Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "gettingalongwouldbenice" 
<gettingalongwouldbenice@y...> wrote:
> 
> How do you get the holes in the right place?
> I tried using a manual dremel press.
> For something like a 40-pin dip header...the pads are tiny
> so you have to be right in the center.  Also the header won't
> fit if any of the tiny holes are the slightest bit off.
> 
> I stuck a dremel on a 3-axis stepper assembly.  Drills holes
> in accurate relative position, but never got around to writing
> the code to correct for board rotation in the fixture.
> 

Two ways.    

#1, drill one hole and then put a piece of perf board over it and use 
that as a guide.

#2, but a machined pin DIP socket and drill out the holes with your 
drill bit.

Then drill one hole in the PCB and then place the drilled socket over 
it and put in a pin or wire or drill and then use that as a way to 
align the rest of the holes.

Dave