Homebrew PCBs

On Sat, 11 Jun 2005 17:21:58 +0200, <JanRwl@...> wrote:

> Stefan:
> I am curious WHY you want to "adjust" these plastic rings, as  they are  
> used
> in professional PCB drilling ONLY to support the bit in a magazine  for  
> the
> automatic bit-insertion step in CNC operations using more than one size   
> bit,
> AND, as a place to print the diameter of the bit.  That is, the  precise
> vertical location of the ring is not used as any "depth reference"; nor   
> would that
> "stay", anyway!


I will use the rings as a precise depth reference ;-)))

No, seriously, i want to make bit changing easier. it is a pain to adjust  
the drill in a pivoting press to just drill through the PCB each time. I  
will set the ring so it just sits against the collet and i don't need to  
care for anything.

It will also be of help with the CNC drill later i suppose. I only need  
like 0.5mm accuracy.


ST