Re: 16mm Chuck needed...

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "jzmuda2000" <hwhacker@g...>
wrote:

> Hi!
>
> I am a CNC newbie.

As are we all, no matter how long we've been hacking away at it!

>
> I have noticed that the "business end" is a 16mm (close to 5/8")
> diameter shaft with 1mm threads.
>
> I would like to put a chuck on this. Any idea if this is standard
> size. I realized that with the metric threads...I might find it

hard

> to find a chuck to fit....but I wondered if you folks know of this

For square shank tooling you can adapt the chuck from a hand brace (
"Brace and Bit" like your Dad used! ). You'll have turn up a shaft to
fit your spindle and ( probably ) clean up the jaws and internal taper
a little, but it is surprisingly repeatable. I've been using such a
setup for over a year while experimenting with EDM for printed circuit
boards.

Eventually, however, you are going to build a collet holder if you
will want an auto tool loader.

Curt