- Joined
- Feb 28, 2019
- Messages
- 499
They look like really large engraving bits to me. "Single flute" in the sense that there is only one cutting edge - like a D-Bit. Pointy like an engraver, my first thought was that they had the tips broken off, but they both are "broken" the same way - so probably not broken. The one thing I can't explain is the screwdriver slots in the top end of the bits, why? If they are held stationary when used then maybe that allows you to adjust the angle of the cutting edge relative to the workpiece.
Tried to look them up based on the markings "Tarpley" chesterland o "1/16 B"
Found a mention of Tarpley in Chesterland OH - but not much else.
So why the screwdriver slot in the back end of the bit?
Dave
Tried to look them up based on the markings "Tarpley" chesterland o "1/16 B"
Found a mention of Tarpley in Chesterland OH - but not much else.
So why the screwdriver slot in the back end of the bit?
Dave