To enable use of old handbrace drill bits with square taper ends in a standard hex cordless drill. Am not getting anywhere with search, don't know what terms to use really. Any ideas?
NT
On 11/08/2019 22:15, snipped-for-privacy@gmail.com wrote:
I'd question whether it is worth it. Those bits are designed for cutting
at very low speed and high load. Thanks to China a set of reasonable
Augers or Forstner bits is very affordable.
I think you might be out of luck there with the extensive use of hand tight
ening chucks on modern drills and the conversion of many of the bits formal
ly used with a brace to fit three jaw chucks I cannot see anyone bothering
to make a replacement chuck to fit drill bits that are now getting harder t
o find. I must admit I find augers used in power drills very easy to overdr
ill the depth owing to the screw guide feeding the drill in rather than the
pressure applied by the user. If you have a number of brace bits that you
want to use then cutting off the taper end off them might be your only solu
tion.
Richard
On Sunday, 11 August 2019 22:40:12 UTC+1, Tricky Dicky wrote:
htening chucks on modern drills and the conversion of many of the bits form
ally used with a brace to fit three jaw chucks I cannot see anyone botherin
g to make a replacement chuck to fit drill bits that are now getting harder
to find. I must admit I find augers used in power drills very easy to over
drill the depth owing to the screw guide feeding the drill in rather than t
he pressure applied by the user. If you have a number of brace bits that yo
u want to use then cutting off the taper end off them might be your only so
lution.
That's what I did before. Would be nicer to keep these as is.
Maybe I could contemplate moulding something in plastic, probably be strong
enough for small bits.
NT
On Sunday, 11 August 2019 23:18:45 UTC+1, tabby wrote:
ightening chucks on modern drills and the conversion of many of the bits fo
rmally used with a brace to fit three jaw chucks I cannot see anyone bother
ing to make a replacement chuck to fit drill bits that are now getting hard
er to find. I must admit I find augers used in power drills very easy to ov
erdrill the depth owing to the screw guide feeding the drill in rather than
the pressure applied by the user. If you have a number of brace bits that
you want to use then cutting off the taper end off them might be your only
solution.
ng enough for small bits.
It's easy to find adapters the other way round, but not to enable an old bi
t to be used in a modern hex drill.
NT
If you have one of those it would be better to just use it as intended -
those drills often aren't really usable at power drill speeds, even the
lowest.
Yes, cheap forstner bits from TNPs favourite shop would be much better
or even a spade drill in a powered drill.
The spiral is too coarse for a fast speed.
On 11/08/2019 22:15, snipped-for-privacy@gmail.com wrote:
Would it be possible to turn down the end part of the taper so a
conventional chuck would grip while retaining enough taper for the hand
brace? Probably not.
Cheers
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