Homebrew PCBs

Neil,

Yes, those are very good quality tools and made for industrial use 
(at least the models I have seen).  I would suspect that it would 
work well for a spindle but have not had any hands-on experience 
with them.

Chris


--- In Homebrew_PCBs@yahoogroups.com, "Neil Baylis" 
<neil.baylis@...> wrote:
>
> >  Of importance in a spindle, this is what I found to be 
important:
> >
> >  * MINIMAL spindle runout - it the drill bit wobbles it will 
break!
> >  * Spindle must be perpendicular to the table!
> >  * Easy change of tools - it gets to be a pain when using collets
> >  * Good spindle speeds - Don't get too caught up in the 100,000 
RPM
> >  speed recomendations. You only need that speed if you want to 
drill
> >  the holes at a fast feed rate. You can drill perfectly fine at 
1500
> >  RPM- just use a slower feed rate. For hobby use if you can get
> >  somewhere between 2000 and 10000 RPM you are in pretty good 
shape.
> >
> >  Chris
> 
> Chris,
> 
> I was wondering if a Foredom type handpiece might be sufficient. 
They
> are definitely built to a higher standard than Dremel. They have 
some
> that take collets and have a nicely cylindrical body for easy
> clamping. I think I might order one and see how good the runout is.
> 
> Neil
>