Homebrew PCBs

It's a good thing but, I am surprised by quantity of professional, and 
experienced reply on a Homebrew named list...

If would buy a already made machine if wish a really good one. It's just 
an hobby thing.
And as i said my wish is a 30-40.000rpm spindle. I can test if it handle 
above that but it stops there.  This is a cheaper dremel like tool, but 
it can go faster or make less noise for the same rpm and have 
replaceable bearings (they came in a box of 10), and maybe a better tool 
chuck.

My questions related to use of DC with pwm on and AC brushed motor, or 
where to post it on cnczone, didn't deserve answer like a balance 
machine did.


 > on Wed, 1/21/09, Mike Henry <mikeh_dhr@...> wrote:
 >
 > Would be curious how you balance the assembly?  At 60k-100k rpm, this 
will be critical for smooth operation and prevent tools from breaking, 
bearings from seizing, etc.
 >
 > [Non-text portions of this message have been removed]
 >