Diy Internal Threading Tool - Lathe.

I for one don't mind the 'dusting' off old posts. Reading through this thread I just learned two things that I hadn't seen before.
 
I mostly use Bokum form relieved internal threading tools; they are only sharpened on top, on a radial line, they last for many years in regular use and come in many diameter sizes; I find them on E Bay occasionally, they also make lead angle and flat bottom boring bars in a large range of sizes from tiny to quite large in both carbide and HSS.
 
Im just curious about it because id like to make a internal lathe tool from hss but will i be able to use that tool on all threads up to 1”. I was looking at insert style tools and i ended up being confused bc of the size of certain inserts.
 
Im just curious about it because id like to make a internal lathe tool from hss but will i be able to use that tool on all threads up to 1”. I was looking at insert style tools and i ended up being confused bc of the size of certain inserts.
 
I've got a couple of larger diameter taps that are mucked up.
Yet another item to put on the Shop's To-Do List. :grin:
 
Yea same ive got a few old taps from my grandfather that i thought i could clean but now ik what i can do with them
 
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