Homebrew PCBs

> Although the punch would / will work why make it
> more complicated?
> <SNIP>
> One suggestion would be to add 2 additional holes
> to your board (or use 2 existing ones)drill them
> first....(these are the registration holes)
> <SNIP>

The point behind a punch is that you want to easily
line up the artwork with the registrations pins on
a jig.  Your PCB is taken as already being pre-
drilled (by CNC) to also fit those registration
pins.

If your in the business of hand drilling I agree
that the punch isn't needed.