On 2016-03-06, Bob La Londe wrote:
"DoN. Nichols" wrote in message
...
[ ... ]
What *I* would use is one of the smallest Albrecht drill chucks.
I've found the 0-1/8" ones to work well down to the smallest number
drills that I have (#80), both in a Cameron Precision sensitive drill
press, and in the tailstock of an Emco-Maier Compact-5/CNC lathe.
From a search for Albrecht chucks, I find this description;
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The Albrecht 70020 C30-J0 Classic Keyless Drill Chuck has a 0.015" to 1/8"
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This is the one with a J0 taper.
[ ... ]
There is also a smaller one -- 15-J0 -- maximum capacity of
1/16"
Both are small enough to handle rather elevated RPMs.
[ ... ]
They are pricey aren't they? Still not much more than a name brand integral
shank chuck.
Yep -- and really good quality.
Now to see if I can find a J0 sto .250 stright shank adaptor. LOL.
Hmm ... search through MSC shows several 3/8" shank to JT0,
including at least one by Albrecht -- to match the quality of the chuck
for $48.37.
Or -- a cheap import one for $13.88, or an AcurPro for $14.47 --
almost as cheap.
Actually I think for now I am going to stick with 1/8 shank carbide micro
drills, and back drill a clearance hole, then the vent hole.
I will want one of those chucks in my arsenal though. As soon as I find the
taper adaptor.
So -- the question is whether you could make it work with a 3/8"
shank instead?
Good Luck,
DoN.
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