Homebrew PCBs

Hello,

It's not a dumb question; such small centerdrills and C/S's DO exist. 
But you are correct, for PCB work the hole is simply drilled in one 
pass with a single bit.

The small tooling (C/D's and C/S's) is for machining other materials.
micro100 is one source.

Ballendo 

--- In Homebrew_PCBs@yahoogroups.com, "Mike Young" <mikewhy@s...> 
wrote:
>
> Can I conclude, from the lack of choices for 1/8" shank center 
drills or 
> countersinks, that center drilling the itty-bitty PCB holes isn't 
popular 
> practice? Too dumb a question to bother answering?
>