Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [Homebrew_PCBs] Re:50.000rpm pcb spindle idea

From: Simao Cardoso <simaocardoso@...>
Date: 2009-01-21

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]
>