Enamel coated copper wire is a finely insulated copper wire.
So it's very very small you can get it at radio shack.
I'll try and get ASCII to work for me and get a design going.
Code:
Â* Â* Â*| Â* Â* Â* | Â* Â* Â* |
-----|||-----|||-----|||-----
Â* Â* Â* Â*| Â* Â*Â* | Â* Â* Â*|
Kinda like that, the straight lines being the 20 gauge copper wire, and the wrapped lines being the 32 gauge, then only having 1/16th inch spikes coming out of it.
*Crosses fingers and hopes the code will not fail*