[sdiy] Ground planes

[David G. Dixon]

> The solution is to make a clearence around the hole, make a
> normal hole and pad, and then draw either two or four wires to the
> surrounding ground-plane. That is a compromise to solve both problems.

Really, there's no need for more than one trace into the ground plane.
However, I use one and two sometimes, and either one is easy to solder (and
desolder).  Two traces on opposing sides of the pad are probably better,
particularly if you think you might need to desolder at some point.