Re: Semi-good high speed spindle idea? - Proxxon collet chucks

I actually got mine online in the UK

but a google search shows this for the US

http://www.woodcraft.com/family.aspx?DeptID=5013&FamilyID=4624

The shaft needs an 8 x 0.75 thread
the shaft is then bored about 4.75mm
then the end has to be accurately countersunk at approx 30 degrees

I made a machine reamer from drill rod to do this part

I then Air hardened and oven tempered mine

it seems a bit of a performance but I reckon it's worth it..

the alternative would be to buy the cheapest hand tool with the chuck
on it and salvage the shaft for fitting to your own shaft.

If anyone has a CNC lathe, it might be worth making up some shafts for
resale.. I only have a manual lathe and I'm in the UK so I don't
think it would be cost effective me offering to make them. At around
30 minutes each I would have to charge more than it would be worth !

Chris

, "Dave Halliday" <dh@s...> wrote:

>
> Is there a preferred vendor for these. Googled and didn't see anything
> much. There were a lot of hobby stores but they are selling the
> handpieces and not the parts.
>
> Thanks!
> Dave
>
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Chris Horne
> > Sent: Tuesday, January 24, 2006 8:15 AM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: [CAD_CAM_EDM_DRO] Re: Semi-good high speed spindle
> > idea? - Thanks and an explanation.
> >
> >
> > My two pennyworth... I posted this to the hombrew pcbs group a few
> > days ago..
> >
> > The proxxon hand tool collet chuck, ABEC 9 skate bearings, 8mm drill
> > rod, an 8mm die to suit the proxxon thread, a few scaps of metal and
> > you are away....
> >
> > the proxxon collet chuck is the best of the miniature collet chucks..
> > the Skate bearings are by far the best bearings for the cash...
> >
>