What are These?

[ShopShoe]

Many years ago a bought a box of misc. at an auction which included lathe tooling. Many years later I got my lathe and I was sorting my junk and came across some toolbits I could use and these things. they look like homemade cutting tools. My best guess is deburring tools. They don't look like they would work very well as countersinks. Any guesses?

--ShopShoe

 

[websterz]

It looks like someone took old endmills and ground them down to use as center punches.

 

[jonesie]

looks like broken endmills, and someone put a somewhat point on them. they might have used them in the tailstock chuck and then into a tap to keep it straight. might have used for a makeshift dead center also. jonesie

 

[n4zou]

Both are end mill shanks. I always save my worn out end mills and re purpose them. I even made a lathe tool holder for 1/2" shank end mills. Just grind them into turning, facing, threading, or even boring tool bits.

 

[mehmet1846]

Looks like,they are centre drills,made from old end mills for large hole centering...

Regards

Mehmet

 

[ShopShoe]

Thank you websterz, jonesie, n4zou, and mehmet. I don't think I'll use them but you gave me some ideas to practice grinding on my own broken end mills.

--ShopShoe