Homebrew PCBs

I'm of the same opinion as markus.

the edm,DRO, etc. group is too far away from where i am.
I read in their archives but there are a lot of very specialized things.
we discussed if we need pcb cnc here.
the result was steve said as long as for pcb making it is ok. (if i 
remember correct)

i want it only for drilling pcbs, i don't like the milling... i am sure a 
chemical process is superior.

But i want to build a sturdy machine, because i do not want to make two, 
for aluminium milling and such things.

so please, everybody interested in cnc mill making, write down what you 
plan.
So we see what makes sense to discuss because similar and what is so 
different
in requirement that it is not useful for the others.

I want a machine for drilling pcbs, but milling other materials.
Thus it must be sturdier than a drilling-only machine.
I want the option to add a depth guide for milling in the future.
It needs to be strong enough to carry even a heavier spindle when i need.
Size should be about A3, like a small Photocopier would be just right.
(workable area smaller, about a4 or 30x30 (cm).)

st