AW: pcb's

[R.G. Keen]

>             O lever to lower the drill in order to drill
>      ________\____
>
>      |  |      \ |
>      |  |____    | standard or something
>      |  |   |    |
>      |  |   |    |
>      ____   |    |
>       \     |    |
> drill /     |    |
>       \     |    |
>       /     |    |
>       \     |    |
>             |    |
>    _________|    |
>   /_______________\
>
>PCB should be on the 'table'.
>
>I know my explanation is real ugly and so on but I can do a hundred holes in
>say... five to ten minutes.
It gets even easier if you can find something like a 3-5 power
microscope with crosshairs. You can then make a setup like this:


     __
    |  |
    |  |
    |  |
    |  |
     __

      |
      |
____________
|----------|
     /     |
     \     |
     /     |
    | |    |
    | |    |
    | |    |
    | |-----
    |OO-----
   /| |
  /

Where you peer through the crosshairs microscope from the top, and 
work the drill lever to drill from the bottom, sliding the PCB around 
so you line up the crosshairs in the center of pads, having previously 
lined up the drill to hit the crosshairs exactly. Humans are -*VERY*-
good at lining up crosshairs in circles.

This is fast and efficient. It's just very hard to find a low power 
microscope with a crosshair reticle.

R.G.