It occurs to me that if the blacksmith making the bit does the habitual
clockwise twist when forming the bit....it'll turn out to be a left handed
auger?
And I can't see how direction matters if being used in a wooden brace with a
catch for that notch....
So perhaps just a lack of planning ahead by the smith?


-----Original Message-----
From: Mick Dowling 
To: Christian Gagneraud 
Cc: old tools 
Sent: Fri, Jul 3, 2020 6:23 pm
Subject: Re: [OldTools] Hand forged auger bit, how old?

Chris, GGs

If right twist bits remove material then maybe left handed bits are for
replacing it. Possibly a Lie-Nielsen ancestors attempt at an April 1st joke.

A properly serious thought. Left twist bits, why? Or, alternatively right twist
bits, why? Is there a mechanical advantage to right or left twist bits,
depending on whether you are right or left handed?

Mick Dowling
Melbourne Australia

> On 3 Jul 2020, at 8:41 pm, Christian Gagneraud  wrote:
> 
> It is a left turn bit!
> 
> I remember reading an online pdf about brace and auger bit history, it
> had a map of Europe showing the origin of different tang shapes. But i
> can't find it anymore, spent an hour googling, and finally gave up.
> And AFAIR, there was a section about left turning bits, saying these
> are old bits from continental Europe.
> 
> Anyone would have more information?
> 
> Could this be a bit from early or mid 1800's?
> 
> Please, no "farmerize" joke! ;-)
> 
> Cheers,
> Chris
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https://oldtools.swingleydev.com/mailman/listinfo/oldtools

To read the FAQ:
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