HSS iathe internal threading tool, name

Bill D · May 26, 2020

I am looking for a small internal threading tool to use on a lathe. I am thinking of the kind that look like an allen wrench forged from a rod and sharpened on the short leg. Or the kind that are just a straight rod with one side ground off so the point sticks out one side. I do not know what to call these so all I can find are insert type which are too big. I suppose I could make a mini boring bar and use a 1/8" round tool.
Bill D

Gordon Heaton · May 26, 2020

I have a bunch of this type: Criterion example

You have to zoom in on the bottom of the first image, but you can see they get pretty small.
Other than eBay I don't know where to get them these days.

L Vanice · May 26, 2020

Contact Bokum Tool Co., a USA maker of internal threading tools of many sizes, including really small in HSS and carbide. They also make great boring bars. The tips are form ground, so you just grind the top to sharpen, leaving the 60 degree angle unchanged. Komet in Germany makes similar products. Bokum might be Criterion's supplier.

Bokum Tool Company, Inc.

https://bokum.com/Files/compbrochurefinal.pdf

Larry

ChipSplitter · May 27, 2020

PH Horn.
Iscar.
Maybe-- Richards Microtool.
Thinbit?? (not sure)

TeachMePlease · May 27, 2020

ChipSplitter said:
PH Horn.
Iscar.
Maybe-- Richards Microtool.
Thinbit?? (not sure)

Add Micro 100 (now owned by Harvey)to that list.

ChipSplitter · May 27, 2020

TeachMePlease said:
Add Micro 100 (now owned by Harvey)to that list.

Oh, how could I have forgotten them??

rons · May 28, 2020

ChipSplitter said:
Oh, how could I have forgotten them??

I remember them pretty good when parting 1" diameter aluminium bar...

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HSS iathe internal threading tool, name

Bill D

Diamond

Gordon Heaton

Titanium

L Vanice

Diamond

ChipSplitter

Titanium

TeachMePlease

Diamond

ChipSplitter

Titanium

rons

Diamond

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