These are 3x5 cards, the copper foil is 1 thousandth thick and the footprint of the copper foil (minus any cutouts is about 2.5x4.5 inches. The 3x5 cards are about 8 thousandths, the paper layer is about 4 thousandths. So distance between plates is 4, 8, and 16 thousandths. |
There will be a 2x2 inch area with 4 thousandth diameter holes centered every 8 thosandths or 250x250 holes or 62,500 holes. |
40x40 holes (approx) or 1600 holes in a 2x2" region |
not really cleanly done, but there are currently no shorts between layers (anymore) so I'm hopeful I'll be able to make a breeze. |