loaded question of the day!

[brino]

I earlier posted an article detailing the process, the US Armory method of bluing and blackening, with permission of American Machinist Magazine", who originally published it

Would you have a link to that handy?
Thanks,
-brino

EDIT: I think I found it here:
http://hobby-machinist.com/threads/bluing-or-black-oxiding-your-custom-made-tools.60163/#post-496125
(I had to go 4 pages deep into @benmychree's posting history.....)

...no wait, that was another reference to the original.
I think it's here:
http://hobby-machinist.com/threads/black-oxide-coating.22707/#post-201563

 

[benmychree]

I can provide a scan of the article; e mail me at: york@napanet.net
John York

 

[Wreck™Wreck]

Rough machine, heat treat then grind.

With such a small part do not leave more then .010" or so for finishing, the grinder will like you for this.