, I was a 2nd year apprentice then, that knew it all; and how to do it, and was never going to need to document anything anyway.
Knurling makes it better to use and look nicer but not necessary.
Definataley been "handy as" over the years gone by.
It was definately a good learning exercise in "precision" machining for a newby.
Blueing is off the shelf chemical cold blueing. Rust courtesy of being slack...