I do have a pretty accurate (low-tech) method to transfer mounting hole locations:
- Attach normal standoffs to the board. In this particular case, the six mounting holes around the perimeter and the two (?) down the center.
- Place a bath towel on a hard surface.
- Place poster board on top of the towel.
- Press the board with the standoffs down onto the poster board.
- Label a reference standoff location, relative to some landmark on the board!!!
That should leave accurate impressions of each standoff in the poster board.
i'll try to get some posterboard tomorrow..... dont have any here at the moment