Homebrew PCBs

Alexandre,
You know you are absolutely right. I noticed my son's new dremel 
came with what looked like a regular keyless drill chuck and he 
liked it. So I got one and while it does have .001 to .003 (or 
sometimes more) runout, it is consistant for the length of the 
drill/tool, that is it is fairly well aligned with the spindle axis. 
I always thought that collets were suppossed to be more accurate 
than a 3-jaw drill chuck, but not in this case.
al

--- In Homebrew_PCBs@y..., "Alexandre Domingos F. Souza" 
<taito@t...> wrote:
> >Anybody else checked this? Do I just have a bad (abused?) bunch
> >of collets? An old one with a black oxide finish was better then
> >the newer 'white' ones.
> 
> 	Have you tried the coletless chuck? That one that looks like 
one from a normal drill? That one seems to be better in the 
centering of the tool. 
> 
> 
> ---8<---Corte aqui---8<----
> 
> Alexandre Souza
> taito@t...
> http://planeta.terra.com.br/lazer/pinball/
> 
> ---8<---Corte aqui---8<----