On Jan 28, 12:06*pm, "Joe AutoDrill" wrote:
Anyone know where I can find a 3/4-12 ASA shanked chuck?

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Joe Agro, Jr.
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V8013-R

I believe that ASA=American Standards Assoc. – the precursor to ANSI
(American National Standards Institute). My guess is that the ASA
¾-12 thread should be a “standard” ¾ 12UN thread as listed in your
Machinery Handbook. Dremel made a small woodworking lathe (Moto
Lathe) with this mount and the plastic nose piece on their Dremel tool
is supposed to be that size. You can buy a chuck adapter:
http://www.oneway.ca/chucks/adaptors.htm , but you can probably make
one faster and cheaper.